-
Dr Brandon Sorbom (Commonwealth Fusion Systems)02/07/2025, 08:05
Commonwealth Fusion Systems (CFS) is building the SPARC tokamak in Devens, MA, USA, with first plasma planned in 2026. The initial objective of SPARC will be scientific demonstration of Q>1 (net fusion energy) in a tokamak, with experiments then shifting to the goal of exploring operating regimes for ARC, the first fusion power plant. SPARC utilizes a high field, compact, pulsed tokamak design...
Go to contribution page -
Junseong Kim (Facility for Rare Isotope Beams, Michigan State University)02/07/2025, 09:15
The High Rigidity Spectrometer (HRS) at the Facility for Rare Isotope Beams at Michigan State University is designed to study exotic neutron-rich isotopes at high beam energies. With a maximum magnetic rigidity of 8 Tm, the HRS is optimized for the rigidities at which rare-isotope beams are produced at FRIB. It consists of two main sections: the High-Transmission Beamline and the Spectrometer...
Go to contribution page -
Yi Zhu (CAS Ion(HANGZHOU) Medical Technology Co.,Ltd)02/07/2025, 09:15
A compact synchrotron based on superconducting magnets is under development in China. The compact synchrotron, with a circumference not exceeding 35 meters, is equipped with eight superconducting dipole magnets. It is designed to accelerate multiple types of heavy-ion beams from 7 MeV/u to 430 MeV/u. The Discrete-Cosine-Theta (DCT) coil structure is used to reduce the magnet size. The central...
Go to contribution page -
Ye Yang02/07/2025, 09:15
With an enhanced magnetic rigidity of 8Tm, the High Rigidity Spectrometer (HRS), is proposed to enhance the scientific reach at the Facility for Rare Isotope Beams (FRIB). The HRS consists of High Transmission Beam Line (HBTL) section and Spectrometer Section (SPS). Lawrence Berkeley National Laboratory (LBNL) is responsible for designing the two large aperture quadrupole magnets, QSA and QSB...
Go to contribution page -
Alessio D'Agliano02/07/2025, 09:15
It is known that Bi-2212 strands withstand higher external magnetic fields than LTS superconductors, allowing higher current density when allocated in the innermost layers of a high-field magnet. For this reason, the first stress-managed cosine-theta insert based on Bi-2212 Rutherford cable was designed at Fermilab within the U.S. MDP and is currently in the realization process. The HTS insert...
Go to contribution page -
305. Wed-Mo-Po.01-06: Development of the CCT superconducting magnets for the STCF interaction regionDr Shaoqing Wei (Institute of Plasma Physics (IPP), Chinese Academy of Sciences (CAS))02/07/2025, 09:15
In older to explore charm physics and tau physics in next decades, a third-generation circular electron-positron collider Super Tau-Charm Facility (STCF) with the energy range of 2-7 GeV is being developed and pre-studied in University of Science and Technology of China. As the last correction of the particles before the collision, the superconducting magnets in the interaction region (IR)...
Go to contribution page -
Francesco Mariani (INFN Milano and Sapienza University of Rome)02/07/2025, 09:15Poster
Within the framework of the International Muon Collider Collaboration (IMCC), researchers are involved in a feasibility study to develop high-temperature superconducting (HTS) magnets for the proposed 10 km collider ring, designed to reach a 10 TeV center-of-mass energy. Due to the short lifetime of muons of only 2.2 µs, the machine must minimize the acceleration time of the particles allowing...
Go to contribution page -
Riccardo Umberto Valente (Università degli Studi e INFN Milano (IT))02/07/2025, 09:15Poster
The Falcon Dipole is a project led by the Italian Institute of Nuclear Physics (INFN) which aims to fabricate a 12 T short model of a Nb3Sn cos-theta accelerator dipole as part of the High Field Magnet (HFM) R&D program at CERN. The status of the project is at the fabrication step of the first dummy coil in the industry and, in this paper, we present the results of the first campaign of...
Go to contribution page -
Luca Alfonso (INFN Genova)02/07/2025, 09:15Poster
Within the framework of the International Muon Collider Collaboration (IMCC), a feasibility study is underway to develop the proposed 10 km collider ring, aimed at achieving a center-of-mass energy of 10 TeV. The stringent requirements to maximize luminosity and shield decay products of muons - characterized by only 2.2 μs lifetime at rest - necessitate the design of compact, high-field, and...
Go to contribution page -
Henryk Piekarz02/07/2025, 09:15Poster
Based on the measured [1] very low power loss of the HTS-based magnet of 0.4 T field in 10 mm beam gap and ramp rate of 300 T/s we outline the HTS-based accelerator magnet conceptual design for 2.0 T field in the 30 mm (V) x 150 mm (H) beam gap for the muon acceleration with ramp rates up to 1000 T/s. The arrangements of the magnetic core and the 72 kA HTS power cable are presented. The...
Go to contribution page -
Luciano Elementi02/07/2025, 09:15Poster
Fermilab Magnet Systems is building three High-frequency AC-Dipole Magnets for the Mu2e experiment at Fermilab. These magnets are composed of three single-loop one-meter-long ferrite loaded segments. The excitation consists of a copper tube, which is also used as a means for its cooling with the inherited challenges of Voltage and Frequency uncoupling. These magnets are designed to operate...
Go to contribution page -
Simon Perraud02/07/2025, 09:15Poster
In the framework of the CERN-CEA collaboration and as part of the HFM program, CEA is developing the R2D2 magnet. This magnet is a key milestone in the development of Nb3Sn high field block coil magnets with grading for future circular colliders. R2D2 is a 1.6-m long dipole made of two Nb3Sn racetrack coils, each one made of two different conductors wounded together in order to explore the...
Go to contribution page -
Dr Tom Bedford (Tokamak Energy Ltd.)02/07/2025, 09:15
The large-scale design and manufacture of HTS magnets will require the production and use of thousands of kilometres of HTS tape, supplied by various manufacturers worldwide. A critical step in enabling the production of these magnets is establishing a robust quality control (QC) procedure that can be consistently applied to all received batches of HTS tape before their use in Tokamak Energy’s...
Go to contribution page -
Insung Park (Korea Electrotechnology Research Institute)02/07/2025, 09:15
High-temperature superconducting coated conductors (HTS CCs) are essential components in advanced technologies such as high-field magnet, fusion, power transmission, and medical imaging. However, non-uniform thickness along their length and width can severely affect the performance of HTS magnets. Despite the importance of maintaining thickness uniformity, no system currently exists to...
Go to contribution page -
Dr Yuri Kuzmin (Ioffe Physical Technical Institute of RAS)02/07/2025, 09:15
The effect of pinning landscape on critical current in percolative HTS composites is studied. The superconductor contains percolative superconducting cluster carrying a transport current, and artificial pinning centers created by normal-phase fractal clusters. Such a structure provides for effective pinning and thereby raises the critical current because the magnetic flux is locked in finite...
Go to contribution page -
Mr Ryota Ishii (Tokyo Metropolitian University)02/07/2025, 09:15
We have fabricated GdBa2Cu3O7-δ (Gd123) thin films doped Gd2CuO4 (Gd214) as artificial pins on LaAlO3 single crystal substrate by fluorine-free metal organic decomposition method and investigated their crystallinity and magnetic field angle dependence of JC-B properties. Recently, we have succeeded in fabricating Gd123 crystals introduced Gd214 as effective artificial pinning centers. TEM...
Go to contribution page -
Yutong Fu (Shanghai Jiao Tong University)02/07/2025, 09:15
High-temperature superconductor (HTS) cables have a broad prospect in power transmission applications due to their low loss and high current capacity. The stacked-tape cable is a type of HTS cables wound with parallel-stacked tapes, which shows enhanced thermal stability due to electrical and thermal contacts between tapes. During local quench, the transport current is redistributed among...
Go to contribution page -
Mr Zhiyou Chen (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences)02/07/2025, 09:15
Bi2Sr2CaCu2O8+x (Bi-2212) material, the only high-temperature superconducting material capable of being fabricated into isotropic round wires, holds significant potential for the future manufacturing of high-field magnets. In coil design and fabrication, the selection of coil radius is crucial, as an excessively small radius can substantially reduce the coil's current-carrying capacity. This...
Go to contribution page -
Hugo Sourice (Univ. Grenoble Alpes, CNRS, Grenoble INP, G2Elab, Institut Néel, F38000 Grenoble, France), Arnaud Badel (Univ. Grenoble Alpes, CNRS, Grenoble INP, G2Elab, Institut Néel, F38000 Grenoble, France)02/07/2025, 09:15
Characterization of superconducting Rare-Earth Barium Copper oxide (REBCO) tapes is a prerequisite to produce electrotechnical devices such as electromagnets, superconducting fault current limiters or superconducting magnetic energy storage.
Go to contribution page
The Grenoble applied superconductivity group is developing a high field large bore cryocooled magnet and knowing the critical current Ic everywhere in... -
Mr Wenge Chen (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences)02/07/2025, 09:15
The Cable-in-Conduit Conductor (CICC) is one of the core components in large-scale superconducting (SC) magnet systems, characterized by its multidisciplinary and technically complex nature. This paper investigated and developed a rectangular Bi2212 CICC to withstand high magnetic pressures in the CHMFL. Detailed analyses of its mechanical, stability, fabrication, and preliminary tests are...
Go to contribution page -
Marek Mosat (Lawrence Berkeley National Laboratory)02/07/2025, 09:15
Understanding quench dynamics in high-temperature superconducting (HTS) conductors is pivotal for their reliable integration into next-generation superconducting magnets. In this work, we present electrical and thermal simulations of Bi-2212 conductors during a current ramp to thermal runaway quench and compare them with test results. Bi-2212 conductors analyzed include a single round-strand...
Go to contribution page -
Shige Yang02/07/2025, 09:15
Large-scale superconducting magnets, characterized by their substantial diameter and high magnetic field strength, play a pivotal role in various high-field applications. To optimize the performance of these magnets, it is crucial to understand the mechanical behavior of the superconducting conductors used in their construction. This paper introduces a finite element model (FEM) developed to...
Go to contribution page -
Guangyu Jiang (SuperMag Technology (Shanghai) Ltd.)02/07/2025, 09:15
Due to the rapid development of compact nuclear fusion devices, the industrialization of second-generation high-temperature superconducting tapes (2G-HTS) have entered a new historical phase. SuperMag Technology (Shanghai) Ltd, a spin-off from Shanghai Jiao Tong University, has swiftly established at the end of 2022 as an manufacturer dedicated to cost-effective 2G-HTS tapes. After two years...
Go to contribution page -
Ms Yuhan Yang (Institute of Plasma Physics Chinese Academy Of Scieneces)02/07/2025, 09:15
Evaluation of AC loss is a key issue for high temperature superconducting (HTS) conductor design and optimization, which is critical for the efficient operation of large HTS devices. our research group previously presented a novel HTS conductor named Tenon-Mortise Modularized Conductor (TMMC), composed of multi-layer concentric round sub-conductors arranged in a fully-misaligned configuration....
Go to contribution page -
Dr Hiromasa Sasa (Kyushu university)02/07/2025, 09:15
Electric Vertical Takeoff and Landing (eVTOL) aircraft is attracted as a new means of transportation. The vertical takeoff consumes much amount of energy, leading the limitation of range and payload. To address this problem, we proposed a new method of takeoff by using a launch system for eVTOL with fixed wings. The eVTOL is accelerated by a linear motor mounted on the system. When the eVTOL...
Go to contribution page -
JuKyung Cha (Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Korea)02/07/2025, 09:15
Naval minesweeping is a crucial initial operation in naval warfare, ensuring safe passage for friendly forces by clearing sea lanes of mines deployed by adversaries. Current minesweeping methods utilize permanent magnets or copper cables to trigger magnetic mines. Generating stronger magnetic fields enables the clearance of deeply laid mines and the replication of larger vessels' signatures....
Go to contribution page -
Dr Tomonori Watanabe (Chubu Electric Power Co., Inc.)02/07/2025, 09:15
Aluminum die-casting requires an efficient melting technology to conserve energy, because aluminum die-casting process produces a large amount of aluminum casts and consumes huge quantity of energy. We have suggested the possibility of supplying molten aluminum to the die-cast process in a short time by DC induction heating using a superconducting magnet. In our DC induction heating equipment,...
Go to contribution page -
Tsuyoshi Yagai02/07/2025, 09:15
An increase in the ratio of Electric Vehicles (EV) to conventional petrol cars will be one of the most effective ways to reduce CO2 emissions throughout their life cycle, and make the goal of 2050 carbon neutrality more realistic. The boost converter, which is the most essential for photovoltaic plants to maximize its output power for providing electricity to the utility grid was chosen as a...
Go to contribution page -
Yang Hu (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)02/07/2025, 09:15
Electromagnetic forming (EMF) is a significant application direction of pulsed high magnetic fields. As a high-speed forming technique, EMF offers typical advantages associated with high forming rates, such as enhancing the material forming limit, suppressing wrinkling and springback. Additionally, the driving force in EMF is a non-contact force, eliminating the need for a force transmission...
Go to contribution page -
Wonju Jung (Seoul National University)02/07/2025, 09:15
Bi-2212 round wire offers advantages in low screening current due to its filament structure compared to REBCO tapes among high-temperature superconductors (HTS). Additionally, established methods for creating superconducting joints are well known for Bi-2212. These characteristics have led to extensive research into its use in nuclear magnetic resonance (NMR) magnets, which require high...
Go to contribution page -
Weilin Chen (Huazhong University of Science and Technology)02/07/2025, 09:15
Hot-dip galvanizing is a widely used method for protecting steel workpieces from corrosion, and controlling the coating thickness through wiping is crucial for ensuring both product quality and performance. Traditional gas wiping technology, though widely used, faces challenges, including air pollution, coating oxidation, uneven coating distribution, and difficulties in precise thickness...
Go to contribution page -
Prof. Seokbeom Kim (Okayama University)02/07/2025, 09:15
The no-insulation (NI) technique has been widely used in the development of high temperature superconducting (HTS) magnets. The compact 23 T NI-HTS magnet consists of pocket-sized double pancake coils was developed and reported. Therefore, it has been demonstrated that NI HTS coils are suitable not only for large-scale, high-field applications but also for small-scale, high-field applications....
Go to contribution page -
Zhan Tuo (Huazhong University of Science and Technology)02/07/2025, 09:15
Electromagnetic forming (EMF), a critical application of pulsed magnetic field technology, is extensively utilized in manufacturing lightweight automotive components and high-precision aerospace structures. The process involves rapidly discharging high-energy pulsed currents from a capacitor bank into a coil, generating a transient, intense magnetic field. When a conductive workpiece is placed...
Go to contribution page -
Mengxian Li02/07/2025, 09:15
Welding of dissimilar metals can significantly enhance the performance of metal components by utilizing the distinct physical and chemical properties of different materials, offering substantial potential in lightweight and multifunctional manufacturing. Magnetic Pulse Welding (MPW), a solid-state process, employs pulsed electromagnetic fields to accelerate dissimilar metals to supersonic...
Go to contribution page -
Dr Jeongmin Mun (Changwon national university)02/07/2025, 09:15G03: Losses in Conductors and Coils, Thermal AnalysisPoster
High-temperature superconducting (HTS) Maglev trains are gaining attention as a next-generation transportation technology due to their high efficiency and ultra-high-speed capabilities. However, losses occurring during operation significantly impact system stability and the maintenance of the target magnetic field. In particular, in PCS (Persistent Current Switch)-based HTS Maglev trains,...
Go to contribution page -
Goki Kawasaki (Kyushu University)02/07/2025, 09:15
Fully superconducting synchronous motors have great potential to achieve a high-power density (kW/kg), which is very attractive technology for future electric propulsion systems for aircraft applications. This system is expected to be operated with low voltage (several kV) and large current (several hundred A or more). Hence, the armature coil is required to have a large current capacity. In...
Go to contribution page -
Mr Xin Chen (Institute of Electrical Engineering, Chinese Academy of Sciences)02/07/2025, 09:15
High-temperature superconducting (HTS) synchronous condensers have demonstrated exceptional potential in enhancing grid stability and providing rotational inertia, particularly in power systems with a high proportion of renewable energy. By incorporating HTS magnets into rotor systems, these devices improve dynamic support performance, reactive power regulation, and grid inertia, addressing...
Go to contribution page -
Zeyu Min (China three gorges university)02/07/2025, 09:15
The regular partitioned stator flux-switching permanent magnet (PS-FSPM) machine integrates both permanent magnets (PMs) and armature windings within a single stator, providing significant space utilization for both the inner and outer stators. However, the PMs on the inner stator limits torque enhancement to adjustments in the pole arc coefficient. To overcome this limitation, a PS-FSPM...
Go to contribution page -
Dr Jae-Kwang Lee (Korea Electronics Technology Institute)02/07/2025, 09:15
Permanent magnet motors use rare earth permanent magnets that are sintered light rare earth elements (Nd, etc.), heavy rare earth elements (Dy, Tb, etc.), and iron. Currently, since heavy rare earth element imports depend entirely on specific countries, high-performance permanent magnets that exclude heavy rare earth elements have been developed in order to stabilize the domestic supply chain....
Go to contribution page -
Mr Jong-Hyun Kim (Gachon University)02/07/2025, 09:15
The motor with magnetic bearings has a structure in which the shaft is magnetically levitated outside the rotor, which can reduce friction loss, but increases the size of the motor system. Since the size of the motor system increases, it is not appropriate because it goes against the industrial demand for weight reduction and miniaturization. In order to reduce the overall size of the motor...
Go to contribution page -
Mr Jong-Hyun Kim (Gachon University)02/07/2025, 09:15
In this paper, methods to reduce iron loss through same direction skew and halbach array by utilizing the shape freedom of 3D printing are proposed. Axial flux motors have a higher power density than radial flux motors and are advantageous in a multi-pole structure. However, in the case of an axial flux motor, it is difficult to manufacture through electrical steel sheet lamination for iron...
Go to contribution page -
Mingji Yin (China Three Gorges University)02/07/2025, 09:15
Magnetic gears have the advantages of overload protection, no lubrication, fixed transmission ratio, and have broad application prospects in the field of low-speed and high-torque transmission. They can be used for motors, hydro-wind power generation, space gravity-free transmission, etc. Magnetic gears not only have research value for electrical disciplines, but also open up new ideas in...
Go to contribution page -
478. Wed-Mo-Po.06-08: A New Rotor Permanent Magnet Flux-Switching Motor With V-shaped Magnetic PolesLongxiang Han (China Three Gorges University)02/07/2025, 09:15
The rotors of conventional rotor flux switching permanent magnet (R-FSPM) motor are all fractured and require non-magnetic materials for support to avoid the permanent magnetic field being closed in the rotor, which will reduce the mechanical robustness of the rotor. In order to overcome the above limitations, a V-shaped combination of magnetic poles rotor permanent magnet flux-switching...
Go to contribution page -
Sung Hyun Yoon02/07/2025, 09:15
With the rapid growth of the electric vehicle (EV) market, the demand for high-efficiency and high-power motors has steadily
Go to contribution page
increased. Consequently, the use of rare-earth materials such as neodymium (Nd) permanent magnets has also risen. However, the
monopolistic supply chain and price volatility of rare-earth elements limit their wide adoption. In this study, we propose a motor... -
Mr Yang Guo (The Ohio State University)02/07/2025, 09:15
A crucial aspect of electric aircraft propulsion is the development of higher power density motors and generators. One promising approach to achieving this is using cryogenic flow cooling, which reduces the weight and losses in conductors in motors. The resistivity of aluminum decreases significantly with lower temperatures, dropping by a factor of 10 from room temperature to 77.2 K (liquid...
Go to contribution page -
Yingjie Tong (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology)02/07/2025, 09:15
With the rapid development of superconducting technology, the application scenarios for high-temperature superconducting (HTS) cables continue to expand, leading to increasingly complex configurations for cable installation. The thermal characterization of CORC cables is essential to ensure the stable and safe operation, making it an inevitable part of the design process of CORC cables. Due to...
Go to contribution page -
Wenze Si (Huazhong University of Science and Technology)02/07/2025, 09:15
Liquid Hydrogen and Superconducting Magnetic Energy Storage (LIQHYSMES) system based on electric-hydrogen conversion and superconducting magnetic energy storage is one of the important development directions of composite energy storage technology. As an important electromagnetic energy storage unit of the system, the thermal stability of LIQHYSMES magnet is crucial for the safe operation of...
Go to contribution page -
96. Wed-Mo-Po.08-01: A theoretical study on the design of a compact fingerprint-shaped vector magnetJianglan Li (Wuhan National High Magnetic Field Center)02/07/2025, 09:15
Vector magnet technology is being developed at the Wuhan National High Magnetic Field Center (WHMFC). Vector magnets can generate magnetic fields at arbitrary angles to meet user-specific requirements, offering significant potential in fields such as topological states and electron spin manipulation. This paper presents a mathematical model for designing compact vector magnet coils. The model...
Go to contribution page -
Zili Zhang (Institute of Electrical Engineering, Chinese Academy of Sciences)02/07/2025, 09:15
In this work, we developed an entire damage detection procedure, including the four-probe method, 2D-Hall scan method, magneto-optic method, and nano-CT method. The procedure can help us find the exact damaged area with a special resolution of 0.5 m and non-destructively investigate the microstructure in three dimensions. Combined with destructive characterization methods such as SEM, we can...
Go to contribution page -
Krzysztof Piotr Kawa (AGH University of Krakow)02/07/2025, 09:15
The complex electromagnetic and structural response of pulsed septum electromagnets is currently being studied, aiming to reveal insights in the prediction of their life cycles. The fault prediction remains a key challenge, requiring efforts in modelling and onsite instrumentation. Recently, a high-fidelity numerical model was developed, which allowed us to deepen our understanding of the...
Go to contribution page -
Junsu Yun (POWERNIX Co., Ltd.)02/07/2025, 09:15
As HTS(high-temperature superconducting) cables emerge as a potential alternative to drive inno- vation in the power sector, we are building equipment that can produce various types of cables. In particular, as research on various types of conductors using REBCO based tape-type superconduc- tors becomes more active, we are manufacturing equipment that can produce cables with twisted and...
Go to contribution page -
Jaheum Koo (Department of Electrical and Computer Engineering, Seoul National University, 08826, Korea)02/07/2025, 09:15
As interest in and the need for advancements in high-field technology grow, the development of superconducting cables capable of stably carrying high currents in the range of tens to hundreds of kA has become increasingly important. Stacking REBCO tapes can meet the high current demands of those systems while maximizing space efficiency.
Go to contribution page
Within the temperature-dependent critical current... -
Dongwoo Lee (Department of Electrical and Computer Engineering, Seoul National University)02/07/2025, 09:15
The inter-strand contact resistance in REBCO-based superconducting cables is a key parameter influencing current redistribution, AC losses, and cable stability. In this study, we measured the inter-strand resistance of short vertically stacked tape (VST) samples at liquid nitrogen temperature (77 K). The effective contact resistivities between the stabilizer and the REBCO tapes were estimated...
Go to contribution page -
Dr Shailendra Singh Chouhan (United Kingdom Industrial Fusion Solutions Ltd.)02/07/2025, 09:15
High-temperature superconductors (HTS) are promising candidates for use in the high-field magnets required for compact fusion reactors, such as the Spherical Tokamak for Energy Production (STEP). United Kingdom Industrial Fusion Solutions (UKIFS), in collaboration with Seoul National University and PowerNix, is developing vertically stacked tape (VST) HTS cables using ReBa₂Cu₃O₇₋ₓ coated tapes...
Go to contribution page -
Xianfeng Xu (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences)02/07/2025, 09:15
In fusion applications, cables made from high-temperature superconducting tapes are required to transport high currents in strong magnetic fields. Cable-in-conduit conductors (CICC) using multiple high-temperature superconducting (HTS) strands, such as the HTS conductor, meet these demanding requirements. This study presents experiments on a double casing conductor (DCC), a round HTS strand...
Go to contribution page -
Dr Sangjun Oh (Korea institute of Fusion Energy)02/07/2025, 09:15
As compared with low-temperature superconducting (LTS) conductors where wires are typically fully transposed, simply stacked high-temperature superconducting (HTS) conductors may be argued as easier to be fabricated. However, brittleness of HTS tapes presents significant challenges for efficiently assembling them into HTS conductors. Once winding finished, it is preferable stacks are tightly...
Go to contribution page -
Wonseok Jang (Seoul National University)02/07/2025, 09:15
REBCO coated conductors have emerged as a promising option for high-field fusion magnet applications, thanks to their outstanding critical current performance. However, their high aspect ratio tape-like cross-section, anisotropic properties, and susceptibility to various transverse mechanical stresses require careful consideration in cable design, particularly to prevent issues like...
Go to contribution page -
Shuliang Ma (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences)02/07/2025, 09:15
During the acceptance phase of the China Fusion Engineering Testing Reactor (CFETR) Central Solenoid Model Coil (CSMC), Paschen testing was conducted to verify the reliability of the insulation structure. To locate insulation faults during magnet testing, this study developed an Insulation Condition Monitoring System (ICMS) based on visible light imaging technology. The ICMS software,...
Go to contribution page -
Mr Songzhen Yuan (Beijing Jiaotong University)02/07/2025, 09:15
Twisted stacked-tape cable in conduit conductor (TSTC-CICC) structure constitute a very promising technology due to their easy fabrication process, flexibility, and high current density. This paper introduces a 6-slot TSTC-CICC structure and a 20-meter-long cable is fabricated. To verify its performance, the cable was wound into a D-shaped coil and successfully tested at liquid nitrogen...
Go to contribution page -
Songzhen Yuan (Beijing Jiaotong Universal)02/07/2025, 09:15
Twisted stacked-tape cable in conduit conductor (TSTC-CICC) structure have garnered significant attention due to their excellent electromagnetic performance and manufacturing simplicity. However, in fusion engineering applications, these cables are subjected to substantial transverse compressive loads during operation, transportation, and assembly stages, which primarily lead to irreversible...
Go to contribution page -
Qi Zhang (Xi'an Jiaotong university)02/07/2025, 09:15
With the development of superconducting technology, high temperature superconducting (HTS) tapes can be mass-produced. With the advantages of high current density, zero resistance in superconducting state and high resistance in normal state, HTS tapes can be used to limit and interrupt fault current as a fuse. However, with the superconducting layer to load normal current, the critical current...
Go to contribution page -
Prof. Lei Chen02/07/2025, 09:15
This paper centers around the scheme design and performance analysis of flux-coupling-type superconducting fault current limiters (SFCL) for inhibiting the cascading fault of AC/DC hybrid power grids. Firstly, it introduces the background and significance of researching the flux-coupling-type SFCL in the context of AC/DC hybrid power grids. The complex power flow characteristics and potential...
Go to contribution page -
Jiahui Zhu02/07/2025, 09:15
The increasing demand for reliable power supply in modern grids has highlighted the need for effective fault current limiting solutions. Superconducting Fault Current Limiters (SFCLs) based on Conductor on Round Core (CORC) technology offer a promising approach to address this challenge, combining high performance with cost-effectiveness. This paper presents the design, development, and...
Go to contribution page -
Ms Su-Hyeon Kim (Soongsil University)02/07/2025, 09:15
With the growing integration of renewable energy sources such as photovoltaics, research on DC systems has been actively performed. DC systems offer superior compatibility with renewable energy sources and lower power transmission losses compared to AC systems. However, it faces critical challenges, such as rapid increase of fault currents directly after a fault occurs and the absence of...
Go to contribution page -
Sung-Hun Lim02/07/2025, 09:15
In modern power distribution systems, ensuring stability and reliability has become increasingly important due to the continuous rise in electricity demand. Overcurrent incidents can cause severe damage to electrical equipment and widespread power outages, making the implementation of effective fault current limiting solutions essential. The flux-coupled type superconducting fault current...
Go to contribution page -
Sung-Hun Lim02/07/2025, 09:15
In this paper, the DC superconducting fault current limiting circuit breaker (SFCL-CB) with Adjustable Current Limiting Reactor was suggested and its fault current limiting characteristics was analyzed. The proposed DC SFCL-CB consists of two mechanical switches (SW), a magnetically coupled CLR and two superconducting elements(SC). In case that DC fault current occurs, the first...
Go to contribution page -
Seung-Su Choi (Soongsil University)02/07/2025, 09:15
Induction motor starting often causes voltage fluctuations due to high inrush current, which can impact system stability and power quality. To address this, smart inverters with power control functions and superconducting fault current limiters (SFCLs) have emerged as promising solutions for reducing voltage instability. The power control of smart inverters ensures that the voltage at the...
Go to contribution page -
Dr Changqing Ye (Hohai University)02/07/2025, 09:15
In this paper, we present a 2-D numerical model based on a vector potential method and nonlinear E-J relationship to study the dynamic responses of multiple bulks of high-temperature superconductor(HTSC) levitated above different typical permanent magnetic guideway (PMG). Different from the existing related models and results of this subject, the coupling effects of different bulks are taken...
Go to contribution page -
Xueliang Wang02/07/2025, 09:15
In power transformers and reactors, HTS AC coils and their supporting structures are accidentally subjected to fault current impacts and the resulting electromagnetic forces. Although single fault current (usually lasts only ~ms) may not cause electrical or mechanical failure of the HTS winding, it is important whether the HTS winding’s strength against fault-current-impact forces degrades...
Go to contribution page -
Prof. Joachim Wosnitza (Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany)02/07/2025, 09:15
The Dresden High Magnetic Field Laboratory (HLD) is a pulsed-field user facility, which provides external and in-house researchers with the possibility to perform a broad range of experiments in pulsed magnetic fields [1]. Being a member of the European Magnetic Field Laboratory (EMFL), HLD offers access and supports more than 100 scientific projects annually. At the HLD, a diverse set of...
Go to contribution page -
Ziying Pan02/07/2025, 09:15
The flat-top pulsed magnetic field can meet the requirements of many cutting-edge basic scientific researches on higher magnetic field, longer duration, and higher stability. In this study, a magnet is developed to generate 60 T pulsed magnetic field with 100 ms flat-top. Compared to conventional pulsed magnets, it has a larger internal hole diameter of 38 mm. In the design, a power-magnet...
Go to contribution page -
Siyuan Chen02/07/2025, 09:15
Pulsed high-field magnets serve as a crucial tool for the frontiers of fundamental researches. With the development of internal reinforcing techniques, magnetic fields up to approximately 65 T can now be generated with a simple coil. However, as the target magnetic field increases, the use of multiple coils becomes necessary to manage internal stress. Magnetic systems exceeding 80 T typically...
Go to contribution page -
Dr Juntong Hu (School of Astronautics, Beihang University)02/07/2025, 09:15
Split pulsed magnets are widely employed in high temperature superconducting (HTS) motor armature winding as magnetizing coils to implement in-situ pulsed field magnetization (PFM) for HTS field pole magnets. We have designed and developed a split pulsed magnet, that balances a peak central magnetic field of nearly 7 T and a rise time of 24 ms, making it particularly suitable for PFM of HTS...
Go to contribution page -
Dr Zengwen Wang (Huazhong University Science and Technology)02/07/2025, 09:15
The flat-top pulsed magnet field (FTPMF) can achieve the fields above 40 T with long duration, which enables the development of the terahertz gyrotron of 1THz with the operation width longer than 1 ms. The performance of the gyrotron is significantly influenced by the stability of FTPMF. Using a small compensation coil built into the bore of the magnet is a practical method to achieve the...
Go to contribution page -
Luchen Wei (Huazhong University of Science and Technology)02/07/2025, 09:15
Quasi-force-free magnets, with their small volume and low inductance characteristics, are considered a promising option for the magnetic system in THz gyrotrons. However, the current quasi-force-free magnets suffer from complex structures that are difficult to fabricate. Moreover, due to the inherent instability of their structure, a dielectric with a sufficiently high Young's modulus needs to...
Go to contribution page -
Jasper Van Der Werf (CERN)02/07/2025, 09:15
The development of superconducting diodes has significant interest for their potential to revolutionize advanced magnetic systems such as magnetic systems powered by a flux-pump. A novel method for producing a passively controlled superconducting diode has been developed. The design is based on high-temperature-superconducting (HTS) conductor technology with the use of a ferro-magnetic yoke. A...
Go to contribution page -
Arnaud Badel (CNRS - Université Grenoble Alpes)02/07/2025, 09:15
A superconducting diode is a device whose critical current is different depending on the direction of the current. It can be obtained using REBCO tapes,in which rectified motion of flux quantum is observed [1]. In this study, we develop a concept of wireless HTS magnet charging utilizing such HTS REBCO diodes. This concept was first we introduced at the last Applied Superconductivity...
Go to contribution page -
Zhipeng Huang (University of Cambridge)02/07/2025, 09:15
No-insulated (NI) high-temperature superconducting (HTS) magnets exhibit several advantages over conventional insulated (INS) magnets. The inherent turn-to-turn resistance of NI magnets facilitates the dissipation of localized hotspots, significantly reducing the risk of quenching and improving thermal management. These characteristics make NI magnets especially attractive for high-field...
Go to contribution page -
371. Wed-Mo-Po.12-05: Development of Inductive Wireless Charging Systems for HTS Magnet ApplicationsMr Jiyoung Yoon (Korea Maritime and Ocean University)02/07/2025, 09:15
High-temperature superconductor (HTS) magnets have demonstrated significant potential for generating high magnetic fields and transporting DC current with minimal power loss, making them essential components in advanced applications such as NMR, MRI, and superconducting motors. Despite the advantages, the high joint resistance of HTS magnets has limited the adoption of persistent current mode...
Go to contribution page -
Rodney Badcock (Open Star Technologies)02/07/2025, 11:15Contributed Oral
OpenStar is advancing fusion energy generation through the development of a levitated dipole reactor, building on the Levitated Dipole Experiment (LDX) concept. This approach integrates high-temperature superconducting (HTS) magnets with an onboard superconducting power supply.
Having successfully demonstrated the feasibility of integrating HTS magnets into the levitated dipole concept,...
Go to contribution page -
Bernardo Bordini (CERN)02/07/2025, 11:15Contributed Oral
The Muon Collider (MC) embodies a groundbreaking concept in circular colliders for high-energy physics, offering a unique pathway to achieve unprecedented energy and luminosity of the colliding partons while significantly reducing environmental impact compared to conventional collider technologies. A critical aspect of its feasibility lies in the development of cutting-edge superconducting...
Go to contribution page -
Dr Yifei Zhang (SuperPower Inc.)02/07/2025, 11:15Contributed Oral
The increasing demand for REBCO wires from various magnet applications such as that for the HTS-based compact fusion, accelerators, transportation, medical and analytical systems is driving the increase in our production capacity and the further improvements in wire performance and qualities. In the last several years, SuperPower was focusing on advancing the wire manufacturing technologies....
Go to contribution page -
Lorenzo Giannini (EUROfusion)02/07/2025, 11:30Contributed Oral
The Volumetric Neutron Source (VNS) is a steady-state tokamak designed to bridge the technological gap between ITER and DEMO by enabling full-scale testing of tritium breeding blankets and other fusion reactor components under DEMO-relevant conditions. The VNS magnet system features an innovative magnetic cage architecture, where the superconducting poloidal field (PF) coils are positioned...
Go to contribution page -
Samuele Mariotto02/07/2025, 11:30Contributed Oral
The Muon Collider represents an exciting proposal for a post-LHC accelerator, capable of exploring higher-energy regions with greater power consumption efficiency compared to hadronic alternatives, while avoiding synchrotron radiation limitations inherent in electron colliders.
This contribution will focus on the magnets for the Muon Collider storage ring. These magnets pose an...
Go to contribution page -
Masanori Daibo (Fujikura Ltd.)02/07/2025, 11:30Contributed Oral
RE-based High Temperatures Superconductors (HTS) are expected to be applied in various fields due to their high in-field critical current (Ic) and mechanical properties.
Go to contribution page
Fujikura Ltd. has developed high-performance RE-based HTS using Ion Beam Assisted Deposition (IBAD) and Pulsed Laser Deposition (PLD) techniques, and has supplied to various customers for many years.
Fujikura mainly has two... -
Dr Alexander Petrov (UK Atomic Energy Authority)02/07/2025, 11:45Contributed Oral
The Spherical Tokamak for Energy Production (STEP) is the United Kingdom's next-generation publicly funded fusion power plant prototype, aiming to export 100 MW of electrical power to the grid. For all magnets, the basic requirements imposed by the plasma and the spatial constraints are provided, as well as the anticipated modes of operation where applicable. Then, the most up-to-date concept...
Go to contribution page -
Bernardo Bordini (CERN)02/07/2025, 11:45Contributed Oral
The Muon Collider (MC) is one of the options under study as the next step for high-energy physics beyond the Large Hadron Collider. The magnets for a MC, largely based on high-temperature superconductors (HTS), bear some of the most pressing technology challenges and will require intense development and demonstration in the next years. The “target decay and capture solenoid”, a high field...
Go to contribution page -
Hunju Lee (SuNAM Co., Ltd.)02/07/2025, 11:45Contributed Oral
SuNAM has long been at the forefront of coated conductor (CC) technology, leveraging its proprietary Reactive Co-evaporation-Deposition and Reaction (RCE-DR) process to meet diverse industry needs, particularly in grid applications. However, the emergence of compact fusion reactors has presented unprecedented challenges, demanding in-field critical current performance that surpasses the...
Go to contribution page -
PENG SONG02/07/2025, 12:00Contributed Oral
CTRFR-1 (Compact Tokamak-based Repetitive Fusion Reactor-1, R = 1 m, a = 0.56 m, A = R/a = 1.8, B0=3.2 T, Q=1) is the next-generation high-temperature superconducting (HTS) spherical tokamak (ST) designed by Shannxi Startorus Fusion Technology Co., Ltd., a commercial fusion enterprise from China. The spherical tokamak is an economical and fast-building option for a fusion reactor, which allows...
Go to contribution page -
Samuele Mariotto02/07/2025, 12:00Contributed Oral
Large particle accelerator facilities for medium-high proton and heavy ion beamlines extensively rely on normal conducting magnets which, while effective, suffer from significant energy losses due to resistive heating in their copper coils. One successful strategy for improving these facilities involves upgrading their existing infrastructure by replacing resistive magnets with magnesium...
Go to contribution page -
Dr Anis Smara (THEVA GmbH)02/07/2025, 12:00Contributed Oral
High-temperature superconducting (HTS) REBCO tapes are being developed for practical use in high-field applications such as medical imaging and nuclear fusion. These tapes achieve current densities exceeding 800 A/mm² at 20 K and 20 T, made possible by incorporating artificial pinning (AP) particles that enhance their magnetic field resilience and overall performance. Mechanical stability is...
Go to contribution page -
02/07/2025, 12:15Invited Oral (by invitation only)
-
Mr Joe Lamont (JLab)02/07/2025, 12:15Contributed Oral
The MOLLER experiment at the Thomas Jefferson National Accelerator Facility (JLab) aims to precisely measure the weak interaction between electrons. This experiment leverages the 12 GeV electron beam and will run for three years. A crucial component of MOLLER is a system of five uniquely shaped water-cooled toroidal magnets. These magnets, possessing seven-fold symmetry, are designed to focus...
Go to contribution page -
Takanobu Kiss02/07/2025, 12:15Contributed Oral
Establishment of stable and reproducible mass-production method for high performance REBCO coated conductors (CCs) is now crucial issue to realize practical applications of REBCO CCs in industrial scale for such application as compact fusion reactor. Critical current, Ic, of the wire is one of the most important material parameters in the CCs. The steepness of the current-voltage (I-V)...
Go to contribution page -
Dr Jiamin Zhu (Shanghai Superconductor Technology Co., Ltd.)02/07/2025, 12:30Contributed Oral
With the beneficial characteristics of high irreversible field, high superconducting transition temperature and high critical current density, REBCO material has reached the stage of mass commercial production. Meanwhile a large number of superconducting power transmission projects and superconducting magnets have been developed using REBCO tapes. Recently, due to the significant demand for...
Go to contribution page -
Paul Huslage (Max-Planck-Institute for Plasma Physics)02/07/2025, 14:30
The EPOS stellarator, a compact device for confining electron-positron plasmas, will leverage high-temperature superconductors (HTS) to generate a highly optimized toroidal magnetic field. To achieve this, we will employ non-planar, non-insulated coils made from rare-earth barium copper oxide (ReBCO) tapes, which enable a 2T magnetic field on axis and a plasma volume of approximately 10L. We...
Go to contribution page -
Pedro Gil (Max-Planck-Institute for Plasma Physics, Garching, Germany)02/07/2025, 14:30
The APEX (A Positron Electron eXperiment) collaboration is developing a “tabletopsized”
Go to contribution page
stellarator, EPOS (Electrons and Positrons in an Optimized Stellarator). In this
work, we present ReBCO non-planar, non-insulated (NI) coils designed to confine pairplasmas
within a quasi-axisymmetric magnetic field of 2.0 T on axis. The stellarator’s
small size enhances its utility by reaching higher... -
Brian Chen (Thea Energy, Inc.)02/07/2025, 14:30
The “Canis” 3x3 array of high-temperature superconductor (HTS) planar coils was designed, manufactured, and tested by Thea Energy, Inc to demonstrate the viability of its core technology to generate stellarator magnetic fields for “Eos”, the company’s first integrated fusion system. The Canis 3x3 magnet array demonstrated the ability to create complex magnetic field shapes with sufficiently...
Go to contribution page -
Egemen Kolemen (Princeton University, Princeton Plasma Physics Laboratory)02/07/2025, 14:30
Magnetic confinement fusion devices, such as tokamaks and stellarators, use coils to confine plasma in a toroidal shape. Tokamaks rely on D-shaped pancake coils but also require a toroidal current in the plasma to generate the desired magnetic fields. Stellarators, on the other hand, avoid the need for a plasma current by relying solely on external coils, which leads to complex 3D coil...
Go to contribution page -
Carl Weggel (M.A.G.I.C., LLC)02/07/2025, 14:30
S.M.A.R.T. promises to be the boldest design to generate aneutronic fusion energy, first as process heat, and then as electricity for the power grid. I propose to incorporate 27 novel features to enable the Toroidal-Field (TF) system--with its brittle ceramic HTS conductor--to survive the peak stresses--and strains--from the (J x B) Lorentz forces generated by a peak ambient field of more...
Go to contribution page -
Lucie Baudin (CERN)02/07/2025, 14:30
The SHiP experiment, located at CERN in the ECN3 North Area cavern, aims to detect feebly interacting particles, potentially shedding light on neutrino mass and dark matter. A key component of the detector is the Hidden Sector Spectrometer, potentially the first large-scale, energy-efficient experimental magnet using superconducting MgB₂ cables. This technology, initially developed for the...
Go to contribution page -
Shohta Takami (Osaka University)02/07/2025, 14:30
The Standard Model of particle physics is not a perfect theory. Many experiments seek to observe phenomena beyond the Standard Model to fix it.
Go to contribution page
COMET experiment (COherent Muon to Electron Transition) is planned to be conducted at J-PARC. COMET aims to find the neutrinoless transition of muon to electron, known as “µ-e conversion.” To find this process, the first stage of COMET, COMET... -
Mr Sandesh Gopinath (Thomas Jefferson National Accelerator Facility)02/07/2025, 14:30
The MARCO magnet is a 2T superconducting solenoid magnet central to the Electron Ion collider (EIC) detector at Brookhaven National Laboratory (BNL). The magnet utilizes a Rutherford cable in channel conductor with a nominal current of approximately 4 kA at 4.5 K. The cable and the copper stabilizer design was refined to aide fabrication of a 50 m long sample conductor. The characteristic of...
Go to contribution page -
Mr Brian Eng (JLab)02/07/2025, 14:30
The Thomas Jefferson National Accelerator Facility (JLab) has developed a unique spectrometer system to study the weak interaction between electrons. The "Measurement of Lepton-Lepton Electroweak Reaction" (MOLLER) experiment, utilizing JLab's recent 12 GeV electron beam upgrade, is scheduled to operate for three years. Central to the MOLLER experiment are five water-cooled toroidal magnets,...
Go to contribution page -
Penelope Matilde Quassolo (CERN)02/07/2025, 14:30
The High-Luminosity LHC (HL-LHC) project aims at upgrading the existing LHC machine to increase its integrated luminosity by a factor of ten. A key aspect of this upgrade are the inner triplet (or low-β) quadrupole magnets, the MQXF, which utilize Nb3Sn superconducting magnet technology and reach a conductor peak field of 11.3 T. The MQXFB version, manufactured at CERN, is characterized by a...
Go to contribution page -
Dr Algirdas Baskys (CERN)02/07/2025, 14:30
One of the goals of the High Field Magnet (HFM) Programme at CERN is to explore High-Temperature Superconducting (HTS) magnet technology for accelerator applications that go beyond the limits of low-temperature superconductors and offer a pathway for the development of more sustainable particle accelerators operating at temperatures above 1.9 or even 4.5 K. As a stepping stone to achieving...
Go to contribution page -
Samuele Mariotto02/07/2025, 14:30
Novel conceptual designs for next-generation high-energy particle detectors are currently under development by the international research community. As part of the Future Circular Collider (FCC) conceptual design study in the electron-positron collision configuration, the baseline detector proposals (CLD and IDEA project) have selected aluminum-stabilized NbTi Rutherford cables as the primary...
Go to contribution page -
Yuwei Zhou (Shanghai Jiaotong University)02/07/2025, 14:30Poster
The persistent current switch (PCS) is a key component for enabling persistent current mode operation in superconducting magnets. Based on our previous research, this study proposes a heater-triggered semi-PCS with an ultrahigh switching-off resistance, fabricated using laser cutting and suitable for REBCO tapes. After chemically etching tapes, a designated path was cut into the exposed...
Go to contribution page -
Mr Minkyu Sun (Korea University)02/07/2025, 14:30Poster
The solder layer in electronic systems has been the subject of a vast number of studies in the field of reliability assessment due to the weakness of this layer and the large difference between its mechanical characteristics and those of the rest of the system. Among these characteristics, the difference in the coefficient of thermal expansion drives the generation of thermal stress, which can...
Go to contribution page -
Gaël Berthet (Seoul national university)02/07/2025, 14:30Poster
Rare-Earth Barium Copper Oxide (REBCO)-based High-Temperature Superconductor (HTS) tapes are used for large-scale applications, which typically require spools longer than those currently produced. Therefore, several joints are often needed for a single project, emphasizing the importance of low-resistivity, mechanically strong, and repeatable joints. Currently, soldering is one of the most...
Go to contribution page -
Kenta Yajima (Meiji Univ.)02/07/2025, 14:30Poster
To achieve a controllable operating temperature for superconducting magnet devices, the development of cryocooler-cooled superconducting magnets has garnered significant attention. Typically, the excitation current of commercially available cryocooler-cooled superconducting magnets ranges from approximately 100 to 200 A. However, increasing the excitation current of superconducting magnets is...
Go to contribution page -
Uijong Bong (Hinetics, Inc.)02/07/2025, 14:30Poster
The concept of a rotating cryocooler for superconducting rotating machines eliminates the need for cryogenic liquids in the cooling loop, thereby simplifying and compacting the cooling system. This approach enables the development of extremely lightweight machines with high torque density. However, at high rotational speeds (e.g., >3000 rpm), operational conditions often limit the...
Go to contribution page -
Chris Kovacs (Scintillating Solutions LLC)02/07/2025, 14:30Poster
In the United States, a NASA University Leadership Initiative program with The Center for Cryogenic High-Efficiency Electrical Technologies for Aircraft (CHEETA) and a separate ARPA E Connecting Aviation By Lighter Electrical Systems (CABLES) program have been developing 2 kA-rated, medium voltage, and lightweight quick connectors for aerospace. These quick connectors will also permit a...
Go to contribution page -
Hyunsoo Park (Seoul National University)02/07/2025, 14:30Poster
The fabrication of high-temperature superconductor (HTS) magnets often involves manual soldering joints, which relies on operator skill and causes performance variations. To address these challenges, this study presents the design, fabrication, and experimental evaluation of a roller-shaped HTS coil joint apparatus for soldering rare-earth barium copper oxide (REBCO) tapes. The apparatus was...
Go to contribution page -
Sumit Chand (Research Scholar)02/07/2025, 14:30Poster
In this study, different types of joints (lap joint and bridge joint) using commercially available second-generation (2G) high-temperature superconductor (HTS) tapes from two manufacturers were prepared, and their I-V characteristics were studied at 77 K, liquid nitrogen temperature. Both types of joints were prepared by taking each sample of HTS tapes with effective overlapping lengths...
Go to contribution page -
Kei Shiohara02/07/2025, 14:30
REBa₂Cu₃Oy (REBCO, where RE is a rare-earth element) coated conductors (CCs) fabricated using the trifluoroacetate metal organic deposition (TFA–MOD) method are among the most promising candidates for superconducting applications due to their low cost and excellent performance. High critical current (Ic) under magnetic fields is crucial for applications such as generators, nuclear magnetic...
Go to contribution page -
Michio Sato02/07/2025, 14:30
REBa2Cu3Oy (REBCO, where RE is a rare-earth element) coated conductors (CCs) fabricated using the trifluoroacetate metal organic deposition (TFA–MOD) method are promising for various electric power applications, such as superconducting cables, motors, and generators. This is due to their low cost and high criticaenter code herel current (Ic) under...
Go to contribution page -
Seiya Tarumizu (Department of Electrical Engineering and Computer Science, Tokyo Metropolitan University)02/07/2025, 14:30
We have fabricated Gd123 thin films co-doped with several kinds of RE₂CuO₄ (RE214: RE = Gd, Nd, Sm, Eu) by the FF-MOD method and investigated their superconducting properties. We have already reported that the introduction of the superconductor RE214 (Tc = 18.5 K) as an artificial pinning center (APC) into RE123 thin films which improved the Jc-B properties for the first time...
Go to contribution page -
Mr Uijin Jeong (Korea Basic Science Institute)02/07/2025, 14:30
This study presents a method for addressing defects in 2G high-temperature superconducting tapes using the REBCO Repair Patch (RRP) and analyzes its effects on performance enhancement. The main focus of the research includes an analysis of defect cases in the tapes and an experimental evaluation of performance improvements after the installation of the patch on defective tapes. Experiments...
Go to contribution page -
Dr Yusuke Sogabe (Kyoto University)02/07/2025, 14:30
When considering the application of coated conductors to ac equipment such as motors and generators, it is necessary to reduce ac losses, especially hysteresis losses caused by external ac magnetic fields, by multifilamentation. In multifilament coated conductors, the finer the filament, the better, since the overall hysteresis loss is reduced inversely proportional to the filament width....
Go to contribution page -
Yan Xin (FSU)02/07/2025, 14:30
There have been increased interests in REBCO Coated Conductor (CC) in applications such as ultrahigh field user magnets as well as magnets for nuclear fusion and high energy physics. The CC tape has good tensile strength in longitudinal direction thanks to its high strength substrate Hastelloy. In ultrahigh field magnets, however, the CC tape could experience electromagnetic stress exceeds the...
Go to contribution page -
Jun Lu (National High Magnetic Field Laboratory, USA)02/07/2025, 14:30
REBCO coated conductor has great potential to be used in ultra-high field magnets [1]. In such magnets, it is crucial to manage the high mechanical stress on REBCO due to electromagnetic force. The commercial REBCO tapes is strong in the longitudinal direction but is prone to delamination by tensile stress in the thickness direction. It had been observed that transverse tension by...
Go to contribution page -
Xudong Wang (Institute of Plasma Physics, Chinese Academy of Sciences/University of Science and Technology of China)02/07/2025, 14:30
High-temperature superconductors (HTS) REBCO (Rare Earth Barium Copper Oxide) tapes are key candidates for applications in fusion reactors and high-energy particle accelerators due to their excellent critical current densities and high magnetic field tolerance. However, their performance in radiation-intensive environments, particularly under neutron irradiation, remains a crucial research...
Go to contribution page -
Prof. Tetsuro Sueyoshi (Kyushu Sangyo University)02/07/2025, 14:30
In-field critical current density Jc properties in high-Tc superconductors are significantly affected by the morphology of nano-sized crystalline defects acting as pinning centers (PCs): the optimization in the shape and spatial distribution of PCs is one of important issues on development of REBa2Cu3Oy (REBCO) coated conductors (CCs) for superconducting magnet applications and even on...
Go to contribution page -
Yutong Fu (Shanghai Jiao Tong University)02/07/2025, 14:30
The parallel-wound No-insulation (PWNI) high temperature superconducting (HTS) coil is a novel type of pancake-shaped no-insulation coil made by parallel-staked HTS tapes, which is a promising solution for high field magnets. Previous studies have analyzed the electromagnetic characteristics of a PWNI HTS coil during the ramping process through simulations. The current distribution of these...
Go to contribution page -
Dr MengLin Wang (Institute of High Energy Physics, CAS)02/07/2025, 14:30
In the context of accelerator and fusion magnet applications, high-temperature superconducting (HTS) coils must maintain stable performance over extended periods post-installation, during which they undergo multiple thermal and magnetic cycles. This study investigates the stability of REBCO MI/NI coils under repeated thermal cycling and periodic electromagnetic loading. The degradation of Ic...
Go to contribution page -
Qiyu Wang (上海交通大学)02/07/2025, 14:30
An improved non-destructive detection method for detecting the turn-to-turn resistivity(TTRD) of large non-insulated REBCO coils is proposed. In previous studies, a method based on ODE and GA algorithm is proposed but tested only in a circular experimental coil. This study improves the method by modifying the optimization algorithm and detecting process to raise robustness, and tests in a...
Go to contribution page -
Xngjian Zhao (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China)02/07/2025, 14:30
The transformer in the power supply is naturally sensitive to the external magnetic field, and its operating characteristics are easily changed under the influence of the strong external stray magnetic field, resulting in the change of the operating characteristics of the power supply and even failure. Therefore, the establishment of an accurate transformer model under the external magnetic...
Go to contribution page -
Dr Matt Landreman (University of Maryland)02/07/2025, 14:30
For designing high-field electromagnets, the Lorentz force on coils must be computed to ensure a support structure is feasible, and the inductance should be computed to evaluate the stored energy and dynamics. Also, the magnetic field and its variation inside the conductor is of interest for computing stress and strain, and due to superconducting quench limits. For these force, inductance,...
Go to contribution page -
Carl Weggel (M.A.G.I.C., LLC)02/07/2025, 14:30
Using MACSYMA—the superb computer calculus program developed at MIT in the 1970s, ‘80s, and ‘90s—I have derived, verified, and meticulously simplified the analytic formulas for all magnetic quantities generated by any system of coaxial, axisymmetric, rectangular-cross-section (RCS), uniform-current-density (UCD) coils. All formulas now have the same constant of integration—zero—verified by...
Go to contribution page -
Hanlin Zhu02/07/2025, 14:30
Compared to the commonly used H and T-A methods for superconducting simulations, the J model offers a computational speed improvement of one to two orders of magnitude. However, due to inherent limitations, the J model is currently unable to simulate superconducting electrical devices containing ferromagnetic materials, such as superconducting motors. In this work, the existing J model is...
Go to contribution page -
Prof. Qiuliang Wang (Institute of Electrical Engineering, Chinese Academy of Sciences)02/07/2025, 14:30
The finite element analysis method is a commonly used and accurate approach for calculating the stress in electromagnetic coils. However, for dry-wound coils with nonlinear contact behavior, especially those with many turns, these methods are often time-consuming and may have convergence issues. Therefore, this study proposes a semi-analytical stress analysis method specifically designed to...
Go to contribution page -
Erik Schnaubelt (CERN)02/07/2025, 14:30
The design and operation of superconducting accelerator magnets necessitate accurate knowledge of thermal conditions to ensure their stability and performance. During the operation of these magnets, quench events can lead to complex thermal transients. Their analysis is commonly supported by detailed simulations, for which the finite element (FE) method can be used. The FE method offers...
Go to contribution page -
Dr Siwei Chen (Princeton Plasma Physics Laboratory)02/07/2025, 14:30
High-temperature superconductors (HTS), particularly rare-earth barium copper oxide (REBCO), are critical for ultra-high-field magnets in next-generation accelerators and compact fusion reactors due to their superior performance under high magnetic fields. However, existing characterization techniques cannot continuously evaluate long HTS conductors under simultaneous low-temperature and...
Go to contribution page -
Lorenzo Balconi02/07/2025, 14:30G07: Conductor and Coil Measurement/Test Techniques and FacilitiesInvited Poster
REBCO tapes stand out as the most promising conductors for a large variety of applications yet being still far from being fully understood on both the theoretical and experimental sides.
Go to contribution page
For this purpose, within the PNRR-IRIS project currently at its final phase, a 10 T cryogen free dipole magnet demonstrator fully built with HTS has been designed and is being manufactured, namely ESMA... -
Stefano Sorti (University of Milan and INFN Milan, LASA laboratory)02/07/2025, 14:30
Advanced automation tools are promising wide-range solutions for the various problems still affecting High-Temperature Superconducting (HTS) magnets, including Non-Insulated (NI) ones. State-of-the-art techniques have the potential to enable online monitoring and control of these devices, significantly enhancing their operational robustness to the extent of entirely preventing quench events,...
Go to contribution page -
Nancy Zhou (OpenStar Technologies Ltd.)02/07/2025, 14:30
OpenStar Technologies Ltd. is advancing fusion research through the development of a levitated dipole reactor inspired by the Levitated Dipole Experiment (LDX). The reactor design includes two main magnet components: a suspended, doughnut-shaped high-temperature superconducting (HTS) magnet at the chamber's center, and a top magnet above the chamber to maintain stable magnetic levitation....
Go to contribution page -
Piyush Joshi02/07/2025, 14:30
The manufacturing of superconducting magnets for High Energy Physics (HEP) and Fusion Energy Sciences (FES) applications requires high-current conductors to generate stronger magnetic fields without increasing the inductance of the magnet. Increased inductance is undesirable due to the associated AC losses, which reduce the temperature margin; and the quench protection also becomes...
Go to contribution page -
Linqing Luo (Lawrence Berkeley National Laboratory)02/07/2025, 14:30
High-temperature superconductors (e.g., REBCO) are key to developing high-field magnets for next-generation high-energy circular colliders and compact fusion reactors. The U.S. Magnet Development Program, in collaboration with industry, is advancing REBCO magnet technology through multi-tape CORC® wires. Conventional sensors (strain gauges and voltage taps) are becoming insufficient to provide...
Go to contribution page -
Yannik Dieudonne02/07/2025, 14:30
Remountable joints for large scale superconducting magnets are of considerable interest, particularly for fusion, as they open the possibility of new advantageous maintenance regimes. Developing this low maturity technology to the point of deployment on full scale tokamak magnets requires a host of specialised hardware test campaigns that inform design choices and prove out components under...
Go to contribution page -
Dr Quanyue Liu (Institute of Electrical Engineering, Chinese Academy of Sciences)02/07/2025, 14:30
For advancing the development of fully superconducting tokamak magnets and accelerating the progress to the next step in fusion reactor DEMO design, a refined and integrated large-scale superconducting tokamak simulation platform is being developed in China. The aim is to optimize the design and performance of tokamak magnets, improve their efficiency and reliability, solve complex...
Go to contribution page -
Rod Bateman02/07/2025, 14:30
At Tokamak Energy (TE) we have been working on a range of technology blocks and magnet demonstrators to raise the Technical Readiness Level (TRL) of REBCO HTS based magnets for spherical tokamaks (ST). This is a broad programme addressing technologies including coil manufacturing, quench protection, modelling and simulation, HTS irradiation, and other aspects. This talk will demonstrate how...
Go to contribution page -
William Iliffe02/07/2025, 14:30
The economic viability of fusion power plants such as UK Industrial Fusion Solutions Spherical Tokamak for Energy Production (STEP) [1] is a function of their size, toroidal field (TF) strength and availability throughout their operating lifetime [2]. This optimisation has led STEP to adopt a compact design featuring TF cables comprising a stack of rare-earth barium copper oxide (REBCO) ...
Go to contribution page -
Alexandre Torre02/07/2025, 14:30
In 2024, a new EU-DEMO baseline was released which changed substantially the constraints on the magnets systems. In particular, the stored energy of the TF system is about half of the former baseline value, which is bound to impact the magnetic loads as well as the coils protection.
Go to contribution page
After summarizing the main changes in the design inputs, this paper will present the changes implemented in... -
Xufeng Liu02/07/2025, 14:30
The BEST (Burning Plasma Experimental Superconducting Tokamak) is a compact tokamak device under design. The parameters of the device include major radius is 3.6m, minor radius is 1.1m, plasma current is 7MA, and central field strength is 6.15T. The magnet system of the device consists of 12 central solenoid coils (6 high-temperature superconducting coils and 6 low-temperature superconducting...
Go to contribution page -
Mr Zhengxin Yin (Tsinghua University)02/07/2025, 14:30
The spherical tokamak (ST), characterized by its low aspect ratio and compact geometry, necessitates a toroidal filed (TF) coil design that typically adopts a sharper D-shape profile. This design is distinguished by its slender and tall configuration with a reduced radius of curvature, which can result in localized magnetic field and stress concentration on coils. Furthermore, the...
Go to contribution page -
Simonetta Turtu02/07/2025, 14:30
DTT (Divertor Tokamak Test) is a fusion reactor facility which is being built in the Research Centre of ENEA Frascati, to cope with the technological challenges related to the divertor system in DEMO. The magnetic system includes 18 toroidal field (TF), a central solenoid (CS) composed by 6 modules and 6 poloidal field (PF) coils. These last are solenoids based on Nb3Sn for the 2 more...
Go to contribution page -
Dr Luigi Muzzi02/07/2025, 14:30
The design of the Central Solenoid (CS) for the “Divertor Tokamak Test” (DTT) facility has evolved through different options, investigated with the aim to satisfy the demanding magnetic flux performance required by the DTT scientific program, while providing a robust solution from the manufacturing and operational point of view.
Go to contribution page
In the present paper we illustrate the current design choice,... -
Clement Lorin02/07/2025, 14:30
The "SupraFusion" program is a French initiative dedicated to advancing High-Temperature Superconductor (HTS) technology. HTS materials enable ultra-high magnetic fields (>20 T) at low temperatures (4 K - 20 K), potentially revolutionizing fields such as fusion energy, wind power, and medical imaging. The program's primary goal is to establish France as a leader in HTS research and innovation,...
Go to contribution page -
Claudia Navarro (Tufts University)02/07/2025, 14:30
Future fusion devices must leverage the advantages of high temperature superconductors. To meet this challenge, a novel Rutherford-type cable winding of superconducting (REBCO) tape stacks has been proposed. This cable, known as the Flat Round-Edge Former Tape Cable (FReTC) is comprised of several multi-tape subcables wrapped around a flat, round-edge former. As part of enabling the use of...
Go to contribution page -
Clement Nguyen Thanh Dao02/07/2025, 14:30
High temperature superconductors incarnates the future of magnet technologies. Their ability to transport higher current within higher magnetic field compared to LTS make them the perfect contender toward compact high field magnets for TOKAMAKS. This possibility would increase drastically their performances and therefore possibly clearing a path to clean and sustainable energy. Modern TOKAMAKS...
Go to contribution page -
Dr Shu Tao (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences)02/07/2025, 14:30
REBCO coated conductor, the second-generation high-temperature superconducting (HTS) material, is one of the most promising materials for application in future fusion reactor high-field magnets due to its high critical current density and excellent mechanical properties. The Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP) is conducting the research and development activities...
Go to contribution page -
Mr Suxin Wang (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, China)02/07/2025, 14:30
Bi-2223 high temperature superconducting (HTS) tape has shown high mechanical stability and current capacity, which could be a potential material of cable-in-conduit-conductor (CICC) design and manufacture for fusion magnets. During winding process of magnet coil, bending strain is induced which cause the current capacity degradation. Thus, the bending performance of CICC cable is needed to be...
Go to contribution page -
Dr Arend Nijhuis (University of Twente)02/07/2025, 14:30
High magnetic fields of up to 20 T in tokamak-type fusion devices, such as in Central Solenoids of European DEMO and the Chinese BEST fusion reactors, require High-Temperature Superconductors (HTS) and a promising candidate is ReBCO tape. The large Lorentz forces occurring under these operating conditions may locally generate very high values of mechanical stress, which can irreversibly...
Go to contribution page -
Ms Renjie Huang (Institute of Electrical Engineering, Chinese Academy of Sciences)02/07/2025, 14:30
In this paper, we develop a new thermal-hydraulic simulation module as part of the Tokamak magnet software under development. The module focuses on the coupling effect between thermo-hydraulics and electromagnetism to study the LTS/HTS cable-in-conduit-conductor (CICC) stability margin and quench characteristics. The algorithm of the program is based on the finite element method. We present...
Go to contribution page -
Sam Tippetts (UKAEA)02/07/2025, 14:30
The Spherical Tokamak for Energy Production (STEP) is a prototype fusion power plant, planned to be operational in the 2040s. The STEP concept depends for its continuous operation on a system of high-temperature superconducting (HTS) magnets. The Toroidal Field (TF) magnets are required to be re-mountable, allowing for the vertical maintenance strategy adopted by the STEP programme. Verified...
Go to contribution page -
Lorenzo Cavallucci02/07/2025, 14:30
The ITER Toroidal Field (TF) coils are manufactured in the double-pancake configuration with cable-in-conduit-conductors (CICC), each containing several hundreds of Nb3Sn strands. These strands are produced by eight different companies using either the bronze-route or the internal-tin manufacturing process. These differences in the manufacturing procedure result in different performances of...
Go to contribution page -
Mr Oriol Fernández Serracanta (University of Strathclyde)02/07/2025, 14:30
The transition from low-temperature superconductors (LTS) to high-temperature superconductors (HTS) has opened new possibilities for toroidal field coil design in fusion applications. These next-generation HTS coils represent a significant departure from traditional D-shaped LTS coils, introducing unique operational dynamics and challenges. A key innovation is the adoption of HTS stacks, where...
Go to contribution page -
Yuyang Wu (University of Cambridge)02/07/2025, 14:30
High-temperature superconductor (HTS) magnets are gaining attention for their vital position of compact, high-field tokamaks, helping speed up the path to fusion energy. In future commercial nuclear fusion plants, steady-state operations lasting several months will be required. One of the main challenges for steady-state operation is the instability of plasma confinement, which can be reduced...
Go to contribution page -
880. Wed-Af-Po.11-06: Thermal hydraulic simulation of Tcs test in the ITER Magnet Cold test facilityMr Junjun Li02/07/2025, 14:30
The Magnet Cold Test Bench (MCTB) will be assembled and commissioned in 2025 with existing ITER systems (Cold terminal Box, Cryogenic system,) and new components (cryostat, power supply, interconnection valve box). The objective is to test as many TF coils as possible in the MCTB without impacting the assembly schedule in the pit. ITER TF magnet system consist of 18 coils. The Current sharing...
Go to contribution page -
Thierry Schild (ITER)02/07/2025, 14:30
While the ITER assembly is progressing, a Magnet Cold Test Bench (MCTB) is also under preparation to test some of the ITER superconducting coils at 4 K up to nominal current before their installation in the pit. In this context calculations were performed to estimate the residual inductive voltages in the quench detection loops of the TF coils during the test scenarios. These residual...
Go to contribution page -
Robert S Granetz (MIT Plasma Science and Fusion Center)02/07/2025, 14:30
Superconducting coils utilizing VIPER-like HTS cable for tokamaks and
Go to contribution page
stellarators are being designed, built, and tested. In order to assess a coil's ability to operate at the desired current, and/or to evaluate
possible degradation of a coil's performance due to manufacturing
processes, it is necessary to calculate the expected critical current, Ic, of the coil. This is actually a... -
Vyacheslav Solovyov (Brookhaven Technology Group)02/07/2025, 14:30
Supplying high current to a superconducting magnet incurs significant conduction losses through current leads. Due to the limitations imposed by the Wiedemann-Franz Law, the minimum loss is independent of the lead material and is 45 W per 1,000 A of DC current.
Go to contribution page
Here we propose and demonstrate a synchronous rectifying DC current drive with no thermal linkage between room temperature and... -
Bradley Leuw02/07/2025, 14:30
OpenStar is building a levitating dipole reactor (LDR), following in the footsteps of LDX and RT-1. In our quest to achieve fusion we are building Junior; an assembly of non-insulated (NI) high temperature superconducting (HTS) pancake coils weighing 500 kg operating at 1.44 kA and a peak field of 5.6 T.
Go to contribution page
An enabling step for the LDR is developing an integrated power supply system which has... -
Min Zhang (University of Strathclyde)02/07/2025, 14:30
The aviation industry has committed to a long-term global goal of net-zero carbon emissions by 2050. Zero Emission Sustainable Transportation 1 (ZEST1), which was funded by UK's Aerospace Technology Institute and consorted by 10 partners led by Airbus, aims to accelerate technology breakthroughs to enable zero emission commercial aircraft by 2030. Within the consortium, the University of...
Go to contribution page -
Tianming Liu (University of Science and Technology of China)02/07/2025, 14:30
Converters composed of thyristor full bridges are commonly used to feed superconducting coils and test magnets. Since magnets mostly operate in the steady state, converters under symmetric firing generate significant reactive power. In this paper, a design of the 0°/-180°phase-shift converter is proposed with asymmetric firing to reduce fundamental reactive power, and the even harmonics...
Go to contribution page -
Dr Can Wang (Hefei Institutes of Physical Science, Chinese Academy of Sciences)02/07/2025, 14:30
The 42-MW highly stabilized power supply, developed by the High Magnetic Field Laboratory, Chinese Academy of Sciences (CHMFL), successfully energized a newly designed water-cooled resistive magnet, achieving a world-record magnetic field of 42.02 T in September 2024. This power supply system is composed of a newly developed 14-MW power supply in parallel with a pre-existing 28-MW unit. The...
Go to contribution page -
Tonghai Ding (Huazhong University of Science and Technology)02/07/2025, 14:30
The high voltage power supply system of the pulsed high magnetic field facility at Wuhan National High Magnetic Field Center (WHMFC) will be upgraded to 167 MJ capacitor banks with 73 modules for 27 magnet experimental stations in 5 years. The capacitor bank power supply system and all magnet experimental stations are located on the second and first floors of the same building (Pulsed...
Go to contribution page -
Can Jiang (Hubei University of Science and Technology)02/07/2025, 14:30
This paper presents the design of a high-voltage power supply based on insulated core transformer, specifically tailored for electron irradiation accelerators to meet the demands of irradiation processing applications. The segmented magnetic core structure, however, inevitably leads to leakage issues, complicating the design of this high-voltage power supply. To develop a high-performance...
Go to contribution page -
Yufan Yan (Lawrence Berkeley National Laboratory)02/07/2025, 16:30Contributed Oral
High-temperature superconducting REBCO coated conductors have strong potential for high-field magnet applications. Significant technology gaps, however, need to be filled before we can fully leverage the conductor capability for future accelerator magnets. The U.S. Magnet Development Program is collaborating with conductor vendors to address this need. We report on the fabrication and test of...
Go to contribution page -
Antonio Bianchi (INFN)02/07/2025, 16:30Contributed Oral
The no-insulation technique in high-temperature superconducting (HTS) coils has significantly advanced HTS magnet technology by introducing an innovative approach to protection. This technique allows current redistribution between adjacent turns, enabling self-protection of the coils. However, it also introduces charging delays. To reduce the charging delay while maintaining self-protection...
Go to contribution page -
Lorenzo Bortot (ESRF)02/07/2025, 16:30Contributed Oral
The European Synchrotron Radiation Facility (ESRF) is currently working on the development of a new synchrotron light source for its beamline BM18. The proposed source is a short wiggler composed by three pairs of magnetic poles, delivering a peak magnetic field of 1.58 tesla. A crucial requirement is the possibility of performing scans of the magnetic field intensity, while keeping the...
Go to contribution page -
Dr Vadim Kashikhin (Fermi National Accelerator Laboratory)02/07/2025, 16:45Contributed Oral
Rare-Earth Barium Copper Oxide (REBCO) coated conductors are an attractive option for application in high-field accelerator magnets due to their high critical field and the convenience of fabrication without heat treatment compared to some other superconductors.
Fermilab plays a vital role in superconducting accelerator magnet R&D under the framework of the U.S. Magnet Development Program....
Go to contribution page -
Kibum Choi02/07/2025, 16:45Contributed Oral
High temperature superconductor (HTS) coils are widely acknowledged to have greater stability margins than their low temperature superconductor (LTS) counterparts. In particular, no-insulation (NI) coils are often assumed to exhibit even greater stability owing to enhanced thermal conduction between turns and inherent current-bypass capabilities. However, we hypothesize that this assumption...
Go to contribution page -
Wonseok Jang (Seoul National University)02/07/2025, 16:45Contributed Oral
In 2022, a collaborative team led by Pohang Accelerator Laboratory, Seoul National University and Kangwon National University began the development of a 5 T metal-insulated high-temperature superconducting (HTS) wavelength shifter (WLS) magnet, aiming to enhance the brilliance of photons by 1,000 times at 100 keV in Pohang Light Source II. In 2023, we reported test results of the magnet in a...
Go to contribution page -
Dr Thibault Lécrevisse (Université Paris-Saclay, CEA, Département des Accélérateurs, de la Cryogénie et du Magnétisme, 91191, Gif-sur-Yvette, France.)02/07/2025, 17:00Contributed Oral
High Temperature Superconductors (HTS) offer significant potential for very high field dipole. We started the development of REBCO-insulated dipole magnetsin 2010 with EUCARD and EUCARD2 programs. CEA Paris-Saclay then chose to apply the Metal-as-Insulation (MI) REBCO winding, originally developed in the 32.5 T solenoid insert project NOUGAT, the design, fabrication and tests of HTS high field...
Go to contribution page -
02/07/2025, 17:00
-
Ryota Kinjo (OIT)02/07/2025, 17:00Contributed Oral
To achieve a short-period, high-field undulator using HTS tape, we propose novel winding methods specifically designed for this purpose. Given the minimum bending radius constraint of HTS tape, conventional horizontal winding has been considered unsuitable for short-period undulators, leading to a primary focus on vertical winding. However, to overcome this limitation, we introduce an...
Go to contribution page -
Diego Arbelaez02/07/2025, 17:15Contributed Oral
The US Magnet Development Program (USMDP) is pursuing hybrid dipole magnet testing with low temperature superconductor (LTS) outserts and high temperature superconductor (HTS) inserts, as an efficient way to characterize HTS magnets at higher fields and stress levels. In this work, we present the test and performance characterization of the first hybrid dipole test at the recently upgraded...
Go to contribution page -
Prof. Federico Scurti (The Pennsylvania State University)02/07/2025, 17:15Contributed Oral
No-insulation (NI) high-temperature superconducting (HTS) coils have been shown to have improved thermal stability properties and an improved winding pack density over traditionally wound HTS coils. These improved properties have led to new design proposals for a wide range of applications, include some of the magnets of a fusion magnet system. However, further research still needs to be...
Go to contribution page -
Ms Chan Liu (Zhangjiang Laboratory, Shanghai)02/07/2025, 17:15Contributed Oral
A 50-period bulk high-temperature superconducting (HTS) undulator, utilizing a staggered-array configuration of RE-Ba-Cu-O bulk superconductors and magnetized by a 7 T solenoid magnet, is currently under development at Zhangjiang Laboratory for Shanghai Soft X-ray Free Electron Laser (SXFEL) facility [1-2]. The device operates through multiple temperature control stages for the HTS insert,...
Go to contribution page -
Anjana Saravanan02/07/2025, 17:30Contributed Oral
The novel uni-layer concept for superconducting magnets introduces a new geometrical approach to form a magnetic field orthogonal to an aperture. The new design allows for independent single layers, eliminating the need for internal layer jumps and favoring the use of grading, while maintaining high efficiency in the use of conductor. The unique attributes of the uni-layer concept are...
Go to contribution page -
Yutong Fu (Shanghai Jiao Tong University)02/07/2025, 17:30Contributed Oral
Parallel-wound no-insulation (PWNI) high-temperature superconducting (HTS) coil is a kind of pancake-shaped coil wound with parallel-stacked tapes, which is a promising technique with reduced ramping delay and enhanced thermal stability compared to conventional no-insulation coils wound with single tape (single-wound no-insulation (SWNI) coil). The turn-to-turn current redistribution...
Go to contribution page -
Zhuangwei Chen (Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai)02/07/2025, 17:30Contributed Oral
High-temperature superconducting (HTS) materials have attracted significant interest for use in insertion devices due to their higher critical temperature, Tc and larger critical current density, Jc compared to low-temperature superconducting wires [1-3]. These properties enable the development of undulators with shorter period and larger on-axis magnetic field. Helical undulators, which...
Go to contribution page -
Dr Fernando Toral (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT))02/07/2025, 17:45Contributed Oral
Building on the initial magnetic design of DAISY, the 14 T common coil magnet demonstrator being developed at CIEMAT under the High Field Magnet (HFM) programme, this paper investigates the feasibility of hybrid designs combining Nb₃Sn and NbTi for high- and low-field regions, respectively. The primary goal is to minimise superconductor usage while ensuring that the magnet meets the functional...
Go to contribution page -
Greg Brittles (Tokamak Energy Ltd)02/07/2025, 17:45Contributed Oral
Fast-ramping REBCO HTS magnets are required for the central solenoid and poloidal field coils of spherical tokamaks. Beyond fusion, this class of magnets has broad relevance to a range of emerging applications including motors and generators, space propulsion, manufacturing and other sectors. These magnets cannot adopt no-insulation (NI), which offer the most compact route to high fields using...
Go to contribution page -
Dabin Wei (Shanghai Institute of Applied Physics, Chinese Academy of Sciences,)02/07/2025, 17:45Contributed Oral
A 12 mm-period, 0.6 m-long HTS undulator, employing staggered-array Gd-Ba-Cu-O (GdBCO) bulks and magnetized by a 7 T superconducting solenoid, is currently being fabricated at Zhangjiang Laboratory for deployment at the Shanghai Soft X-ray Free Electron Laser (SXFEL) facility [1-2]. Realizing an undulator field with an RMS phase error of only a few degrees requires approximately 100...
Go to contribution page -
Prof. Timing Qu (Tsinghua University)02/07/2025, 18:00Contributed Oral
A new testing facility employing a 15-T transverse field to evaluate the full-service-field characteristics of superconducting materials is now under development in China. A key objective is the development of a large bore, 15-T dipole magnet to provide the transverse magnetic field load. In this study, we designed and constructed a compact high-temperature superconducting (HTS) dipole magnet...
Go to contribution page -
Dr Jeseok Bang (Applied Superconductivity Center, National High Magnetic Field Laboratory)02/07/2025, 18:00
The 'Little Big Coil (LBC)' magnet test bed investigates key coated conductor characteristics in a high field and high stress environment by testing a REBCO coil in the bore of the NHMFL 31.1 T Bitter magnet. Indeed, LBC3 first demonstrated excessive screening current stress (SCS) resulting in wavy plastic conductor damage, while obtaining the record-high DC magnetic field of 45.5 T by...
Go to contribution page -
Dr Seungyong Hahn (Seoul National University)03/07/2025, 08:00
Nearly four decades have passed since the first discovery of high temperature superconductor (HTS). To date multiple HTS wires have been developed and some of them are now readily available in a commercial market. REBCO has been regarded as one of the most advanced HTS wire options with the benefit of large in-field current carrying capacity and strong substrate mechanical toughness. The...
Go to contribution page -
Dr Wenhao Li (Shanghai University)03/07/2025, 08:45
In practical high-temperature superconducting (HTS) applications, various harmonics are present, causing the transport current to become non-sinusoidal, which may pose new challenges for controlling AC losses. However, the transport AC loss characteristics of REBCO coated conductor (CC) with magnetic substrates under non-sinusoidal currents are still unclear. In this study, we performed a...
Go to contribution page -
Dr Linjie Zhou (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)03/07/2025, 08:45
AC losses significantly impact the design and operation of superconducting power devices, making their fast and accurate calculation essential. However, calculating AC losses in high-temperature superconducting coils often requires substantial computational resources. This paper proposes an artificial neural network (ANN) model with a Transformer architecture to calculate AC losses in...
Go to contribution page -
Earle Burkhardt (Oak Ridge National Laboratory)03/07/2025, 08:45
The magnet system for the Material Plasma Exposure eXperiment (MPEX) provides the necessary field profile to enable rf source and heating along the length in order to meet the desired key performance parameters (KPPs) at the target area. In addition to the magnet system, MPEX has other systems (vacuum, diagnostics, rf source and heating) that operate in close proximity and require shielding...
Go to contribution page -
Rebecca Riccioli03/07/2025, 08:45
Many experimental and theoretical research studies have been conducted in recent years at the Paul Scherrer Institute (PSI, Switzerland) on the treatment of cancer with proton therapy. The PSI approach is based on fast volumetric rescanning, a technique in which the energy of the beam changes quickly. The development of a suited electromagnetic model to study superconducting magnets for proton...
Go to contribution page -
Dr Miyeon Yoon (Tech University of Korea)03/07/2025, 08:45
A non-contact method for estimating critical current is proposed, which can be applied to both single superconducting wires and various types of cables with multiple superconducting wires. The authors have previously proposed a method for measuring magnetization loss of a superconducting wire as a means of non-contact estimation of the critical current of a single superconducting wire. Since...
Go to contribution page -
Steve Krave03/07/2025, 08:45
During the testing of the Stress Managed Cosine-Theta magnet SMCT-01, magnet quenches were observed following large voltage spikes in the half coil voltage taps which preceded normal quench initiation. Following some recent work at CERN measuring power current convertor transients in relation to flux jumps, an additional differential current probe was added to the magnet instrumentation....
Go to contribution page -
Lorenzo Mauro (ASG Superconductors)03/07/2025, 08:45
The MgB₂ wire manufacturing process at ASG Superconductors has reached an advanced level of maturity, ensuring high reproducibility and homogeneity in long-length superconducting wires and tapes. These wires are available in various sizes and configurations, with single-unit lengths extending up to 6–7 km. The wires exhibit excellent mechanical properties, tailored through the careful...
Go to contribution page -
Mr Luke Von Freeden (CERN)03/07/2025, 08:45A02: Resistive Accelerator MagnetsPoster
This paper presents the design of the FCC-ee booster dipole magnets. The booster dipoles are low-field iron-dominated cycled H-type magnets. They consist of an 11 meter long laminated steel yoke with anodized aluminum busbars instead of coils. The magnet is designed to mitigate parasitic effects, namely the Earth’s magnetic field and yoke hysteresis, that become significant at the 6.5 mT field...
Go to contribution page -
Dr Alessandro Vannozzi03/07/2025, 08:45
The Frascati National Laboratories (LNF) of National Institute for Nuclear Physics (INFN) have extensive experience in the design and measurement of electromagnets and permanent magnets for particle accelerators. A large amount of design and tests, including detailed magnetic characterization for various projects such as the DAΦNE collider [1] , CNAO [2], and other experiments have been...
Go to contribution page -
Carla Martins Jardim (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (ES))03/07/2025, 08:45
For the development at CERN (European Center for Nuclear Research) of the post-LHC accelerator infrastructures, HL-LHC (High Luminosity Large Hadron Collider) and FCC (Future Circular Collider), a new generation of magnets with extreme mechanical constraints, capable of generating high-quality magnetic fields of the order of 14T (operational) and energy efficient will be required. These...
Go to contribution page -
Pavlina Trubacova (CERN)03/07/2025, 08:45
In high-energy particle accelerators, kicker magnets are essential for injecting and extracting particle beams using fast-pulsed magnetic fields. A key challenge in their design is minimizing beam coupling impedance to maintain beam stability and reduce induced power losses while preserving the fast rise and fall times of the magnetic pulse.
Go to contribution page
This paper presents innovative principles and... -
Dabin Wei (Shanghai Institute of Applied Physics, Chinese Academy of Sciences,)03/07/2025, 08:45
The injector operating within the 3–15 MeV energy range is considered to hold significant potential for various practical applications, with broad prospects demonstrated in scientific experiments and industrial applications. For such typical injectors, the precise measurement of beam quality through a beam diagnosis system is considered crucial. The development of a universal beam diagnosis...
Go to contribution page -
Yufan Yan (Lawrence Berkeley National Laboratory)03/07/2025, 08:45
In this work, we present the design of a combined-function Canted-Cosine-Theta (CCT) accelerator magnet with an elliptic aperture and report progress on the fabrication of a NbTi demonstrator magnet. This unique bore shape is desired for fixed-field accelerators to accommodate horizontal orbit offset between beams of different energy. We first share the magnetic and mechanical design of a...
Go to contribution page -
Tomohiro Takayanagi03/07/2025, 08:45
Compared to DC magnets with constant current, pulsed magnets with instantaneous current flow are superior in terms of energy conservation because the time required to generate Joule heat due to the electrical resistance of the coil is limited. However, the magnetic field distribution that affects beam orbit control cannot be known accurately until the pulse power supply is excited, because the...
Go to contribution page -
Luke Von Freeden (CERN)03/07/2025, 08:45
A new electron cooler for the antiproton decelerator (AD) ring at CERN is under construction and will be installed in the next long shutdown (2026-2028) to replace the existing 40-year-old device. This paper presents the design of the new electron cooler magnet system, justifies key design choices, and details the performance. Compared to the existing electron cooler magnet system, the new...
Go to contribution page -
Dr Junjie Du (East China University of Technology)03/07/2025, 08:45
As a recently developed type of dipole field magnets, the tilted solenoids technology has great potential in various fields such as proton therapy, particle accelerators, and high-field applications. High-temperature superconducting materials can further enhance the magnetic field strength, reduce the bending radius, and lower the device cost. This research is based on differential geometry...
Go to contribution page -
Lianrong Xu (Lawrence Berkeley National Laboratory)03/07/2025, 08:45
The current 28 GHz Electron Cyclotron Resonance Ion Sources (ECRISs), constructed with Nb-Ti wires and conventional sextupole-in-solenoid or unconventional solenoid-in-sextupole structure, have utilized about 90% of the critical limits of the Nb-Ti wires to achieve maximum operating frequencies of up to 28 GHz. To produce an ECRIS capable of operating at fields required for frequencies of...
Go to contribution page -
Mr Hongzhuo Zeng (Institute of Electrical Engineering, Chinese Academy of Sciences)03/07/2025, 08:45
For non-insulated (NI) HTS coils wound with thin REBCO tapes, on the one hand, due to increasing current density, the coils can generate higher magnetic field; on the other hand, the compactness and the mechanical stability of the coils can be improved for the reason of higher proportion of Hastelloy. However, up to now, there is a lack of experimental research data on the electro-thermal...
Go to contribution page -
Bonghyun Cho (Pusan National University)03/07/2025, 08:45
This paper presents both numerical and experimental investigations aimed at achieving accurate measurements of critical current in no-insulation (NI) high-temperature superconducting (HTS) coils. Leakage currents can flow through the turn-to-turn contact resistance in NI HTS coils. Additionally, screening current-induced voltages become dominant factors during the initial charging process....
Go to contribution page -
Bonghyun Cho (Pusan National University)03/07/2025, 08:45
No-insulation (NI) high-temperature superconducting (HTS) coils have gained attention for their high overall current density, thermal stability, and mechanical integrity. However, the time constant and the characteristic resistance in NI HTS coils, which are dominantly governed by radial turn-to-turn contact resistances, still require further investigation to examine coil specifications....
Go to contribution page -
Mr Kevin Tang (Thea Energy, Inc.)03/07/2025, 08:45
To generate the twisted magnetic fields necessary for fusion plasma confinement, stellarators have historically required complex and precise modular coils, which are difficult to manufacture and maintain. In mitigating this challenge, Thea Energy, Inc. is actively developing “Eos”, a planar coil stellarator that can shape the needed magnetic fields using arrays of hundreds of smaller,...
Go to contribution page -
Dr Andrea Musso (RSE S.p.A., Milan)03/07/2025, 08:45
In the development of high-temperature superconductor (HTS) pancake coils, the no-insulation (NI) is a well-known approach that enables self-protection by allowing radial current redistribution during thermal events. This method, while advantageous for mitigating damage during quench, presents significant challenges due to the low contact resistance, which causes a substantial reduction in the...
Go to contribution page -
Fangliang Dong03/07/2025, 08:45
In this paper, we present investigation of the impact of the surface shunting on the current and thermal distributions within no-insulation (including metal-insulation) REBCO coils, particularly in relation to quench and overcharge events. The metallic surface shunt serves as an additional current bypass outside of the winding, complementing the turn-turn bypass present inside metal-insulated...
Go to contribution page -
Erik Schnaubelt (CERN)03/07/2025, 08:45
High-temperature superconductor (HTS) coated conductors (CC) can be wound into no-insulation (NI) pancake coils, i.e., coils without electrical insulation in-between the turns. Along the CC length, the critical current has an inherent variation due to its manufacturing process. This variation causes non-uniform heat generation when the coil is operated at a high fraction of the critical...
Go to contribution page -
Mr Jeongwoo Seo (Korea Maritime and Ocean University)03/07/2025, 08:45
The no-insulation (NI) winding method is widely known for its ability to improve the stability of high-temperature superconductor (HTS) coils by bypassing the hot spot during a local quench. However, one major drawback of this method is the occurrence of charge and discharge delays due to current leakage between winding turns. To address this limitation, we recently proposed an impregnation...
Go to contribution page -
Mr Gongxuan Chen (Institute of Electrical Engineering, Chinese Academy of Sciences)03/07/2025, 08:45
The contact resistance of non-insulation high-temperature superconducting (NI HTS) coils is an important parameter to characterize their thermal stability. While numerous discharging experiments have demonstrated that the contact resistance of NI HTS coils is not constant, the real-time evaluation of its transient behavior remains insufficiently explored. This paper proposes a novel inverse...
Go to contribution page -
Xueliang Wang03/07/2025, 08:45
It has been already revealed that for no-insulation (NI) HTS coils during transient charge and discharge, biased transport current concentrates on the coil terminals, which is closer to the power supply and is less affected by azimuthal current delay effect caused by turn-to-turn current. However, the 3D current density distribution, which considers the terminal effect, is still unclear. Based...
Go to contribution page -
Xueliang Wang03/07/2025, 08:45
Electromagnetic forces arose from short-circuit impact can cause severe injuries to transformer windings. To alleviate short-circuit force damages, this study proposes a three-phase resistive-type HTS fault current limiter (R-SFCL) design implemented in a power transformer. A field-circuit coupled model is established considering R-SFCL with three-phase non-inductive coils by coupled...
Go to contribution page -
Yuta Ebara (Sumitomo Heavy Industries, Ltd.)03/07/2025, 08:45Invited Poster
In the manufacture of Nb3Sn coils, the react-and-wind (R&W) method, which uses heat-treated wire to manufacture coils, has advantages, such as no need for heat treatment of the coil. In the R&W method, it is necessary to consider the degradation of the critical current due to Nb3Sn strain, including strain due to winding. Recently, we demonstrated the fabrication of R&W coils with a small...
Go to contribution page -
Yangyang Shi (Beijing Jiaotong University)03/07/2025, 08:45
The high temperature superconducting (HTS) CORC cable has the advantage of high flexibility, making it one of the best candidate cables for producing compact fusion magnets. The intense background magnetic field strength and high current in the fusion device will cause the CORC cable to be subjected to a huge axial tensile electromagnetic force. Excessive axial tensile load can cause...
Go to contribution page -
Mr Yang Guo (The Ohio State University)03/07/2025, 08:45
CORC® ReBCO cables show great potential as conductors for the next generation of high-performance cables in high-field accelerator magnets. However, due to the unavoidable mechanical stresses present in high-field magnet applications, it is important to investigate the deformation and damage these cables sustain under significant transverse compressive stresses. Our previous study demonstrated...
Go to contribution page -
Guanyu Xiao (ASIPP)03/07/2025, 08:45
To fulfill the requirement of the high field (＞15 T) and high current carrying capacity (＞40 kA) superconducting magnets for the next-generation fusion reactor, the Institute of Plasma Physics, Chinese Academy of Sciences, proposed two kinds of CICC design concepts, which are both manufactured from a sub-cable. The sub-cable is formed by winding REBCO tape around a stainless steel spiral tube....
Go to contribution page -
Zhaoran Wang03/07/2025, 08:45
This work provides an overview of the experimental and numerical simulation studies on the effects of cool down and external magnetic field-induced mechanical damage in epoxy-impregnated REBCO magnets. Firstly, a circumferential stress numerical model for an epoxy-impregnated REBCO no-insulation (NI) insert magnet was established. The simulation encompasses the cooling process, the influence...
Go to contribution page -
Zhihua Li (Shanghai Jiao Tong University)03/07/2025, 08:45
Complex stress distribution arises in high-temperature superconducting (HTS) coil based on REBCO coated conductors, which is affected by the applied winding tension, thermal stress during cooling down, and electromagnetic forces when energizing the coil. The material and structure of bobbin and overband also play an important role. If the stress exceeds a certain range, it can cause...
Go to contribution page -
Mr Dongwoo Lee (Department of Electrical and Computer Engineering, Seoul National University)03/07/2025, 08:45Invited Poster
In tokamaks, a strong and stable toroidal magnetic field is essential for plasma confinement. Among the available materials for toroidal field coil, REBCO is a promising candidate due to its excellent stability margin and high critical magnetic field. However, the design and analysis of toroidal field coils, which consist of multiple components such as REBCO-coated conductors, solder,...
Go to contribution page -
Chaemin Im03/07/2025, 08:45
Structural issues in high-temperature superconducting (HTS) magnets under high magnetic fields have garnered significant attention in recent years. While much of the research has focused on the electromagnetic forces induced by operational and screening currents during magnet operation, the mechanical behavior of HTS magnets during fabrication and cooling stages remains underexplored.
Go to contribution page
This... -
Hyun Sung Noh (Korea University)03/07/2025, 08:45
When designing magnets with strong magnetic fields, it is imperative to consider the mechanical stress induced by the Lorentz force. However, conventional stress-strain calculation methodologies, or force balance equations that utilize the BJR formula, often neglect the frictional force between superconductor tapes. This motivated our previous study on the relationship between the frictional...
Go to contribution page -
Jinyang Qian (Shanghai Jiao Tong University)03/07/2025, 08:45
The REBCO coated conductor (CC) tapes used in high-field magnets are subjected to a variety of mechanical and thermal loads, including stress during the manufacturing process, Lorentz forces during operation, as well as repeated electromagnetic and thermal cycles. It is crucial for the magnet designers to know the fatigue properties of CC tapes to ascertain their service life under operating...
Go to contribution page -
Mr Bohyun Jang (Changwon national university)03/07/2025, 08:45
High-temperature superconducting (HTS) magnets, fabricated by winding HTS tapes, are widely utilized in various advanced applications. During operation, these HTS magnets and their wound HTS tapes are subjected to compressive loads caused by external factors such as winding tension, thermal contraction during cooling, and electromagnetic forces, leading to mechanical deformation. Previously,...
Go to contribution page -
Shutaro Machiya (Daido university)03/07/2025, 08:45
Reinforced BSCCO wire has been considered to have a small margin of strength on the compression side because the filaments has been introduced to compressive strain. However, due to the presence of a sheath and the difficulty of observation, there were no examples of actual fracture behavior in compression. In this paper, we report on in situ microscopic observations of BSCCO filaments exposed...
Go to contribution page -
Rongmei Niu03/07/2025, 08:45
Age-hardened Cu-Zr sheets are used in resistive magnetic field application. In this work, we studied the fatigue properties of Cu-Zr and Cu sheets. Three categories of Cu-Zr sheets with different strength were investigated and compared. Our investigation showed that their fatigue life was related to their ultimate tensile strength (UTS). Materials with higher UTS demonstrated longer fatigue...
Go to contribution page -
Damien Minenna (CEA, IRFU)03/07/2025, 08:45
Designing superconducting magnets presents a challenge due to their inherently multi-faceted nature. It requires a deep understanding of diverse physics domains and the integration of specialized tools. To streamline the design process, CEA-IRFU started developing ALESIA, a novel optimization and data management platform.
Our platform leverages advanced algorithms, including nonlinear...
Go to contribution page -
Siena Hurwitz03/07/2025, 08:45
The Lorentz forces on electromagnetic coils play an important limiting role in the design of practical magnetic confinement fusion reactors and other high-field devices as designs must demonstrate that the forces are within prescribed limits. Unfortunately, the Lorentz force is time-consuming to numerically evaluate due to a source point singularity in the calculation of the self-force and, as...
Go to contribution page -
Dr Kyungsik Seo (Sungkyunkwan University)03/07/2025, 08:45
Superconducting magnets have been extensively studied for their applications in advanced magnetic technologies, taking advantage of their capability to generate high current densities and strong magnetic fields. In the design of superconducting magnets for high field density, a key consideration is the characteristic critical current density, beyond which superconductivity is lost. A previous...
Go to contribution page -
Ms Eunchae Jung (Sungkyunkwan University)03/07/2025, 08:45
The demand for magnetic resonance imaging (MRI) devices with low cost and reasonable weight continues to increase as applications keep requiring diverse fields of view (FOV). In response to this demand, research on open MRI employing permanent magnets has been actively pursued.
Go to contribution page
The use of permanent magnets eliminates the need for power consumption and cooling systems, making the setup... -
Sriharsha Venuturumilli (Openstar Technologies Ltd)03/07/2025, 08:45
Inspired by the Levitated Dipole Experiment (LDX), Openstar proposed replacing the LTS core magnet with an HTS magnet powered by flux pumps. Embedded flux pumps enable the HTS magnet to maintain a constant DC field similar to LTS magnets with persistent joints. However, due to the limited zero-field region within the magnet, optimizing the flux pump design is critical to achieving maximum...
Go to contribution page -
Michael Sumption03/07/2025, 08:45
This work analyzed current sharing and quench evolution in REBCO based superconducting cables intended for use in the High Energy Physics (HEP) accelerator dipole magnets. Current sharing was explored for simple tape stack cables using FEM modelling. Summaries are given for finite element work performed on various number of stacked tape cables, in 3D configurations while varying interstrand...
Go to contribution page -
Maira Khan (Fermi National Accelerator Laboratory)03/07/2025, 08:45
Detecting quenches in superconducting (SC) magnets during training is a challenging process that involves capturing physical events that occur at different frequencies and appear as various signal features. These events may be correlated across instrumentation type, thermal cycle, and ramp. These events together build a more complete picture of continuous processes occurring in the magnet,...
Go to contribution page -
Dr Qing Yan (Institute of Plasma Physics Chinese Academy of Scieneces)03/07/2025, 08:45Invited Poster
High-temperature superconducting (HTS) magnets are designated for use as Central Solenoid (CS) magnets in China’s next-generation fusion device. However, their temperature rises rapidly when quenching happens, which may lead to performance degradation. So the voltage detection threshold of HTS is much lower than LTS magnets. The currently employed Co-wound Wire (CWW) + Inductive Noise Realtime...
Go to contribution page -
Dr Donghui Jiang (The High Magnetic Field Laboratory, Chinese Academy of Sciences), Shige Yang03/07/2025, 08:45
Superconducting conductors and coils are critical components in high-field applications, requiring rigorous performance evaluation to ensure reliability and efficiency. This paper introduces the design and construction of a superconducting conductor testing apparatus, developed to assess the performance of superconducting conductors and coils under high magnetic fields. The apparatus consists...
Go to contribution page -
Matthew Dickerson (Thea Energy, Inc)03/07/2025, 08:45
Thea Energy has created the “Canis” 3x3 array of high-temperature superconducting (HTS) planar coil magnets as a prototype for the “Eos” stellarator. This poster covers instrumentation of the Canis 3x3 magnet array highlighting the magnetic field control and field validation support systems. Field sensors mounted on each coil combined with individual magnet power supplies allowed the array...
Go to contribution page -
Myunghwan Ku (SuNAM Co., Ltd)03/07/2025, 08:45
In superconducting applications such as NMR/MRI, SMES, and fusion reactor systems, the critical current (Ic) of the wire is an essential component in determining device performance. This critical current depends on the applied magnetic field (B) and temperature (T), and particularly exhibits magnetic anisotropy in tape-shaped HTS. SuNAM, a manufacturer of HTS wire, operates a 4 Tesla Ic(B, T)...
Go to contribution page -
Mr Noah Gavin (National High Magnetic Field Laboratory, USA)03/07/2025, 08:45
The accurate measurement of thickness profile across the width of REBCO conductors is critical to design and fabrication of REBCO magnet windings. This is because the non-uniform thickness profile such as so-called ‘dog-bone’ or ‘pillow’ shapes compromise winding’s geometrical integrity, which is especially critical for dry-wound pancake coils. Non-uniform also has significant impact on the...
Go to contribution page -
Wenjie Han03/07/2025, 08:45
The BUMP magnet is an important part of a high intensity proton accelerator. In CSNS II, to achieve high injection power and improve injection efficiency, the magnetic field of the BUMP magnet would be increased to 0.55 T with a faster ramping rate of 3500T/s. Considering the limitation of the saturation magnetic field of soft ferrite, a 0.15 mm silicon steel sheet is adopted. At this time,...
Go to contribution page -
Yutong Fu (Shanghai Jiao Tong University)03/07/2025, 08:45
In view of the challenges such as small range, low accuracy and weak tracking ability in current measurement of high-temperature superconducting cable for ultra-high field magnets, a high precision and fast response current measurement scheme based on core coil improvement and superconducting coil compensation is proposed. A DCCT high-temperature superconducting compensation coil has been...
Go to contribution page -
Dr Kwangmin Kim (National High Magnetic Field Laboratory)03/07/2025, 08:45
Currently, The National High Magnetic Field Laboratory (NHMFL) is in the process of developing a 40 T High Temperature Superconducting (HTS) user magnet, and for the magnet development, it is essential to evaluate the performance of a large number of HTS modules in the future. Typically, each HTS module requires performance evaluation after winding and before being assembled into a magnet....
Go to contribution page -
Wonseok Jang (Seoul National University)03/07/2025, 08:45
High-temperature superconducting (HTS) motors have emerged as a compelling alternative to conventional copper-based systems by achieving significantly higher current density and stronger magnetic fields, thereby realizing remarkable increases in torque density. These advantages have spurred intensive research into adopting HTS motors for electric propulsion in aircraft and ships. While...
Go to contribution page -
Steve Krave03/07/2025, 08:45
During the production of Nb3Sn coils for the Hi-Lumi LHC, some differences have been observed in coil performance in coils that follow a mostly identical fabrication process. Post mortem analysis on underperforming coils has indicated conductor degradation in regions of high stress/strain gradients as a result of filament cracking. To better understand the mechanisms for this behavior, a...
Go to contribution page -
Philip C. Michael (MIT Plasma Science and Fusion Center)03/07/2025, 08:45
High-temperature superconducting (HTS) Twisted-Stacked-Tape-Cable (TSTC) conductors have been developed for use in high-field magnets, particularly those needed for compact, high-field fusion tokamaks. TSTC conductors generally contain a large number of simply-stacked RE-Ba2Cu3O7-x (RE=rare earth) (REBCO) coated conductors inserted into helical channels in a round former. Multiple versions...
Go to contribution page -
Bárbara Santos (Rio de Janeiro State University)03/07/2025, 08:45
The integration of high-temperature superconductors (HTS) into fusion coil systems is a key advancement for magnetic confinement fusion technology. HTS conductors provide significant benefits, including higher operational thresholds for temperature, transport current, and magnetic fields, which are pivotal for future fusion applications. A previous study introduced an innovative HTS sector...
Go to contribution page -
Dr Geonwoo Baek (Korea institute of Fusion Energy)03/07/2025, 08:45
Strong magnetic fields might be crucial for enhancing the performance of nuclear fusion devices. High-temperature superconducting (HTS) tapes have emerged as promising materials due to their capability of carrying high current densities in high-magnetic field environments. Alongside with various types of HTS conductors for fusion proposed by numerous research institutions, in our previous...
Go to contribution page -
Gabriele Colombo (Department of Electrical, Electronic and Information Engineering “Guglielmo Marconi” - DEI, University of Bologna, Italy)03/07/2025, 08:45
The slotted core configuration is a promising candidate for the implementation of High-Temperature-Superconducting (HTS) magnets in compact fusion reactors. Quench dynamics is not yet fully understood in this type of cable and experimental and numerical investigations are still required to fully characterize their behavior in the operative conditions relevant to fusion machines.
Go to contribution page
In this work,... -
Alexandre Torre03/07/2025, 08:45
CEA has been studying the advantages of a conductor based on an assembly of CORC-like cables (CORC®: Conductor on Round Core) in the high field zone of a hybrid Central Solenoid (CS) magnet for EU-DEMO. To this end, the detailed study of geometrical and electrical parameters of a CORC-like structure are studied in order to evaluate the cable’s electrical performance as well as to determine a...
Go to contribution page -
Ariel Haziot (CERN)03/07/2025, 08:45
Canted Cosine Theta (CCT) magnet is a very interesting design for compact accelerators or gantry systems for hadron-therapy. Indeed, it offers great flexibility in generating complex field harmonics in straight and curved configurations for which compactness is even higher. The Fusillo project at CERN aims to design, build, and test a Nb-Ti curved CCT dipole demonstrator generating 3 T at 4.5...
Go to contribution page -
Dr Yanbing Yang (Guoke Ion (hangzhou) Medical Technology CO.,LTD)03/07/2025, 08:45
Lanzhou Ion Therapy Company, Ltd. (LANITH) began the research and development of miniaturized heavy ion therapy devices since 2022. The Gantry superconducting magnet, which composed of a curved dipole magnet and two quadrupole magnets at both ends of the dipole coil, is the core component of the whole device. At present, this project has completed manufacturing process for a prototype and a...
Go to contribution page -
Ernesto De Matteis (INFN Milano - LASA)03/07/2025, 08:45
The European I.FAST project’s WP8 initiative focuses on advancing Canted Cosine Theta (CCT) magnet technology using High-Temperature Superconductors (HTS). These magnets aim to revolutionize synchrotron and gantry designs by reducing their size and cost, offering transformative potential for research and hadron therapy. HTS materials enable higher magnetic fields and smaller cryogenic systems...
Go to contribution page -
Dr Arno Godeke (Compact PT)03/07/2025, 08:45
The treatment of cancers with particles is a superior modality compared to a treatment with X-rays. Particles are more effective and treatment is more localized, thereby sparing healthy tissues and reducing the risk of secondary tumors, resulting in an improved quality of life, as well as being the only radiation option for children and infants. Despite the clear advantages of particle therapy...
Go to contribution page -
Adwaith Ravichandran (Argonne National Laboratory)03/07/2025, 08:45
Superconducting gantries are required to reduce the size and cost of proton or carbon beam delivery systems for cancer radiation treatment. To map out the whole volume of a tumor, a well-focused pencil beam is scanned over the tumor in the two transverse directions while beam penetration and energy deposition in the axial direction is achieved by adjusting the beam energy. To minimize the...
Go to contribution page -
Sihan Feng (huazhong university of science and technology)03/07/2025, 08:45
Halbach dipole cylindrical magnets have attracted significant attention due to their ability to generate high magnetic flux density within limited space. However, the end-effect significantly impacts the uniformity of the magnetic field, hindering the application of Halbach dipole arrays, especially in low-field MRI. Currently, most optimization methods focus on adjusting the geometric...
Go to contribution page -
Maria Baldini03/07/2025, 10:45Contributed Oral
As part of the US Magnet Development Program, Lawrence Berkeley National Laboratory (LBNL) is developing high field stress-managed Nb3Sn dipole magnets using canted-cosine-theta (CCT) technology. A series of epoxy two-layer magnets, CCT3/4/5, with short sample bore field of approximately 10 T and a 90 mm diameter open aperture have been designed, fabricated, and tested. The third and final...
Go to contribution page -
Hiroshi Miyazaki (Kyushu University)03/07/2025, 10:45Contributed Oral
We are developing an advanced electric propulsion system as a promising solution to achieve carbon-neutral growth in the aviation sector. In a previous study, we successfully developed and tested a 400 kW-class fully superconducting synchronous machine using REBCO racetrack-shaped coils for both the field and armature. The cooling system utilized sub-cooled liquid nitrogen for the armature...
Go to contribution page -
Prof. Seungyong Hahn (Seoul National University)03/07/2025, 10:45Invited Oral
REBCO has been regarded as one of the most promising high temperature superconductor (HTS) options mainly due to its large in-field current carrying capacity and strong substrate mechanical toughness. Thus, it may not be a surprise that the recent high expectation on compact fusion has been largely relying on REBCO conductor and magnet technologies. Despite the recent notable achievements in...
Go to contribution page -
Diego Arbelaez03/07/2025, 11:00Contributed Oral
A key focus of the US Magnet Development Program (USMDP) is the development of stress-managed magnets with minimal training and operating near the short sample limit. Training free behavior was previously demonstrated in a paraffin-wax-impregnated subscale (canted-cosine-theta) CCT dipole as part of the CCT subscale magnet program at Lawrence Berkeley National Laboratory. A subsequent...
Go to contribution page -
Noah Salk03/07/2025, 11:00Contributed Oral
The field of electrified aircraft propulsion is undergoing a transformative evolution, driven by breakthrough advancements in superconducting electrical machines. Significant interest exists in the development of closed-loop, rotor-mounted cryocooler superconducting rotors, with several projects pursuing this innovative approach. This design simplifies the cryogenic requirements of...
Go to contribution page -
Dr Andrew V. Gavrilin (National High Magnetic Field Laboratory, Florida State University)03/07/2025, 11:05Invited Oral
Our experience with REBCO coils comes primarily from the development of high-field double-pancake/module wound coils for NMR magnet systems. However, many of the conclusions we have reached are quite general. We focus on insulated/insulation coils with a distributed stainless-steel co-wind as the least problematic and thus more promising for our projects, although we also have some experience...
Go to contribution page -
Dr Ramesh Gupta (Brookhaven National Laboratory)03/07/2025, 11:15Contributed Oral
Design, construction, and test of a ~3.8 T, 114 mm aperture dipole based on the Optimum Integral Design using the Direct Wind technology will be presented. This work is being carried by Particle Beam Lasers, Inc. (PBL) and the Brookhaven National Laboratory as a part of the Small Business Technology Transfer (STTR) program. The design significantly reduces the loss of effective length due to...
Go to contribution page -
Prof. Tabea Arndt (KIT)03/07/2025, 11:15Contributed Oral
Most conventional wind power generators need a high amount of rare-earth permanent magnet material (RE-PM).
Go to contribution page
Gearless low-speed solutions (≈10 rpm) require ≈0.5 ton/MW of RE-PMs. Most work on High-Temperature Superconductors (HTS) in wind power generators has been focused on this type so far and requires high amounts of HTS tapes.
Geared mid-speed solutions (400…600 rpm) need only ≈50 kg/MW... -
Riva Nicolo (Proxima Fusion)03/07/2025, 11:25Invited Oral
This presentation aims to provide a concise overview of the current modeling capabilities and highlight critical gaps in simulation and protection strategies for large REBCO coils. High Temperature Superconductors (HTS) are revolutionizing the design of magnetic confinement systems for nuclear fusion and beyond, offering compactness and efficiency through their ability to generate high...
Go to contribution page -
Douglas Martins Araujo03/07/2025, 11:30Contributed Oral
The Magnet Development (MagDev) laboratory at the Paul Scherrer Institute (PSI) has designed and successfully manufactured the first subscale stress-managed common coil magnet. The magnet was tested at CERN and reached 98% of its short sample current. Following the high-field magnet roadmap of the Swiss Accelerator Research and Technology initiative (CHART), a new magnet was assembled after...
Go to contribution page -
Mike Tomsic03/07/2025, 11:30Contributed Oral
Hyper Tech Research will report on progress that has been made on developing high purity aluminum (HPAL) and magnesium diboride superconductor wires, cables and coils with significantly lower AC losses. The use of HPAL low AC loss stands will enable high power density motors and generators in the 35-45 kW/kg range, with efficiencies in the range of 99%. HPAL low AC loss coils for stators can...
Go to contribution page -
Giuseppe Montenero (PSI)03/07/2025, 11:45Contributed Oral
This paper presents the measurement results of the Triplet magnets assemblies for the Swiss Light Source (SLS) 2.0 upgrade. Emphasises is given to the measurement challenges related to the tuning process of those magnets guarantying the production quality. The complete renewal of the SLS storage ring (SLS 2.0) relies on the longitudinal gradient bend (LGB) function, implemented by a Triplet,...
Go to contribution page -
Dr Alexander Otto (Solid Material Solutions LLC)03/07/2025, 11:45Contributed Oral
Higher field, much lighter-weight and more efficient ac magnets that can operate at affordably cooled temperatures above 12 K require HTS. Stator coils for example operate in fast AC modes where HTS tapes cannot be used due to excessive induction-driven losses, requiring instead HTS as small cross-sectioned, fine-filament, axially twisted wires in transposed cable forms. An approach has been...
Go to contribution page -
Daniel Korsun (MIT Plasma Science and Fusion Center)03/07/2025, 11:45Invited Oral
Non-insulated (NI) magnets made of rare-earth barium copper oxide (REBCO) high-temperature superconducting tapes are of interest for a variety of different magnet applications, such as in the toroidal field magnets of fusion devices. One of the primary reasons for this is the potential ability for NI coils to passively protect themselves against damage during a rapid global loss of...
Go to contribution page -
Erik Schnaubelt (CERN)03/07/2025, 11:55Invited Oral
This talk provides an overview of several protection concepts and simulation tools, specific to REBCO coils, that are currently under development within the TE-MPE group at CERN. Capacitive discharge and more efficient variants of the Coupling Loss Induced Quench method will be presented as promising new protection methods. While simulation tools for LTS magnets are well developed and...
Go to contribution page -
Dr Yoonhyuck Choi (Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA)03/07/2025, 12:00Contributed Oral
Since commissioning in 2022, the Facility for Rare Isotope Beams (FRIB) has successfully delivered over 270 rare isotope beams, including the discovery of five new rare isotopes. To fully leverage the scientific potential of FRIB, a new High Rigidity Spectrometer (HRS) has been proposed to overcome the limitations of the existing Spectrometer of S800, the legacy from the NSCL era.
Go to contribution page
The HRS... -
718. Thu-Mo-Or2-06: Modular consequent pole direct-drive superconducting generator for offshore windMr Curtis Hebert (GE Aerospace)03/07/2025, 12:00Contributed Oral
Offshore wind power generation is pivotal for the decarbonization of the energy sector, with projections indicating that installed capacity could exceed 200 GW by 2030. As turbine size and power ratings increase, the industry encounters challenges concerning components such as blades, structures, and generators. Partially superconducting generators (SCGs) (superconducting field, normally...
Go to contribution page -
Maria Baldini, Maxim Marchevsky03/07/2025, 12:10Invited Oral
Accelerator magnets based on high-temperature superconductors will be fundamental to producing a field in excess of 16 T for future HEP machines. One of the known challenges of practical conductors made with HTS materials is a slow normal zone propagation resulting from a large superconducting temperature margin in combination with a higher heat capacity compared to conventional...
Go to contribution page -
Zhan Zhang (Institute of Energy (IE) Hefei Comprehensive National Science Center (HCNSC))03/07/2025, 12:15Contributed Oral
REBCO high-temperature superconductor has been widely used in high magnetic field applications, because of the excellent critical current properties and high critical temperature. However, REBCO tape has a huge width-to-thickness ratio (typically in the range of 1000-10000) to cause too high power dissipation in the applications. One of the effective ways to reduce AC loss is to divide the...
Go to contribution page -
Jonghoon Yoon03/07/2025, 12:15Contributed Oral
Recently, due to the electrification of mobility systems such as aircraft and ships, the development of high power density propulsion systems has been actively researched. In conventional electric machines based on permanent magnets and copper, the power density is limited due to constraints in current density and magnetic field. As an alternative, high-temperature superconducting (HTS)...
Go to contribution page -
03/07/2025, 12:30
-
Mr Jin Kwon03/07/2025, 12:30Contributed Oral
Bi:2212 is a well-known high current superconductor which can be made in round wire form. It has usually been of interest for DC or low ramp applications because of both filament bridging and also a high Ag content which encourages large coupling and eddy current losses. However, a new low loss Bi:2212 has been under development which both attempts to suppress the bridging as well as eddy and...
Go to contribution page -
Joseph DiMarco03/07/2025, 14:00
The Spallation Neutron Source (SNS) at ORNL was being upgraded from 1.0 GeV to 1.3 GeV (or 1.4 to 2.8 MW). Several water-cooled magnets got upgraded to transport 30% higher beam energy. Fermilab contributed the magnet design for the new chicane magnets and injection/extraction septum. Designing the magnets was a challenging task because the new magnets required good combined integrated field...
Go to contribution page -
Ariel Haziot (CERN)03/07/2025, 14:00
As part of the High Field Magnet program (HFM) at CERN, the Nb3Sn block coil configuration is a candidate for the main dipole in future large hadron collider as FCC-hh. To reduce the cost, the use of material grading in the block coil is explored by using NbTi conductor instead of Nb3Sn in the external low field regions. Different designs are being investigated for dipoles with a target...
Go to contribution page -
Benjamin Szabo (FNAL)03/07/2025, 14:00
The Oak Ridge National Laboratory STS Project will enhance the Spallation Neutron Source by adding a new neutron source. The upgrade includes a 30% increase in beam energy and a 50% boost in beam current, doubling the accelerator's power capability to 2.8 MW. The Ring-to-Second-Target Beam Transport (RTST) system is vital in directing high-energy proton beams to the target. A key element of...
Go to contribution page -
Mr Benjamin Szabo (FNAL)03/07/2025, 14:00
There are 96 combined function magnets, 48 focusing and 48 defocusing, that have been in operation in the Fermi NAL Booster without a critical failure requiring replacement for over 50 years. The Proton Improvement Plan-II (PIP-II) poses risk to these magnets and Fermilab does not currently have the tooling or knowledge of process to fabricate spares. A longer straight section between two...
Go to contribution page -
Krzysztof Piotr Kawa (AGH University of Krakow (PL))03/07/2025, 14:00
A new eddy current septum for the fast extraction from CERN’s Proton Synchrotron has been designed and constructed. This development aims to improve the magnet's reliability, extend its service interval, and reduce radiation exposure for maintenance personnel. The new eddy current device is set to replace the existing direct-drive magnet and its ageing power converter.
Go to contribution page
This paper summarizes... -
Wenjie Han03/07/2025, 14:00
The remould of the magnet of CSNS injection system is an important part of CSNS II magnet, which includes three septum magnet: two DC septum and one plused septum. Due to the installation limitation, the thickness of the shielding should be less than 2mm and the leakage field in the RCS is required to be less than 0.1%. This paper introduces the design and measurement of a DC Septum Magnet...
Go to contribution page -
Changdong Deng03/07/2025, 14:00
In the CSNS-II, the energy of the H¯ ion beam from the linear accelerator will be increased from the current 80 MeV to over 300 MeV. Consequently, the integrated magnetic field strength of all magnets in the RCS injection system will be raised by 2 to 2.5 times compared to the requirements during the CSNS phase. To achieve the complex functions of the injection system within a constrained...
Go to contribution page -
Diego Arbelaez (Lawrence Berkeley National Laboratory)03/07/2025, 14:00
We present progress in the design and fabrication of CCT6, a Canted Cosine Theta (CCT) Nb3Sn magnet considered as part of the general R&D program for high field superconducting magnets supported by the US Magnet Development Program (US-MDP). Future testing with HTS inserts in a hybrid configuration motivates the design’s large clear aperture of 120 mm and target operating dipole field of 12-14...
Go to contribution page -
Brett Parker (Brookhaven National Laboratory (US))03/07/2025, 14:00
The Interaction Regions (IR) for the FCC-ee collider as envisioned by the CERN FCC Feasibility Study requires a variety of superconducting correction coils that must be integrated with the main IR focusing quadrupoles. The present technological basis for these main quadrupoles is to wind superconductor supported in side-by-side slotted tubes, located deep inside the experimental detector...
Go to contribution page -
Prof. Thomas Taylor (Ettore Majorana Cent. Sci. Culture (IT))03/07/2025, 14:00
The report will explore the societal context of the major turning points in the application of superconductivity that have been crucial for the development of magnet technology. This is relevant in that we are now at a point where a further breakthrough is necessary to enable the development of affordable high field magnets (16 to 20 tesla dipoles), appropriate for series production and...
Go to contribution page -
Yifeng Li (Beijing Jiaotong University)03/07/2025, 14:00Poster
Cable-In-Conduit-Conductor (CICC) is particularly suitable for applications requiring both high magnetic fields and efficient current transmission, such as in particle accelerators, magnetic resonance imaging (MRI) systems, and high-field magnets. To further enhance the current-carrying capability of CICC, we developed a CICC conductor in which the CORC strands are made up of 24 layers, with a...
Go to contribution page -
Xudong Wang (Inter-University Research Institute Corporation High Energy Accelerator Research Organization)03/07/2025, 14:00Poster
The development of high-current cables made of rare-earth barium copper oxide (REBCO) coated conductors is a key technology for high-field accelerator magnets above 16 T. A flexible round REBCO cable has been proposed as one of the candidates for the high-current cable. This round REBCO cable consists of many coated conductors wound in multiple layers in a helical configuration on a metal...
Go to contribution page -
Shuhao Peng03/07/2025, 14:00Poster
High-temperature superconducting Conductor on Round Core（CORC）cable, with advantages of strong current-carrying capacity, low loss, light weight, and good bending performance, has become an excellent choice for winding high-field magnets and meeting the requirements of magnetic field shaping. In particular, CORC cable has great potential in manufacturing the Central Solenoid magnet (CS magnet)...
Go to contribution page -
Zhixing Yang03/07/2025, 14:00Poster
Compared with traditional reactors, superconducting reactors have the advantages of small volume, light weight, high efficiency and low harmonics, which are more conducive to improving the stability of the power system. During operation, transport AC loss may bring unexpected huge burdens to the cryogenic system, thus affecting its operational stability. Accurately evaluating the AC loss...
Go to contribution page -
Junfeng Yang (Beijing Jiaotong University), Shaotao Dai03/07/2025, 14:00Poster
In order to satisfy the magnetic requirements of high current, high-field and excellent mechanical properties of magnet systems in future fusion devices, a compact high-current-carrying conductor structure inspired by quasi-isotropic strand (QIS) and twisted stacked tape cable (TSTC) structures is proposed in this paper. By placing three groups of equal volume but different direction HTS...
Go to contribution page -
Dr Yusuke Sogabe03/07/2025, 14:00Poster
Spiral copper-plated striated coated-conductor (SCSC) cables, in which copper-plated multifilament coated conductors are wound around a metal core with a circular cross-section, are characterized by both low ac losses and high robustness against thermal runaway or quench, as well as large current capacity and excellent mechanical flexibility. Taking advantage of these features, SCSC cables are...
Go to contribution page -
Milan Majoros03/07/2025, 14:00Poster
High energy physics magnets use superconducting cables to decrease their inductances which limit their induced voltages during magnet ramp rates and quenches. For HTS strands, the minimum quench energy (MQE) is quite large. Heating due to small defects within the cable can be mitigated by strand-to-strand current sharing. In this case of particular interest are REBCO tape stacks, Roebel and...
Go to contribution page -
Itaru Abe (Toshiba Energy Systems & Solutions Corporation)03/07/2025, 14:00Poster
We have been developing the SCSC cable (Spiral Copper-Plated Striated Coated-Conductor Cable) consisting of copper-plated striated (multifilament) coated conductors wound spirally around a round core. Its spiral geometry decouples filaments electromagnetically against transverse magnetic fields like twisted low Tc superconductor wire and, then, reduces AC loss. The copper helps current sharing...
Go to contribution page -
Yufan Yan (Lawrence Berkeley National Laboratory)03/07/2025, 14:00Poster
Limited by filament size, the dimensions of Rare-earth Barium Copper Oxide (ReBCO) cables are usually comparable to the width of the constitutive tape strands. Resultantly, the distribution and redistribution of currents amongst strands can have a strong impact on the behaviors of the cable, including current-voltage characteristics and in-field performance. In this study, we present a...
Go to contribution page -
Mr Curtis Hebert (GE Aerospace)03/07/2025, 14:00
One of the greatest challenges in designing the superconducting field winding for a superconducting generator (SCG) is balancing mechanical loads while limiting heat that can enter via mechanical structure. This paper outlines the thermal and mechanical co-design of the field coils for a low speed, high torque, partially superconducting generator using LTS wire. Mechanical design is focused...
Go to contribution page -
Dr Yuwei Liu (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)03/07/2025, 14:00
With the growing prevalence of electrical propulsion technology in aerospace and new energy applications, high-temperature superconducting (HTS) motors have garnered substantial interest due to their high efficiency and power density. Among these, axial flux motors (AFMs) stand out for their compact design and superior efficiency, positioning them as a promising candidate for future electrical...
Go to contribution page -
Jiahui Zhu03/07/2025, 14:00
It is urgent to address the problems of reactive power imbalance in the power grid with a high proportion of renewable energy. Compared to traditional reactive power regulation devices, a superconducting synchronous condenser is an appreciate choice due to its higher power density, faster response time for reactive power regulation, and higher operational efficiency. To minimize the mass and...
Go to contribution page -
JuKyung Cha (Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Korea)03/07/2025, 14:00
High-purity aluminum armatures present a viable alternative to traditional superconducting armatures, which can face quench issues during AC operation despite their high-power density. Leveraging the low electrical resistance and lightweight properties of high-purity aluminum at cryogenic temperatures, this study presents the development of an armature for a 500 kW partially superconducting...
Go to contribution page -
Mr Wooyoung Choi (Korea Maritime and Ocean University)03/07/2025, 14:00
Axial-flux permanent magnet (AFPM) motors have gained significant attention in industries such as electric vehicles and ships due to their compact size, high torque density, and superior efficiency. While various AFPM designs have been proposed, this study focuses on the yokeless and concentrated armature structure, which offers unique advantages by eliminating the stator yoke. This reduces...
Go to contribution page -
Jaheum Koo (Department of Electrical and Computer Engineering, Seoul National University, 08826, Korea)03/07/2025, 14:00
Using a superconducting bulk into the rotor enables torque generation by inducing current through an external armature, similar to the principle of an induction motor, without the need for direct current application to the rotor. This topology can reduce rotor resistance losses compared to conventional induction motors due to the low resistance of the superconducting material. Moreover, this...
Go to contribution page -
Dr Jianqiao Xiao (Hinetics Inc)03/07/2025, 14:00
Introduction
Go to contribution page
A torque tube with a low heat-conduction spoke torque tube was introduced in an earlier study. This study explores the characteristics and design trade-offs of this topology using a combination of analytical models and experimental validation. Results indicate that the spoke-supported topology generally favors small diameters due to its negligible heat leakage. Additionally,... -
Boun Seo03/07/2025, 14:00
In this paper, we present a method for determining the appropriate charging current waveform to mitigate the screening current-induced field (SCF) in an NMR class high temperature superconducting (HTS) magnet. Screening currents have been observed to cause magnetic field drift in NMR class HTS magnets, leading to a degradation in performance. To address this performance degradation, various...
Go to contribution page -
Takanobu Mato03/07/2025, 14:00
The no-insulation (NI) technology is a powerful technique toward very high field generation over 40 T. The National High Magnetic Field Laboratory (NHMFL), in 2017, successfully generated a field of 45.5 T, which is the world record for the DC field [1]. The success is attributed to the use of rare-earth barium copper oxide (REBCO) and the NI technology. REBCO conductors can withstand a very...
Go to contribution page -
Jaehyeok Han03/07/2025, 14:00
We report a newly developed room-temperature (RT) shimming method for high-temperature superconducting (HTS) magnets employing a deep Q-network (DQN), a type of reinforcement learning theory. With only one training session, the shimming control system (agent) learns how to improve the spatial field homogeneity of an HTS magnet and quickly implements the actual shimming process even under...
Go to contribution page -
Haoran Chen (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China)03/07/2025, 14:00
In the design of ultrahigh field magnetic resonance imaging (MRI) superconducting magnets, it typically requires a high homogeneous magnetic field in the diameter of spherical volume (DSV) to obtain high quality image. Spherical harmonic based B0 shimming relies significantly on the fitting process, which can be computationally demanding, especially when handling a large number of shim coils....
Go to contribution page -
Ketaki Tamhankar (Thea Energy, Inc.), Thomas Ikuss (Thea Energy, Inc.)03/07/2025, 14:00
“Eos”, Thea Energy, Inc.’s first integrated fusion system, will utilize arrays of small, optimized planar coils that help to mitigate manufacturing complexity found in prior generations of the stellarator. To properly shape the magnetic fields necessary for plasma confinement, Eos will require hundreds of these planar coils; Thea Energy’s ability to reliably and quickly produce them will be...
Go to contribution page -
MingLiang Liu (Institute Of Plasma Physics Chinese Academy Of Sciences)03/07/2025, 14:00
The background magnets of the superconducting conductor test facility (Super-X) are composed of CICC-wound superconducting coils, weighing approximately 100 tons, and are actively cooled using supercritical helium. During the cooling process, fluctuations in the chiller's power and the complexity of heat transfer may cause deviations from the designed cooling process. These factors hinder the...
Go to contribution page -
Su Xin Wang (Huazhong University of Science and Technology)03/07/2025, 14:00
The analysis and calculation of magnetic fields serve as the cornerstone for magnet design. In scenarios requiring intricate spatial magnetic field configuration optimization, high-throughput analytical computations are often necessary, posing significant computational cost challenges to existing finite element method (FEM)-based approaches. In recent years, surrogate model computations...
Go to contribution page -
Dr Masayoshi Ohya (Kwansei Gakuin University)03/07/2025, 14:00
High-temperature superconducting (HTS) generators cooled by liquid hydrogen are being researched and developed, with a 6kA-class assembled conductor required to superconduct the field winding of a 600 MW-class generator. The development target was a conductor consisting of 9 HTS wires in a thiree-layer structure with a 5 mm diameter former. To verify the current capacity of the assembled...
Go to contribution page -
Joseph DiMarco03/07/2025, 14:00
Fermilab is upgrading its Booster synchrotron to increase its ramp rate and intensity. This is part of the Proton Improvement Plan (PIP-II) that will allow the Main Injector to achieve proton beam power of 1.2 MW within the next few years. This upgrade includes running the 55 year old Booster magnets at 20 Hz instead of the usual 15 Hz, and construction of some shorter and wider aperture...
Go to contribution page -
Bin Feng (university of bristol)03/07/2025, 14:00
The development of multi-filamentary high-temperature superconducting (HTS) tape represents a significant research direction for the advancement of future applications, largely due to its lower AC loss. The AC loss characteristics of the multi-filamentary structure have been the subject of extensive experimental and finite element simulation studies. Nevertheless, there remains a research gap...
Go to contribution page -
Dr Sung-Kyu Kim (Korea Electrotechnology Research Institute)03/07/2025, 14:00
High-temperature superconducting (HTS) coils are widely utilized in magnet applications due to their superior performance in compactness and energy efficiency. Traditionally, the critical current (Ic) of HTS coils has been measured using the 100 μV/m criterion, adopted from the international standard for second-generation HTS wires. However, as discussed in previous research, this criterion...
Go to contribution page -
Zhuoheng Li (Wuhan National High Magnetic Field Center and the College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)03/07/2025, 14:00
Under pulsed high magnetic fields, the interaction between the magnetic field and the spin of a material provides a unique opportunity to explore various magnetic properties, such as magnetization, dielectric polarization, and magnetostriction. These properties are critical for characterizing the diverse phase transitions that materials undergo. Among the measurement techniques available,...
Go to contribution page -
Josh Ellingham (OpenStar Technologies)03/07/2025, 14:00
OpenStar Technologies Ltd is pursuing a levitating dipole reactor (LDR) for fusion energy production. As part of the first LDR prototype, a 5.6 T, 1.44 kA HTS magnet, Junior, has been successfully designed, built and tested.
Junior consists of 14 non-insulated (NI), solder impregnated HTS coils connected in series. Coil parameters such as radial resistance and joint resistances are...
Go to contribution page -
Zvonko Lazic (Open Star)03/07/2025, 14:00
Open Star Technologies is advancing the Levitated Dipole reactor concept, utilizing high-temperature superconducting technology to maintain a toroidal magnetic field for effective plasma confinement. Inspired by Earth's magnetic field, this innovative approach offers distinct advantages over other fusion concepts. It enables rapid iteration cycles, ensures inherently stable plasma physics, and...
Go to contribution page -
Prof. Roberto Bonifetto (NEMO Group, Dipartimento Energia, Politecnico di Torino, Torino 10129, Italy)03/07/2025, 14:00
After the first plasma in 2006, the Experimental Advanced Superconducting Tokamak (EAST) is approaching now 20 years of operation. It has been the first tokamak featuring both toroidal and poloidal superconducting coils. In particular, its toroidal field (TF) magnet system is composed by 16 coils with an height of about 4 m.
Go to contribution page
The superconducting coils are operated at a temperature of 4.5 K,... -
Mr Peter Titus (Princeton Plasma Physics Laboratory)03/07/2025, 14:00
Startup and quench behavior in a FNSF scale Toroidal Field (TF) HTS magnet were explored in a previous ASC paper. In that study a mix of superconducting and resistive materials are
Go to contribution page
arrayed in a Bitter Plate like arrangement. In the studies presented here, various quench mitigation scenarios are explored. The conductor arrangement is a parallel set of HTS channels with radially... -
Jamal Olatunji (Thea Energy)03/07/2025, 14:00
Stellarators confine plasma in a stable toroidal configuration using twisted external magnetic fields. However, this requires complex 3D coil shapes that can pose a significant design, manufacturing, and maintenance challenge. To address this challenge, Thea Energy, Inc. is developing the planar coil stellarator. This approach utilizies multiple smaller, individually energized coils that...
Go to contribution page -
Dr Siyuan Chen03/07/2025, 14:00
Pulsed high-field magnets are commonly reinforced with Zylon fiber to counterbalance the inter-radial Lorentz forces. However, these magnets usually undergo unintended axial disruptions. Previous studies have shown that Zylon fiber-reinforced polymers (ZFRPs) exhibit limited transverse and in-plane shear strength. This limitation results in substantial transverse damage at the ends of the...
Go to contribution page -
Wenzhe Li (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)03/07/2025, 14:00
Conventional high-field pulsed magnets employ layered reinforcement techniques, where high-strength fiber composites are inserted around each conductor layer within solenoid coils to withstand the substantial Lorentz forces. For magnets exceeding 80 T, the required reinforcement layer thickness exceeds 5 mm. However, this design reduces the conductor filling factor and increases the coil...
Go to contribution page -
Ke Han03/07/2025, 14:00
Pulsed magnets in the US National High Magnetic Field Laboratory (MagLab) use rectangular cross-section conductors that reinforced by Nb-fibers. During the manufacture of the conductors, large deformation strain was required, leading to very high internal stresses. The internal stresses affected deformation behavior of the conductors. This special deformation behavior was reflected in...
Go to contribution page -
Luchen Wei (Huazhong University of Science and Technology)03/07/2025, 14:00
Accelerating the cooling rate of pulsed magnets has a significant impact on the efficiency of physics experiments. Inserting axial liquid nitrogen cooling channels in the magnet is a common method to accelerate the cooling rate. However, the cooling channels prevent stress from being transmitted between the layers of the magnet, which reduces the structural strength and increases the design...
Go to contribution page -
Mr Simon Tardieu (CNRS - Laboratoire National des Champs Magnétiques Intenses, EMFL, CNRS-INSA-UGA-UPS)03/07/2025, 14:00
Copper-based conductive wires with both a high strength and a high electrical conductivity could find applications in aerospace and power engineering as well as in niche scientific applications such as materials for the production of high-field pulsed magnets. Indeed, in order to produce non-destructive fields, the coils must be wound of wires with a very high mechanical strength to resist...
Go to contribution page -
Mr Simon Tardieu (CNRS, Laboratoire National des Champs Magnétiques Intenses, INSA-UGA-UPS-EMFL)03/07/2025, 14:00
MegaGauss facilities provide a unique environment to study materials under extreme conditions. This not only concerns samples exposed to the magnetic field in the center of a coil, but also the coil itself. The present study focuses on the deformation of copper single-turn coils (STC), specifically analyzing the impact on the material microstructure. While generating the field, STC undergo...
Go to contribution page -
ZhiWei Kang (HuaZhong University of Science and Technology)03/07/2025, 14:00
Single-turn coil (STC) is a kind of destructive pulsed magnet with the peak magnetic field higher than 100 T. Due to the extremely high current rising rate and peak discharge current, gas switches are often used to control the parallel discharge of multiple capacitors. However, gas switches generally have long jitter times and their triggering is difficult to maintain a high degree of...
Go to contribution page -
Wenbo Yang (Huazhong University of Science and Technology)03/07/2025, 14:00
Single-turn coil (STC) is a mainstream destructive pulsed magnet used to generate ultra-high magnetic field beyond 100 T. During the discharge process, STC is in extreme physical states with extremely high pressure and high strain rate deformation, leading to fracture and explosion of the coil. This study investigates the damage and destruction process of STC using three-dimensional finite...
Go to contribution page -
Ning Wang (Huazhong University of Science and Technology)03/07/2025, 14:00
Single-turn coil (STC) is a type of destructive pulsed magnet used to generate ultra-high magnetic fields ranging from 100 T to 300 T. In this study, a three-dimensional finite element simulation model of the STC is established, and the electric field distribution properties with different coil sizes and power excitations are investigated to assess the possibility of radial electric breakdown...
Go to contribution page -
Hui-Huang Chen (NSRRC)03/07/2025, 14:00
This report details the mechanism design and heat load budget for a cryostat that replace liquid helium and liquid nitrogen with commercially available cold heads (cryocoolers). However, to ensure the proper functioning of cryogenic superconducting magnets with the limited cooling capacity of cryocoolers, careful management of heat transfer, insulation, cooling, electrical power, and vacuum...
Go to contribution page -
Mohit Jadon (ITER Organization)03/07/2025, 14:00
Magnet Cold Test Bench (MCTB) is a test facility under development to test the superconducting Toroidal Field (TF) and Poloidal Field (PF-1) magnets at ITER. The testing of the magnets will be performed at 4K cryogenic temperature. The cryostat is required for housing the TF and PF-1 magnets in the vacuum environment for test at cryogenic temperature.
The material of construction for the...
Go to contribution page -
Dr Patricia Tavares Coutinho Borges De Sousa (CERN)03/07/2025, 14:00Invited Poster
In the framework of the Future Circular Collider (FCC) study at CERN, a conceptual design of a cooling scheme for Nb$_3$Sn-based accelerator magnets operating at 4.5 K is proposed for the FCC-hh (hadron) configuration. This alternative, at a higher operating temperature than the baseline at 1.9 K using Helium II, is motivated by a strong commitment to a more energetically...
Go to contribution page -
Thomas Nes (EPFL-SPC)03/07/2025, 14:00
The Swiss Plasma Center is proposing an upgrade to the EDIPO test facility (EDIPO 2), which will generate a 15 T background field within a 144×144 mm² aperture. This upgrade will enable variable-temperature, high-current testing of superconductor samples, enhancing the facility’s capabilities for advanced material research and development. This work presents an overview of the progress on the...
Go to contribution page -
Yubin Kim (Changwon National University)03/07/2025, 14:00
Multi-Layer Insulation (MLI) is widely used in cryogenic systems to effectively suppress radiation due to temperature differences. In particular, MLI plays a crucial role in reducing cooling energy consumption and maintaining the thermal stability of superconducting coils in superconducting magnet systems. High-field superconducting magnets require cryogenic environments to sustain high...
Go to contribution page -
Prof. Haizheng Dang (State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences)03/07/2025, 14:00
Several new controlled nuclear fusion systems are under development in China. To achieve the higher magnetic field intensity and to minimize the final size as well, the high-Tc superconducting magnets are adopted. There are a variety of rigorous requirements on the associated cryogenic system expected to provide 600 W at around 20 K, of which high-efficiency and high-reliability are especially...
Go to contribution page -
Lianrong Xu (Lawrence Berkeley National Laboratory), Li Wang (Lawrence Berkeley National Lab)03/07/2025, 14:00
A demonstrative NbTi based Mixed Axial and Radial field System (MARS-D) is being developed for a next-Generation Electron Cyclotron Resonance Ion Source (ECRIS) at Lawrence Berkeley National Laboratory, which employs a novel closed-loop coil design scheme that more efficiently utilizes conductor fields and extend the application of NbTi for high frequency (up to 45 GHz) ECR operation. The NbTi...
Go to contribution page -
Dr Tao Zhang (Xi’an Superconducting Magnet Technology Co., Ltd.)03/07/2025, 14:00
Superconducting magnets serve as pivotal components in advanced rail transportation, next-generation power systems, Magnetic Confinement Fusion, and other critical infrastructure. They find extensive applications across various sectors including industry, energy, medicine, large scientific apparatuses, and semiconductors. Superconducting magnets are typically cooled through coolant immersion...
Go to contribution page -
Dr Inmyung Park (Institute for Basic Science)03/07/2025, 14:00
Rare Isotope Accelerator Complex for ON-line experiments (RAON) is the first heavy ion accelerator facility in South Korea. RAON consists of two main superconducting linear accelerators: SCL2 and SCL3. SCL3 cryogenic system was successfully completed the cryogenic commissioning in 2022 and maintained the stable cryogenic environment for the first beam commissioning in 2023. However, SCL2-IF...
Go to contribution page -
Seojeong Kim03/07/2025, 14:00
The cryogenic system for accelerator complex for ON-line experiments (RAON), is designed to maintain extremely low temperatures to support superconducting equipment, such as superconducting linear accelerators and low-temperature superconducting magnets. Superconducting RF (SRF) cavities are integral to particle accelerators, where phase stability ensures precise particle acceleration. The...
Go to contribution page -
Qingquan Qiu03/07/2025, 14:00
Low temperature refrigeration is one of the important factors restricting the large-scale application of HTS magnets. Helium/Neon are the scarce resource in the earth and expensive; The thermal stability of HTS magnets directly cooled by refrigerator is poor, and the electrical insulation under low vacuum is also poor. Liquid hydrogen/LNG are flammable and explosive, which may cause safety...
Go to contribution page -
Tianya Meng (Shanghai Advanced Research Institute, Chinese Academy of Sciences)03/07/2025, 14:00
Cryogenic Permanent Magnet Undulator (CPMU) is an important kind of insert device at the synchrotron radiation facilities. The magnets of CPMU have a better magnetic performance than a conventional In-vacuum Undulator. The work temperature of CPMU magnets in C11 CPMU is below 80K. The cryogenic operation of CPMU requires a sub-cooled liquid nitrogen cooling system. The operational stability of...
Go to contribution page -
Kazuma Fukui03/07/2025, 14:00
JT-60SA is a superconducting tokamak for plasma fusion experiment developed in Japan. This is a joint international research and development project under the Broader Approach Agreement between Japan and Europe. The mass of the superconducting magnet system for JT-60SA is 750 tons. To cool down the magnets, the Helium Refrigeration System, which has an equivalent refrigeration capacity at 4.5...
Go to contribution page -
Dr Hankil Yeom (Korea Institute of Machinery & Materials)03/07/2025, 14:00
To generate a magnetic field exceeding 20 T, high-temperature superconductors (HTS) are essential. This study focuses on the conduction cooling experiments of high-temperature superconducting magnets capable of generating a 20 T magnetic field. This magnet is designed to operate at temperatures up to 20 K using hybrid HTS tapes, and the room temperature bore is 50 mm. To solve mechanical and...
Go to contribution page -
461. Thu-Af-Po.12-02: Development of Gas Blow Thermal Coupling for High-speed HTS Rotating MachineryKi Hwan Kim03/07/2025, 14:00Poster
High-temperature superconducting (HTS) motors and generators utilizing HTS magnets exhibit exceptional energy efficiency and output performance due to their high current density. In these systems, maintaining the rotating HTS magnets at cryogenic operating temperatures is crucial. Specifically, the rotor requires a thermal coupling structure to enable cryogenic cooling between the stationary...
Go to contribution page -
Mr Yuenan Ge (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)03/07/2025, 14:00Poster
High-temperature superconducting (HTS) motors have broad application prospects in fields such as energy and transportation due to their high efficiency and energy-saving characteristics. However, the vacuum and low-temperature conditions in their operating environment impose stringent requirements on sealing technology. This study addresses the sealing demands of HTS motors by designing a...
Go to contribution page -
Ziad Melhem (Oxford Quantum Solutions Ltd)03/07/2025, 16:00
Over the past few years, significant advancements have been made in superconducting technologies, particularly in the performance and supply of low- and high-temperature superconductors, cryogenics, and system integration. These developments are now ready for scaling up and deployment in a wide range of applications beyond their current uses, such as MRI, NMR, and various fields in physical...
Go to contribution page -
Jeff Whalen (MagCorp)03/07/2025, 16:20
The growth of superconducting magnets broadly disrupting private sector markets has been impressive over the past five years, especially in next generation MRI’s and other medical applications like radiation oncology. To successfully enter and fully service all the possible superconducting magnet markets, it is crucial that the formation and support of commercial ecosystems be a main focus of...
Go to contribution page -
David Pieklik (FloridaCommerce)03/07/2025, 16:30
Florida is on the verge of becoming a hub for one of the greatest scientific and economic opportunities of our time: the emergence of commercial high-temperature superconductivity (HTS). This revolutionary technology has the potential to transform entire industries, including clean energy, cancer treatment, and defense technologies. HTS materials can help address some of the world's most...
Go to contribution page -
Josh Hilderbrand03/07/2025, 16:35
The magnets used in Magnetic Resonance Imaging (MRI) are the largest commercial application of superconducting technology. These magnets predominantly employ niobium-titanium technology, traditionally maintained at cryogenic temperatures by immersion in a liquid helium bath. Recent advancements in sealed and cryogen-free MRI magnet technologies reduce helium dependence, marking a step...
Go to contribution page -
Kal Fishman (Empyrean Medical Systems)03/07/2025, 16:40
Eradicating cancer and improving cancer treatment have been ongoing challenges for decades, resulting in the loss of millions of lives. However, the development of innovative cancer therapies enabled by high-temperature superconducting (HTS) materials offers renewed hope for potentially eradicating this devastating disease within our lifetime.
Current radiation oncology methods require...
Go to contribution page -
Sastry Pamidi (CAPS/FAMU-FSU College of Engineering)03/07/2025, 16:45
Superconducting magnets are the critical differentiating technology of superconducting rotating machines. High Temperature Superconducting (HTS) rotating machines will revolutionize aero-propulsion aviation, ship propulsion, power generation, industrial motors, and many other applications by providing unmatched efficiency and power density. This panel discussion will focus on the latest...
Go to contribution page -
03/07/2025, 16:50
-
John Burgoyne (Oxford Instruments NanoScience Ltd)03/07/2025, 17:30
-
Sergey Lee (Faraday Factory Japan LLC)03/07/2025, 17:35
-
Philippe Masson (Advanced Magnet Lab)03/07/2025, 17:40
-
Dr Joseph Minervini (Novum Industria LLC)03/07/2025, 17:45
-
03/07/2025, 17:50
-
Philip Mallon (Lawrence Berkeley National Laboratory)04/07/2025, 08:00
The test facility dipole magnet (TFD) is being developed at the Lawrence Berkeley National Laboratory (LBNL). This is a large-bore Nb$_3$Sn dipole magnet to be at the center of the High Field Vertical Magnet Test Facility (HFVMTF), funded by the U.S. Department of Energy (DOE) Office of Science (SC), and designed to test advanced cables and inserts in a high transverse background field and in...
Go to contribution page -
Dr Arend Nijhuis (University of Twente)04/07/2025, 08:00Contributed Oral
High magnetic fields of up to 20 T in tokamak-type fusion devices require High-Temperature Superconductors (HTS) and 50 kA/20 T class, full-size ReBCO Cable In Conduit Conductors (CICC). Conductors based on Conductor On Round Core (CORC®/HFRC) cables, are among others, proposed for the Central Solenoids of the European DEMO and the Chinese BEST fusion reactors. The large Lorentz forces...
Go to contribution page -
Min Zhang (University of Strathclyde)04/07/2025, 08:00
This presentation summarizes the development and testing progress of a 100 kW superconducting propulsion unit designed for zero-emission aviation. The findings draw from two major UK-funded projects, in collaboration with Airbus Upnext. The propulsion unit features an axial-flux fully superconducting motor and an integrated cryogenic drive system. The motor, comprising two HTS stators and one...
Go to contribution page -
Arnaud Pascal Foussat (CERN)04/07/2025, 08:15
The Falcon D (Future Accelerator post- LHC Cos-theta Optimised Nb3Sn dipole) dipole is part of the High Field Magnet (HFM) program. CERN in collaboration with the Italian Institute for Nuclear Physics (INFN Genova and LASA Milano), is developing the design of cos theta dipole magnet beyond 11T based on proven Nb3Sn technology in the MQXF quadrupoles used in the high-luminosity upgrade of the...
Go to contribution page -
Yu Suetomi (National High Magnetic Field Laboratory)04/07/2025, 08:15Contributed Oral
Consideration of screening current induced stress (SCIS) is crucial for management of stress and strain in the design of ultra-high field REBCO magnets. We developed a numerical simulation tool that utilizes COMSOL and studied the effects of including reinforcement in REBCO coils such as co-winding or over-banding steel tapes [1]. The model employs the penalty method as a boundary condition...
Go to contribution page -
Andrea Gagno (INFN)04/07/2025, 08:30
The Future Circular Collider-hadron-hadron (FCC-hh) project is envisioned as the successor to the Large Hadron Collider (LHC) at CERN (European Organization for Nuclear Research). The proposed particle accelerator, with a center-of-mass energy up to 100 TeV, will be housed in a tunnel approximately 100 km in circumference, representing a major leap forward in the exploration of fundamental...
Go to contribution page -
Ye Yang04/07/2025, 08:30Contributed Oral
Conductor on Round Core (CORC®) cables, consisting of REBCO coated tapes helically wound around a metal former, are a promising conductor option for future high-field dipole magnets in particle accelerators. Crucial to the success of this application is the conductor resilience to mechanical loads. The promising electrical performance of the CORC® wires may be compromised by damage and...
Go to contribution page -
Jacques Noudem (Université de Caen Normandie)04/07/2025, 08:30
Investigations carried out up to now on superconducting Maglev trains have always planned to use YBCO or REBCO oxides as superconducting materials [1, 2]. While MgB2 enters more and more applications [3], bulk MgB2 has not yet been seriously considered for Maglev projects. Its main drawback is its Tc that is low as compared to that of HTS oxides. As a consequence, the cooling costs are assumed...
Go to contribution page -
Mattia Elisei (INFN-LASA and Sapienza University of Rome)04/07/2025, 08:45
The High Field Magnet (HFM) R&D program at CERN aims to find technological solutions for the construction of accelerator magnets to be installed in future post-LHC colliders. The Italian Institute of Nuclear Physics (INFN) and CERN are collaborating to design and fabricate a new four-layer cos-theta dipole able to achieve a bore field of 14 T with at least 20% of margin on the loadline. The...
Go to contribution page -
Gianluca Vernassa (CERN & Ecole des Mines de Saint-Etienne)04/07/2025, 08:45Contributed Oral
Rare-earth barium copper oxide (REBCO) coated conductors (CCs), the leading candidates for the construction of ultra-high field magnets, are produced in the form of thin tapes, with a laminar structure consisting of different layers of functional materials. The feeble adhesion strength between layers has been long remarked, and represents a major concern for magnet design, as it imposes hard...
Go to contribution page -
Leonardo Civale (Department of Physics, University of Connecticut, Storrs, CT)04/07/2025, 08:45
With current propulsion capabilities, the trip to Mars takes around 6 to 8 months during which astronauts, plants, seeds, and electronics are exposed to energetic cosmic rays and solar flares that exceed acceptable radiation limits. This presents a critical challenge for future human interplanetary missions. In this work, we present a conceptual design for an innovative dual-purpose system...
Go to contribution page -
Dr Etienne Rochepault (Université Paris-Saclay (FR))04/07/2025, 09:00
CEA Paris-Saclay is developing, in collaboration with CERN, the R2D2 (Research Racetrack Dipole Demonstrator) magnet. The main goal is to demonstrate the feasibility of key technologies for future high field 16 T $Nb_3Sn$ magnets for particle colliders. On one hand, the coil manufacturing has been finalized and four coils have been produced. First, two practice coils have been manufactured,...
Go to contribution page -
Célia Lucas Esparseil (Université de Genève)04/07/2025, 09:00Contributed Oral
This study investigates the delamination behavior of REBCO coated conductors (CCs) using the electromagnetic delamination strength (EDS) method. Unlike the mechanical delamination strength (MDS), which relates stress to structural failure, EDS focuses on the irreversible threshold at which critical current degradation occurs. This distinction is particularly important for high-field magnet...
Go to contribution page -
Jintao Hu04/07/2025, 09:00
This paper introduces the design and experimental demonstration of a novel insulated two-in-hand REBCO magnet for high-field applications. The inclusion of insulation ensures that the current follows the designed path, resulting in improved predictability and operational stability. Insulated magnets are particularly advantageous for applications requiring integrated quench detection and...
Go to contribution page -
Dr Peng Song (Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.)04/07/2025, 09:15Contributed Oral
The delamination problem of the epoxy-impregnated REBCO coils was always an obstacle for REBCO magnet application. To avoid the delamination, recently a novel method that coating release agent layers on the REBCO tapes was proposed, and it has been preliminarily verified by REBCO coils impregnated room-temperature curing epoxy (Stycast 2850). For thermosetting epoxy, like IR3 (supplied by...
Go to contribution page -
Peng Song (Tsinghua University)04/07/2025, 09:30
No-insulation (NI) coils are known for their high thermal stability and self-protecting features due to turn-to-turn contacts. Parallel co-winding is a promising method to reduce the charging delay of NI coils while maintaining thermal stability. This technique shows significant potential for applications in fusion and other large-scale or high-field magnets. In parallel co-wound NI coils, the...
Go to contribution page -
Jung Tae Lee (Seoul National University, Republic of Korea)04/07/2025, 09:30
The estimation of critical current ($I_c$) and the index value for single-tape wound coils and magnets is relatively straightforward. However, for multi-tape co-wound coils, the process becomes complex due to various factors influencing current distribution within the coil. This study conducts a numerical analysis to explore these factors and their impact on the $I_c$ and index value of...
Go to contribution page -
Kibum Choi04/07/2025, 09:30
No-insulation (NI) high temperature superconductor (HTS) coils are characterized by their turn-to-turn contact resistivity, leading to circuit-based models composed primarily of resistors and inductors. In a simplified lumped circuit representation, NI HTS coils can be modeled as variations of RL circuits, yielding voltage responses governed by a single-valued time constant. However,...
Go to contribution page -
Xinxing Qian (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences), Zhaofei Jiang (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences)04/07/2025, 09:30
No-insulation REBCO (NI-REBCO) coils, with self-protecting capabilities during quench, have attracted significant interest and shown considerable potential for high-field applications. As research advances, it has become increasingly evident that uneven stress/strain induced by screening currents is a critical factor affecting the performance of NI-REBCO coils. Therefore, reducing...
Go to contribution page -
Hiroyasu Kobayashi (Chiba University)04/07/2025, 09:30
No-Insulation (NI) coil utilizing HTS tape conductor has become a promising option for high-field magnets, capable of delivering both excellent thermal stability and high current density. NI coil can reduce heat generation due to a current behavior that bypasses the defect when a local hot-spot is formed in HTS tape conductor. In the high-field magnet application, a coil structure with large...
Go to contribution page -
Dr Tianli Dai (Institute of Plasma Physics, Chinese Academy of Sciences)04/07/2025, 09:30
No-insulated high temperature superconducting (HTS) coils are widely favored for high engineering current density and self-protection properties. Radial stress is an important parameter for HTS coils, which is mainly the superposition of winding tension, electromagnetic load and thermal stress. Radial stress is related to the magnet transient behavior and the self-protection characteristics of...
Go to contribution page -
Daniel Louis Arthur Biek (EPFL, Swiss Plasma Center)04/07/2025, 09:30
Due to the increasing interest in nuclear fusion, basic plasma experiments/small scale devices are good to illustrate plasma physics properties like magnetic surfaces and/or the importance of it. The construction of a table-top stellarator experiment, referred to as Polaris, is envisaged for the Swiss Plasma Center of EPFL. Polaris (major radius ~40cm and minor radius ~15cm) consists...
Go to contribution page -
J.H. Wan04/07/2025, 09:30
Rare-earth-based barium copper oxide (REBCO) coated conductors have shown remarkable high in-field performance in current transport and tensile strength, and their application as a layer-wound insert magnet during the construction of a high-field superconducting magnet is reasonably expected. However, the inhomogeneous stress distribution induced by the screening current, coupled with...
Go to contribution page -
Victor Rolando Jara Gonzalez (Programa de Maestria y Doctorado en Ingenieria, Universidad Nacional Autonoma de Mexico, Mexico)04/07/2025, 09:30
The increasing use of Rare-earth barium copper oxide (REBCO) bulks in electromechanical applications, particularly for acting as “pseudo” permanent magnets, is driving the development of more sophisticated numerical models. The focus has been on modeling electromagnetic phenomena with greater accuracy and efficiency, taking into account the non-linear and heterogeneous characteristics of high...
Go to contribution page -
Ms Ingyeong Park (Department of Electronic Engineering, Sunmoon University), Prof. Sang Heon Lee (Department of Electronic Engineering, Sunmoon University)04/07/2025, 09:30
In the melt heat treatment process for growing YBaCuO superconducting single crystals, increasing the distribution density of flux-pinning particles, Y2BaCuO5, is critical. The flux-pinning effect occurs at the interface between Y2BaCuO5 and YBa2Cu3O7, so a Y1.6Ba2.3Cu3.3O7-y bulk was fabricated to enhance Y2BaCuO5 concentration and improve oxygen diffusion during growth. However, the high...
Go to contribution page -
Rui Li (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)04/07/2025, 09:30
High-temperature superconducting (HTS) bulks can exhibit superconducting properties at liquid nitrogen temperature. As a type-II superconductor, these materials demonstrate flux pinning effects, wherein magnetic flux is pinned inside the superconductor when the external magnetic field exceeds its lower critical field. This phenomenon imparts permanent magnet characteristics to the material,...
Go to contribution page -
Kazuya Yokoyama (Ashikaga University)04/07/2025, 09:30
A superconducting bulk magnet can generate a strong magnetic field in a compact and lightweight device. Among magnetization methods for bulk magnets, pulsed-field magnetization (PFM) is effective for industrial applications because a bulk can be excited on-site in a short time. In terms of the generated magnetic field, it is reported that almost 100% of the sample's field trapping performance...
Go to contribution page -
Rafael de Souza (Fluminense Federal University)04/07/2025, 09:30
Magnetic Resonance Imaging (MRI) is a technique that generates high-resolution volumetric images of the body using a strong magnetic flux density. The image quality directly depends on the magnetic field homogeneity. Commercial superconducting magnets have a magnetic field homogeneity below two parts per million (ppm) and use Nb-Ti magnets. However, they need to be cooled at 4 K. It is costly...
Go to contribution page -
Zhenghang Wang04/07/2025, 09:30
3.0T Head-Only Superconducting magnetic resonance imaging (MRI) is under developed at the Wuhan National High Magnetic Field Center (WHMFC). Gradient coils, which generate linear gradient magnetic fields orthogonal to each other along the X, Y, and Z directions, are critical components of MRI systems. However, existing asymmetric gradient coil designs often encounter challenges, including...
Go to contribution page -
Dr Yaohui Wang (Division of Superconducting Magnet Science and Technology, Institute of Electrical Engineering, Chinese Academy of Sciences; School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences)04/07/2025, 09:30
The conventional iron matrix shimming method is sensitive to positional variations, which significantly impacts the magnetic field homogeneity of small-aperture 7T/54mm cryogen-free MRI superconducting magnets. This study aims to develop a robust, adjustable shimming method to improve magnetic field uniformity and precisely cancel low-order harmonics in these sensitive systems. A set of...
Go to contribution page -
Yaohui Wang04/07/2025, 09:30
The pursuit of ultrahigh magnetic fields is a key research direction in MRI, offering high signal-to-noise ratio (SNR), high resolution, and advanced imaging methodologies. However, ultrahigh-field MRI systems, such as 7T human MRI, are extremely costly, often around 10 million US dollars, making them unaffordable for many researchers. Therefore, there is a high demand for developing...
Go to contribution page -
Mr João Henrique Ramos Silva (Brazilian Center for Research in Energy and Materials)04/07/2025, 09:30
The Brazilian Center for Research in Energy and Materials (CNPEM) has built a medium field Magnetic Resonance Image (MRI) prototype as part of an overall effort on the in-house development of fundamental MRI technology know-how. The system is comprised of a permanent-magnet-based dipole, a set of planar coils for gradient field generation and a radiofrequency system with a...
Go to contribution page -
Dr Dongkeun Park (Massachusetts Institute of Technology), Jintao Hu04/07/2025, 09:30
In this paper, we present the design and test results of a low-AC-loss Nb3Sn model coil developed to validate key enabling technologies for a fast-switching-field magnetic resonance imaging (MRI) magnet concept that can change the magnetic field very quickly in time, within 1 second, between significantly different field strengths: a high field (3 T) for relaxometry and prepolarization and a...
Go to contribution page -
Chao Zhou (Institute of Plasma Physics, Chinese Academy of Sciences)04/07/2025, 09:30
Abstract：High field magnetic resonance imaging (HF-MRI) systems can achieve higher image resolution and sensitivity, resulting in better image quality and more biological information, which has significant value in life science and clinical medicine applications. The key to high field magnetic resonance imaging systems is the high homogeneous superconducting magnets, and active homogenization...
Go to contribution page -
Dr Anbo Wu (GE HealthCare Technology and Innovation Center)04/07/2025, 09:30Invited Poster
A low-cryogen compact 7T MRI system(C7T) dedicated for brain imaging has been developed at the GE HealthCare Technology and Innovation Center. The C7T magnet utilizes a fully sealed helium cooling system. Only 12 liters of liquid helium are condensed at 4.2 K from high pressure gaseous helium charged at room temperature. The C7T magnet is designed for a B0-field homogeneity <1.0 ppm in a 26-cm...
Go to contribution page -
Dr Dongkeun Park (Massachusetts Institute of Technology)04/07/2025, 09:30
In this paper, we present the finalized design, construction, and test results of a cryogen-free, iron-shielded 23.5-T/28-mm room-temperature bore REBCO magnet, developed for use in benchtop 1-GHz microcoil NMR spectroscopy. This benchtop magnet is composed entirely of REBCO conductors and operates at ~10 K in a conduction-cooled cryostat, featuring an external iron cylinder outside the vacuum...
Go to contribution page -
Minchul Ahn (Kunsan National University)04/07/2025, 09:30
Accurate magnetic field correction is essential in MR applications to achieve high field homogeneity and reduce manufacturing complexities. This study proposes an adaptive shim design method that leverages recursive linear programming for efficient optimization of shim configurations. Conventional nonlinear optimization approaches, such as Sequential Quadratic Programming (SQP), often result...
Go to contribution page -
Li Tong (High Magnetic Field Laboratory, Chinese Academy of Sciences)04/07/2025, 09:30
The Halbach magnets are assembled from multiple magnetic pole modules according to certain rules. Due to its small size, it can be made into desktop magnetic resonance equipment and have wide applications in food composition testing and chemical composition detection areas. Because of the use of permanent magnetic materials and assembly processes, the magnetic field uniformity of Halbach is...
Go to contribution page -
Mr Shuai Hu (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences), Huajun Liu (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences)04/07/2025, 09:30
Building upon the successful development of 26.86 T @ 30 mm and 16.6 T @ 100 mm fully REBCO high temperature superconducting (HTS) magnets, we have initiated the research and development of an 800 MHz NMR magnet with a 54 mm room-temperature bore. High-field HTS magnets face significant challenges during operation, such as pronounced screening current effects, which lead to poor magnetic field...
Go to contribution page -
Prof. Zili Zhang (Institute of Electrical Engineering, Chinese Academy of Sciences)04/07/2025, 09:30
Extremely high field NMR magnets have received much attention by improved resolution and higher sensitivity. However, one of the main reasons limiting its development is the magnetic field inhomogeneities generated by high-temperature superconducting (HTS) magnets cannot be compensated by conventional superconducting and room temperature shim coils. The design, fabrication, and testing results...
Go to contribution page -
Xunhuang Jiang04/07/2025, 09:30
Imaging quality is a critical metric for evaluating the performance of magnetic resonance systems, heavily influenced by the strength and homogeneity of the main magnetic field. While a high degree of homogeneity can theoretically be achieved during the design phase of the main magnet, unavoidable losses in homogeneity occur during manufacturing and assembly processes. The classical target...
Go to contribution page -
Dr Miyeon Yoon (Tech University of Korea)04/07/2025, 09:30
We have been conducting the basic design, fabrication, and testing of a joint-less high-temperature superconducting (HTS) magnet operating in persistent current mode using second-generation HTS conductors. The joint-less winding method is typically used to produce double pancake coils, but for magnet applications, multiple coils must be stacked. However, the inherent characteristics of the...
Go to contribution page -
Haotian Miao (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology)04/07/2025, 09:30
The extremely high magnetic fields offer significant advantages in improving imaging quality and analyzing the fine structures of materials. However, these benefits critically depend on achieving high levels of B0 magnetic field homogeneity. This necessitates the development of advanced shimming technologies, which can be effectively realized using superconducting shim coils. This paper...
Go to contribution page -
Dr Darko Bracanovic (Cryogenic Limited)04/07/2025, 09:30
A 9.4 T cryogen-free system developed by Cryogenic Limited has been used for the high resolution solid-state magic angle spinning (MAS) and liquid-state NMR experiments. The temporal magnetic field distortion due to the cold head operation was 2 Hz peak-to-peak on the resonance frequency 400 MHz [1]. This distortion occurred at the frequency of 1.7 Hz in our experimental setup.
In...
Go to contribution page -
Anis Ben Yahia (Brookhaven National Laboratory)04/07/2025, 09:30
The Electron-Ion Collider (EIC), hosted by Brookhaven National Laboratory, is designed to deliver a peak luminosity of 10^34 cm−2 s−1. The interaction region (IR) of the EIC imposes several constraints in terms of field quality, aperture, and spatial layout, which necessitates the development of several unique superconducting serpentine direct wind magnets. These magnets are constructed using...
Go to contribution page -
Febin Kurian04/07/2025, 09:30
The Electron-Ion Collider (EIC) plans to have a number of unique superconducting magnets in its interaction region (IR) to satisfy challenging requirements. As a test bed for addressing several R&D challenges in the development of Rutherford cable magnets with very large apertures, B1pF is currently being built as a full-length prototype at the Superconducting Magnet Division at Brookhaven...
Go to contribution page -
Dr Ramesh Gupta (Brookhaven National Laboratory)04/07/2025, 09:30
The Optimum Integral Design (OID) with Direct Wind (DW) technology offers a unique value engineering opportunity for the Interaction Region (IR) dipole B1ApF of the Electron Ion Collider (EIC). The current design of the B1ApF magnet is based on the conventional cosine theta configuration using Rutherford cable. As compared to most accelerator magnets, B1ApF has a small coil length (1500 mm) to...
Go to contribution page -
Peng Xu (BNL)04/07/2025, 09:30
The Electron Ion Collider (EIC) will collide high energy and highly polarized hadron and electron beams with luminosities up to 10^34/cm^2/s. The magnet designs at the interaction region (IR) are challenging due to the close proximity of the hadron and electron beams. Several serpentine types of superconducting magnets have been designed due to the space restrictions at the IR. To validate the...
Go to contribution page -
Robin Penavaire (CEA/IRFU)04/07/2025, 09:30
The Electron-Ion Collider (EIC) requires eight solenoid magnets to polarize the spin of the electron beam. These magnets, called SPIN ROTATORS, are categorized as four LONG (6.2 m) and four SHORT (2.5 m). They operate at a peak magnetic field of about 8.5 T with a 100 mm bore diameter. The integrated magnetic field along the axis is the figure of merit for these magnets, being respectively...
Go to contribution page -
Michael Anerella04/07/2025, 09:30
Brookhaven National Laboratory (BNL) was chosen to host the international Electron-Ion Collider (EIC), which will collide high energy and highly polarized hadron and electron beams with a center of mass energy up to 140 GeV. The Interaction Region (IR) requires several large aperture, relatively high field superconducting dipole and quadrupole magnets, some of which are very closely spaced....
Go to contribution page -
Danlu Zhang04/07/2025, 09:30
The Spectrometer Section (SPS) is a critical part of the ongoing High Rigidity Spectrometer (HRS) project at FRIB, Michigan State University. The HRS can accept high rigidity beam up to 8 Tm from FRIB and will significantly enhance the scientific output. One of the key components in the SPS is a large-scale, rectangular-shaped iron-dominated superconducting dipole magnet DS1. The overall...
Go to contribution page -
Nicholaos Tsoupas04/07/2025, 09:30
The Electron Ion Collider (EIC) is under design to be built at Brookhaven National Laboratory (BNL) to collide hadron bunches with the electron bunches. The hadron bunches will be injected and accelerated in the Hadron Storage Ring (HSR) and will be brought in collisions with the electron bunches of the Electron Storage Ring (ESR). To minimize the kicker strength of the fast strip line...
Go to contribution page -
Dr Feipeng Ning (Institute of High Energy Physics, China)04/07/2025, 09:30
The Circle Electron Positron Collider(CEPC) is a large international scientific project initiated by and to be hosted in China. It will produce large samples of Higgs, W and Z bosons to allow precision measurements of their properties as well as searches for BSM physics.The magnet system uses a solenoid that is supported by an aluminum alloy cylinder and cooled indirectly by liquid helium to...
Go to contribution page -
Sara Notaro04/07/2025, 09:30
The Electron Ion Collider (EIC) currently in development at Brookhaven National Laboratory (BNL) will collide high energy and highly polarized hadron and electron beams with luminosities up to 10^34 cm^-2 s^-1. Part of the EIC is the Electron Storage Ring (ESR), which will store and maintain the electron polarity of the EIC electron beam for collision energies up to 18 GeV. There are two main...
Go to contribution page -
Racquel Lovelace04/07/2025, 09:30
The Electron-Ion Collider (EIC) at Brookhaven National Laboratory (BNL) is designed to deliver a peak luminosity of 10^34 cm^-2 sec^-1. An electron storage ring (ESR) will be installed in the existing Relativistic Heavy Ion Collider (RHIC) tunnel and will store polarized electron beams from 5 to 18 GeV. The ESR will have 750 dipole magnets with varying field requirements, including 576...
Go to contribution page -
Louis Zani04/07/2025, 09:30
The upgrade to JT-60SA tokamak (R=3m, a=1.2m) was conducted within a Europe-Japan collaboration agreement featuring the implementation of superconducting magnets. In 2021, an arcing issue on EF1 coil led to an overall insulation reinforcement against high voltage on the magnet system. Because the Central Solenoid (CS) is less accessible for repair it deserves specific attention related to its...
Go to contribution page -
Mr Matthew Leoschke (The Pennsylvania State University)04/07/2025, 09:30
Optical fiber sensors are gaining attention as a promising technology for magnet monitoring and quench detection in fusion reactors. These sensors enable precise measurement of strain and temperature profiles within superconducting magnets and their integration into superconducting wires and cables has been demonstrated as viable. However, when embedded into fusion magnet systems, these...
Go to contribution page -
Jiabin Yang (UK Atomic Energy Authority)04/07/2025, 09:30
The STEP (Spherical Tokamak for Energy Production) program in UKAEA aims to develop a large-scale high-temperature superconducting (HTS) toroidal field (TF) model coil over four years, with plans to scale it up to a full-size TF coil. The TF model coil (TFMC), with approximate dimensions of 1m × 2m and a terminal current reaching up to 100kA, serves as part of the risk retirement program for...
Go to contribution page -
Lorenzo Giannini (EUROfusion)04/07/2025, 09:30
A European Research, Development & Demonstration (RD&D) program is being proposed by EUROfusion and partners to address key challenges and demonstrate the feasibility of safely quench-protecting large-scale High-Temperature Superconducting (HTS) magnets. This initiative is designed to pave the way for the development and deployment of HTS magnets in large tokamaks. The program is divided in...
Go to contribution page -
Dr Shailendra Singh Chouhan (United Kingdom Industrial Fusion Solutions Ltd.)04/07/2025, 09:30
High-temperature superconductors (HTS) are increasingly being used to build
Go to contribution page
electromagnets to generate strong magnetic fields for a wide range of applications,
from medical devices and electric motors to future fusion reactors. These
superconductors are subject to quenching, a phenomenon that manifests itself as a
rapid rise in the temperature of the HTS material, leading to a loss of... -
Mr Pengcheng Huang (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences)04/07/2025, 09:30
The Quantum Materials Resonant Scattering Experimental Station (QMRSES) is a key component of the Hefei Advanced Light Facility (HALF) to investigate the quantum materials through the Resonant Elastic X-ray Scattering (REXS). The station assists researchers in investigating the electronic, spin, and orbital properties. The cryostat with the system is designed to provide various magnetic fields...
Go to contribution page -
Shenglong Wang04/07/2025, 09:30
High intensity cyclotrons play a significant role in radionuclide production. Our institute has formulated a plan to design and build a 300 MeV proton cyclotron and has already initiated preliminary research. Among all the subsystems, the main magnet stands out as one of the most critical and challenging components.When compared with low beam current cyclotrons, the main magnet system of a...
Go to contribution page -
Zongtai Xie (SPIC Nucreation Technology Company LTD., State Power Investment Corporation (SPIC))04/07/2025, 09:30
State Power Investment Corporation (SPIC) is leading a project that uses cyclotron for proton irradiate power chips. Compared to electrostatic accelerator, cyclotron have the advantage of lower cost and higher beam intensity. However, a disadvantage of cyclotron is that the extracted beam has relatively large energy dispersion. For horizontally placed power chips, the beam must be injected...
Go to contribution page -
Benjamin Szabo (FNAL)04/07/2025, 09:30
The Proton Improvement Plan-II (PIP-II) is a vital upgrade to Fermilab's accelerator complex. The upgrade is designed to power the world’s most intense high-energy neutrino beam in future experiments. The magnet pulse repetition rate of the PIP-II injection system is being upgraded from 15 Hz to 20 Hz and requires a roughly 30% increase in the magnetic field of the new Orbital Bump (ORBUMP)...
Go to contribution page -
Harshita Singh04/07/2025, 09:30
Normal conducting quadrupoles have been used to focus charged particle beams in synchrotrons, beam transfer lines, medical linacs, etc. for a long time. Optimization techniques based on analytical expressions combined with the use of a numerical field analysis tool exist in the literature for the design of an optimal pole tip shape. However, the initial shape and dimensions of the remaining...
Go to contribution page -
Bolei Jia (Shanghai Advanced Research Institute, Chinese Academy of Sciences)04/07/2025, 09:30
An analytical magnet has been designed for the SV projiect at the Shanghai Advanced Research Institute, Chinese Academy of Sciences. According to the design parameters proposed by the Physics Department, we have confirmed the dimensions of the magnet and optimized the field quality. The simulation of the electronmagnetic field has been finished in OPERA 3D. In the paper, we give the...
Go to contribution page -
Dr Francoise Rondeaux (CEA Paris-Saclay)04/07/2025, 09:30
The Research Racetrack Dipole Demonstrator (R2D2) is a short model magnet developed by CEA Paris-Saclay, in collaboration with CERN. The main goal is to demonstrate the feasibility of key technologies for future high field 16 T Nb3Sn magnets for particle colliders. Using a block-coil design, two different cable grades are wound in the same coil layer, in order to maximize the current density,...
Go to contribution page -
Igor Novitski04/07/2025, 09:30
A 123 mm aperture Nb3Sn cos-theta (CT) dipole coil with stress management (SM) was developed at Fermilab to demonstrate and test the SM concept. Additive Manufacturing technology was used to produce the coil mandrel. Several changes were made to the SMCT coil design and technology based on the analysis of post-production and two cold tests of the first SMCT coil. This article describes the...
Go to contribution page -
Quentin Nouailhetas (Tokamak Energy)04/07/2025, 09:30
As the principal components and conductors of the new generation of very high field superconducting magnets, High Temperature Superconducting Tapes (HTS tapes) are getting a particular attention on their selection, characterisation and uses.
Go to contribution page
In this context, Tokamak Energy has multiple specification covering the needed performance, tolerance and characteristics of HTS tapes. The most... -
Nandana Menon04/07/2025, 09:30
REBCO conductors are emerging as a prominent choice among high-temperature superconductors due to their superior superconducting properties at high magnetic fields. However, depending on the fabrication route, there can be microstructural heterogeneities such as porosity, CuO precipitates, and a-axis grains. Such defects at a larger scale can disrupt current transport and limit the critical...
Go to contribution page -
Dr Hao Zhang (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)04/07/2025, 09:30
The development of new high-field superconducting magnets is significantly constrained by the limiting critical properties of superconducting coated conductors (CCs). A major challenge is that REBCO tapes have high critical current densities. It is essential to create micro-bridges on REBCO tapes to test the critical current at low temperatures and high fields. However, pulsed high magnetic...
Go to contribution page -
Mr Jeremy Levitan (National High Magnetic Field Laboratory, USA)04/07/2025, 09:30
NHMFL is designing a 40 T superconducting user magnet [1]. In this magnet, significant quantity of REBCO coated conductor will be used for the insert coils. Fully characterizing critical current (Ic) of REBCO tapes at temperatures of its operation (4.2 K) and during a potential magnet quench (> 4.2 K) is critical to the success of the project. Due to the strong anisotropy of REBCO coated...
Go to contribution page -
Daniele Turrioni04/07/2025, 09:30
By using TELENE® resin as superconducting magnet impregnation material, training and magnet retraining after a thermal cycle were nearly eliminated in Nb3Sn undulators and NbTi accelerator magnets. We herein perform a study on how effective TELENE is in preventing quenches also in HTS magnets, without damaging the superconductor. This study encompasses measurements of transport current,...
Go to contribution page -
Yijun Wang (Huazhong University of Science and Technology)04/07/2025, 09:30
A 5 T high-temperature superconducting (HTS) magnet utilizing conduction cooling with REBCO tape has been designed and constructed at the Wuhan National High Magnetic Field Center (WHMFC). The magnet comprises three double pancake (DP) coils, employing a no-insulation (NI) winding technique，and is designed to operate at a current of 260 A at 4 K. During magnet operation, the turn-to-turn...
Go to contribution page -
Qi Yuan (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)04/07/2025, 09:30
The critical properties of REBa2Cu3O7-x (REBCO, RE = Rare Earth) tapes are essential for applications in high-field magnets. Typically, the critical current (Ic) of REBCO tapes is measured under steady-state magnetic fields using direct current (DC). However, at low temperatures, the Ic of these tapes can reach 4 kA, posing significant...
Go to contribution page -
Megumi Hirota (Naval Ship M&UEP R.C.)04/07/2025, 09:30
Steel-hull ships generate a magnetic field making them vulnerable to weapons equipped with magnetic sensors. To mitigate this threat, navies use ship deperming treatments to reduce the ship’s magnetization. We design a flat seabed coil with a racetrack shape to deperm a ship that remains stationary above the coil for quick operation. The required magnetic field generated by the coil is...
Go to contribution page -
Dongsu Seo (Department of Electrical and Computer Engineering, Seoul National University, 08826, Korea)04/07/2025, 09:30
This research investigates the feasibility of high-temperature superconductor (HTS) magnets as pivotal components for superconducting magnetic energy storage (SMES) applications, with a focus on their integration into power grids. SMES systems store energy in the magnetic field of superconducting coils, and the large current-carrying capability of HTS has shown its potential for SMES...
Go to contribution page -
Mr Dohoon Kwon (KIMM)04/07/2025, 09:30
Adiabatic demagnetization refrigerator (ADR) is a cooling method that utilizes the cooling effect from the magnetic material under a changing magnetic field. Commonly, the field variation is generated by a superconducting magnet. If a 4 K cryocooler is implemented as a heat sink of the magnet, both low temperature superconductors (LTS) and high temperature superconductors (HTS) can be used for...
Go to contribution page -
Dr Xiaoxiang Li (Huazhong University of Science and Technology)04/07/2025, 09:30
Large aluminum alloy rings are vital components in wind turbine and high-speed train, serving as bearing rings, transition rings, and reinforcing structures. The structural stability and mechanical properties of these rings are critical to ensuring assembly precision and safety performance of these systems. However, the manufacturing process of large aluminum alloys rings inevitably introduce...
Go to contribution page -
Mr Chengxian Li (Naval University of Engineering)04/07/2025, 09:30
For long-distance acceleration applications such as electromagnetic catapults and high-speed maglev trains, usually, multiple short linear motors are joined together into longer linear motors as needed. In this paper, a new type high temperature superconducting-linear motor (HTS-LM) for long-distance acceleration applications is designed. The stator winding of the HTS-LM is a ring winding...
Go to contribution page -
22. Fri-Mo-Po.09-06: Dynamic characteristics of a fully HTS magnetic bearing under pulsed excitationDr Changqing Ye (Hohai University)04/07/2025, 09:30
The so-called fully superconducting magnetic bearing (SMB) is composed of a rotor of high temperature superconducting (HTS) bulk of YBaCuO and a stator wind wounded by HTS coated conductor tapes. The fully SMB has been developed a prototype and is in operation in Japan. The dynamics of fully SMB under long term operation is crucial to engineering applications, however, the experimental and...
Go to contribution page -
Ruimin Zhao04/07/2025, 09:30
The large current density of superconducting tape makes it have obvious advantages in improving the quality of power grid, reducing the transmission losses and reducing the floor space of electrical equipment. Large capacity superconducting shunt reactors have the advantages of small size, light weight, low noise and no fire risk. However, the AC loss of superconducting tapes is an important...
Go to contribution page -
Dr Changhyun Kim (Research Institute of the Medium & Small shipbuilding)04/07/2025, 09:30
The International Maritime Organization has set a 'Net Zero' target for the maritime industry to reduce greenhouse gas emissions to zero by 2050 in response to climate change. To achieve this goal, the shipbuilding industry is focusing on the design and research of cryogenic equipment for the transportation of liquid hydrogen and carbon capture in cryogenic states. Liquid hydrogen must be...
Go to contribution page -
Brett Parker (Brookhaven National Laboratory (US))04/07/2025, 11:15Contributed Oral
For the Electron Ion Collider (EIC) at BNL, the interaction region (IR) magnet closest to the EIC experiment on the forward (outgoing hadron and incoming electron) side, denoted B0PF-Q0EF, must satisfy many conflicting machine detector interface (MDI) requirements. First it must provide sufficient transverse field in a large warm bore to provide spectrometer functionality for outgoing...
Go to contribution page -
Dr Venkat Selvamanickam (University of Houston and AMPeers LLC)04/07/2025, 11:15Contributed Oral
REBCO conductors with high critical currents and high engineering current densities (Je) in magnetic fields of 20 T and above are needed for several applications such as particle accelerators and fusion reactors. We have demonstrated round, 2.5 mm diameter REBCO STAR® wires with a Je of about 600 A/mm^2 at 4.2 K, 30 T at a bend radius of just 15 mm, using high critical current REBCO tapes....
Go to contribution page -
544. Fri-Mo-Or6-01: First demonstration of the ESC quench protection concept on a common-coil magnetErik Schnaubelt (CERN)04/07/2025, 11:15Contributed Oral
A new quench protection technique, Energy Shift with Coupling (ESC), has recently been proposed, which is very promising for the protection of high-field magnets. The ESC system includes normal-conducting coils that are highly magnetically coupled to, but galvanically insulated from, the magnet coils. When the system is activated, rapid shift of energy from the magnet to the ESC coils is...
Go to contribution page -
Michael Anerella04/07/2025, 11:30Contributed Oral
Brookhaven National Laboratory (BNL) was chosen to host the international Electron-Ion Collider (EIC), which will collide high energy and highly polarized hadron and electron beams with a center of mass energy up to 140 GeV. The Interaction Region (IR) requires several large aperture, relatively high field superconducting dipole and quadrupole magnets, some of which are very closely spaced....
Go to contribution page -
Mr Jin Kwon04/07/2025, 11:30Contributed Oral
ReBCO tapes and cables are of great interest high field magnets because of their high current carrying capability, high Tc, and high magnetic field tolerance. The magnetization and AC loss properties of ReBCO tapes are well known, however, for cables, especially the helically wound counterparts some interesting aspects remain. It is well known that for ReBCO tape the losses are strongly...
Go to contribution page -
Andrea Zappatore04/07/2025, 11:30Contributed Oral
Conductors and magnets for fusion applications based on High Temperature Superconducting (HTS) materials are currently being designed and tested. Quench propagation in such conductors is an open issue due to the small normal zone propagation velocity when compared to Low Temperature Superconductors. This, in turn, makes the quench detection and the protection of HTS magnets more challenging....
Go to contribution page -
Mr Christopher Runyan (BNL)04/07/2025, 11:45Contributed Oral
Brookhaven National Laboratory (BNL) was chosen to host the international Electron-Ion Collider (EIC), which will collide high energy and highly polarized hadron and electron beams with a center of mass energy up to 140 GeV. The Interaction Region (IR) requires several large aperture, relatively high field superconducting dipole and quadrupole magnets, some of which are very closely spaced....
Go to contribution page -
Michinaka Sugano (KEK)04/07/2025, 11:45Contributed Oral
A Spiral Copper-plated Striated Coated-conductor (SCSC) cable is a round cable composed of striated REBCO coated-conductors (CCs) wrapped around a metal core wire. A REBCO film in each CC is divided into multifilaments by laser-striation, while Cu-plating surrounds the whole cross-section. Thanks to this structure, SCSC cables are promising for application to accelerator magnets since the...
Go to contribution page -
Davide Cuneo (Department of Electrical Engineering and Information Technology, University of Naples Federico II, Lawrence Berkeley National Laboratory (LBNL)04/07/2025, 11:45Contributed Oral
Proper detection and localization of quench events is essential to protect superconducting magnets for particle accelerators. Voltage taps are widely adopted for low-temperature superconductors (LTS), but they do not ensure reliable quench detection for high temperature superconducting (HTS) magnets. Indeed, the propagation velocity of the normal conducting zone is in the order of m s−1 for...
Go to contribution page -
Mithlesh Kumar04/07/2025, 12:00Contributed Oral
Brookhaven National Laboratory (BNL) has a unique Direct Wind (DW) technology which is used
Go to contribution page
to fabricate complex multi-functional superconducting magnets. Some of these magnets have been
integrated in currently operational accelerator complexes, such as, HERA, BEPC, JPARC, and
RHIC. These multi-layer magnets do not require custom production tooling necessary for cabled
magnets. The... -
04/07/2025, 12:00
-
Theodore Golfinopoulos (Massachusetts Institute of Technology)04/07/2025, 12:00Contributed Oral
A quench detection and fast discharge scheme has been deployed in the Superconducting Magnet Test Facility at MIT's Plasma Science and Fusion Center for use with high-temperature superconductor (HTS) devices. In particular, the system was developed to protect the SPARC Central Solenoid Model Coil (CSMC), an insulated HTS cable magnet constructed of 40 turns of PIT VIPER cable, as well as the...
Go to contribution page -
Tengming Shen04/07/2025, 12:15Contributed Oral
Bi-2212 conductors and accelerator magnets have been advanced in the USA through a collaboration between US national labs, university, and wire industry connected by the US Magnet Development Program (MDP) and by recently the U.S. Department of Energy’s Accelerator R&D and Production (ARDAP) Office. For example, a high engineering critical current density of 1000 A/mm2 has been demonstrated at...
Go to contribution page -
John Rogers04/07/2025, 12:15Contributed Oral
The design and simulation of a modified Rayleigh Line Pulse Forming Network (PFN) is presented for active quench protection of superconducting magnets. In this context, the PFN is a network of capacitors and inductors designed to deliver energy to quench heaters over a significantly longer period than a single capacitor or capacitor bank. The PFN is advantageous for protection of coils...
Go to contribution page -
Zequn Ke (Shanghai Jiao Tong University)04/07/2025, 14:00
For offshore superconducting wind generators, the complex operating conditions inside the machine — including thermal losses, stress, vibration, and transient load variations — pose significant challenges to the stable operation of the magnet, which can trigger coil quenching, potentially leading to the burnout of excitation coils and further generator fault condition.
Go to contribution page
This study is a... -
Mr Antoine Guinet (CEA Paris-Saclay)04/07/2025, 14:00
SupraFusion is a French research program aiming to boost HTS (High-Temperature Superconductors) technologies towards large-scale societal applications and particularly compact fusion machines. In the framework of this program, a large-scale HTS magnet demonstrator is presently under design. This large-scale magnet aims to demonstrate our capability to reach safely a peak field of about 20 T...
Go to contribution page -
Mithlesh Kumar04/07/2025, 14:00
Direct wind technology is capable of manufacturing complex multi-functional multi-layer coil
Go to contribution page
structures without the need for creating custom production tooling and fixturing for each new
project. The prestressing and field quality corrections is integrated in the manufacturing steps, and
the final coil does not require curing. The direct wind coil has several unique features. The... -
Mr Tianya Meng (Shanghai Advanced Research Institute, Chinese Academy of Sciences)04/07/2025, 14:00
The SSRF (Shanghai Synchrotron Radiation Facility) superconducting wiggler consists of three parts: a superconducting multipole magnet, a cryostat system and magnet power & control system. Superconducting multipole magnets can generate a strong magnetic field with a peak of 4.2T, and the generated magnetic field alternates positively and negatively along the direction of electron motion in the...
Go to contribution page -
Wonju Jung (Seoul National University)04/07/2025, 14:00
No-insulation (NI) rare-earth barium copper oxide (REBCO) magnets have demonstrated the potential to achieve high magnetic fields in compact spaces. Several REBCO magnets, whether combined with resistive outserts or operating standalone, have successfully reached fields over 20 T. However, many quench events have been reported during operation without clearly identified causes, leading to...
Go to contribution page -
Mr Zhiyong Yan (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, China)04/07/2025, 14:00
Tokamak controlled nuclear fusion emerges as a promising solution to the current global energy predicament. The solenoid coil, a pivotal component, plays a crucial role in confining plasma within the Tokamak device. Bi-2223/Ag high temperature superconducting tapes, with a high critical temperature and excellent machinability, are favored material for fabricating solenoid coils. Nevertheless,...
Go to contribution page -
Mr Liujiang Li (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, China)04/07/2025, 14:00
The Bi-2223/Ag high-temperature superconductor (HTS) tape has become one of the best candidate materials for high-performance superconducting magnets due to its high current-carrying capacity and excellent multi-filament stability. To achieve the capability of transporting thousands of amperes or even higher current levels, it is common to assemble multiple sub-cables constructed from...
Go to contribution page -
Dr Jian Rong (University of Houston)04/07/2025, 14:00
High-temperature superconductors (HTS) are being implemented in magnets and coils for fusion energy, aviation, wind generators, high-energy physics, and nuclear magnetic resonance. HTS coils face a critical challenge for use in these applications: their inherently slow quench propagation velocity complicates quench detection and protection, raising concerns about operational safety and...
Go to contribution page -
Hui Yu (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China)04/07/2025, 14:00
High-temperature superconductors (HTS), with their appreciable current density and superior thermal stability, exhibit significant potential for high-field applications. Compared to the normal zone propagation velocity (NZPV) of low-temperature superconductors (LTS), the NZPV in HTS is typically two to three orders of magnitude slower than that in LTS. The slow quench propagation...
Go to contribution page -
Ye Bai (Brookhaven National Lab)04/07/2025, 14:00
The Electron-Ion Collider (EIC), a new facility to be built in the United States at the U.S. Department of Energy’s Brookhaven National Laboratory in collaboration with Thomas Jefferson National Accelerator Facility. The EIC project will provide us answers to the mysteries of the origin of mass and building blocks of our universe.
Go to contribution page
There are many different types of superconducting magnets near... -
Thomas Nes04/07/2025, 14:00
The Swiss Plasma Center is proposing an upgrade to the EDIPO test facility (EDIPO 2), which will generate a 15 T background field within a 144×144 mm² aperture. This upgrade will enable variable-temperature, high-current testing of superconductor samples, enhancing the facility’s capabilities for advanced material research and development. This work presents an overview of the progress on the...
Go to contribution page -
Jinsub Kim (Korea Institute of Fusion Energy)04/07/2025, 14:00
Quench detection is critical to protect superconducting coils, especially in fusion superconducting magnets, due to enormous energy. A quench event can result in significant damage to fusion superconducting magnets. A High Voltage Signal Conditioner (HVSC) designed for quench voltage detection in the ITER superconducting magnet system has been developed collaboratively by the Korea Institute...
Go to contribution page -
Hajar Zgour04/07/2025, 14:00
SupraFusion is a French research program aiming to boost HTS (High-Temperature Superconductors) technologies towards large-scale societal applications and particularly compact fusion machines. In the framework of this program, a large-scale demonstrator magnet will be designed, manufactured and tested. This ambitious goal requires incremental steps, including the fabrication of smaller...
Go to contribution page -
Dr Clément Genot (CEA SACLAY)04/07/2025, 14:00
Suprafusion is a French exploratory program focusing on the development of high-temperature superconductors (HTS) to meet tomorrow's energy and societal challenges, using fusion needs as a vector for this research. In particular, the program aims to design, manufacture and test a large-scale HTS demonstrator magnet. To meet this goal, the program will follow a stepwise development plan with...
Go to contribution page -
Yutong Fu (Shanghai Jiao Tong University)04/07/2025, 14:00
Stacked tape superconducting cables based on second-generation high-temperature superconducting REBCO tapes exhibit high current density and excellent mechanical performance under cryogenic conditions, showing significant potential for applications in power transmission systems of space solar power station. This study investigates the quench behavior of HTS REBCO stacked tape cables under...
Go to contribution page -
Yutong Fu (Shanghai Jiao Tong University)04/07/2025, 14:00G01: Quench Detection and Protection, Stability of Conductors and CoilsPoster
The demand for high-quality silicon wafers with larger diameters has been heightened due to the fast growth of semiconductor integrated circuit industry. High temperature superconductor (HTS) magnet is capable of generating high static magnetic field at high operating temperature, which plays a crucial role in improving the quality of single silicon crystal during its growth process....
Go to contribution page -
Dr Wooseung Lee (Korea Basic Science Institute)04/07/2025, 14:00
No-Insulation (NI) or NI-like techniques (including metal insulation) have become essential for quench protection in high-temperature superconducting (HTS) coils. However, the turn-to-turn resistance inherent to NI techniques is an intrinsic property that cannot be fully controlled by coil designers, leading to several challenges. One critical issue is asymmetric quench behavior, where the...
Go to contribution page -
Dr Young Gun Park (JH Engineering, Co., Ltd.)04/07/2025, 14:00
The high-temperature superconducting current lead (HTSCL) plays a key role in supplying large currents to the ITER superconducting magnets. To measure the temperature of the HTSCL cooled by helium gas, PT-100 sensors are installed at both the warm end of the HTS section and the room-temperature terminal. These sensors are exposed to a high-voltage environment, depending on the type of ITER...
Go to contribution page -
Mr Ben Walsh (Commonwealth Fusion Systems)04/07/2025, 14:00
Commonwealth Fusion Systems (CFS) is developing and building a commercially relevant fusion energy machine that will produce more energy than is put into it. In this research, a reusable structural case for testing toroidal field (TF) magnets in the Coil Test Stand Cryostat prior to integration in the SPARC Tokamak has been developed and is currently employed in this critical evaluation of TF...
Go to contribution page -
Grayson Daly (Commonwealth Fusion Systems)04/07/2025, 14:00
The magnets of the SPARC tokamak as developed by Commonwealth Fusion Systems and the Massachusetts Institute of Technology include superconducting magnet termination cables that supply power to the winding pack. It is important to qualify these superconducting cables because they are epoxied into the cable magnets, making their removal extremely difficult, possibly scrapping a magnet. We...
Go to contribution page -
Milo Korman (Thea Energy, Inc)04/07/2025, 14:00
Thea Energy, Inc has designed, developed, and tested the “Canis” 3x3 array of high-temperature superconductor (HTS) planar coils, which will serve as a prototype for the development of the “Eos” planar coil stellarator. The Canis 3x3 magnet array support systems consist of a vacuum vessel, a radiation shield, first and second stage cooling systems, a magnet current distribution system, and a...
Go to contribution page -
Mr Jonathan Pavan (CEA, Aix-Marseille Université)04/07/2025, 14:00
Magnets remain the cornerstone technology in the development of high field fusion machines such as tokamaks. In this context, high-temperature superconductors (HTS) and the conductors derived from them are considered enabling technologies . HTS materials enable higher magnetic fields, paving the way for more compact and potentially higher-performance machines. However, the integration of these...
Go to contribution page -
Vlad Nikolic (FERMILAB)04/07/2025, 14:00
Fermi National Accelerator Laboratory (Fermilab) is currently constructing a new High Field Vertical Magnet Test Facility (HFVMTF) designed for testing High Temperature Superconducting (HTS) cables in high magnetic background field. This facility is expected to offer capabilities similar to those of EDIPO at PSI and FRESCA2 at CERN. The background magnetic field of 15 T will be generated by a...
Go to contribution page -
Dr Satoshi Ito (Dept. Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University)04/07/2025, 14:00
Bridge-type mechanical lap joint with indium insertion between REBCO tapes is planned to be utilized for joint-winding of high-temperature superconducting (HTS) helical coils in heliotron-type fusion reactors, such as FFHR-d1 [1]. Shear strength evaluation of single lap joints using tensile shear testing at 77 K, self-field has been conducted to discuss if the joints can keep their performance...
Go to contribution page -
Dr Hong Lei (Hefei Institutes of Physical Science, Chinese Academy of Sciences)04/07/2025, 14:00
In the design of DC busbar flexible connection in Power Supply System of CRAFT (Comprehensive Research Facility for Fusion Technology，China), water-cooled aluminum busbars interconnections are connected through aluminum flexible connectors to compensate for thermal expansion and Installation deviation. As the contact surface between the DC busbar and the flexible connection is very small, the...
Go to contribution page -
Kerim Uscuplic (MIT PSFC)04/07/2025, 14:00
High-quality joints are essential for building practical assemblies of fusion-scale magnets, integrating the magnets with bus and leads, and allowing modularity in magnet design. The essential figure of merit for the quality of the joint is its electrical resistance which should be as low as possible. Due to its low bulk resistivity and high ductility, indium is often used to cold-weld the...
Go to contribution page -
Jungbin Song (LNCMI-CNRS)04/07/2025, 14:00
We have been working on several projects to develop 32 T to 40 T class all superconducting magnet for end-users. For the first step, four REBCO tapes were estimated: 1) THEVA (TV); 2) Shanghai Superconductor Technology (SST); 3) Faraday Factory Japan (FFJ); and 4) Fujikura (FJK). From this estimation, we found that, except TV’s tape, the coils of all REBCO tapes were suddenly deformed at...
Go to contribution page -
Wenbin Ma (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences)04/07/2025, 14:00
20 Tesla is the nominal field limit for practical low temperature superconducting (LTS) magnet operating at 4.2 Kelvin. To achieve field above 20 Tesla, methods such as LTS magnet operating at sub-atmospheric pressure or LTS/HTS hybrid magnets, are normally adopted. Magnets working at sub-atmospheric pressure have high cryogen operating cost and high ice-blockage risk due to air leakage into...
Go to contribution page -
Dr Jiali Tang (High Magnetic Field laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences)04/07/2025, 14:00
Chinese High Magnetic Field Laboratory (CHMFL) is one of the five major labs of steady high magnetic field around the world. In Sep. 2024, its new built resistive magnet produced a steady field of 42.02 Tesla(T) with the power supply of 32.3 MW, which was the highest magnetic field of the resistive magnet in the world. In order to meet the operation requirements of the new magnet that the...
Go to contribution page -
Dr Frans Wijnen (HFML-FELIX, Nijmegen, The Netherlands)04/07/2025, 14:00
The High Field Magnet Laboratory of the Radboud University in Nijmegen has been building a 45 T hybrid magnet system over the last 10 years. The 12.3 T Nb3Sn CICC outsert coil has been wound and further processed by the National High Magnetic Field Laboratory in Tallahassee FL, USA. The coil is placed in a separate enclosure and will be operated at 4.5 K in an atmosphere of 1 bar of helium...
Go to contribution page -
Dr Wooseung Lee (Korea Basic Science Institute)04/07/2025, 14:00
High-temperature superconductors (HTS) are indispensable for producing magnetic fields exceeding 20 T, a subject that has attracted substantial research efforts in recent years. This study aims to develop a conduction-cooled all-HTS magnet capable of generating a 20 T magnetic field with a 50 mm room temperature bore. The magnet has been designed to operate at a maximum temperature of 20 K...
Go to contribution page -
Chao Zhou (Institute of Plasma Physics, Chinese Academy of Sciences)04/07/2025, 14:00
All-superconducting high-field magnets are in high demand across various scientific disciplines, including large-scale science devices, materials science, and biology. They play a crucial role in researching material properties, the origin of life, and disease prevention and treatment. These magnets offer significant advantages, such as compact size, low power consumption, flexibility, and...
Go to contribution page -
Dr Yawei Wang (Shanghai Jiao Tong University)04/07/2025, 14:00
This work presents a graded parallel-wound (GPW) coil technique for high temperature superconductor (HTS) magnet consisting of multiple pancake coils. The coil is wound by parallel-stacked HTS tapes, all the coils are connected in series, so that they have a same transport current. The key idea is to assign number of parallel-stacked tapes to pancake coils on different position of the magnet:...
Go to contribution page -
Hayato Nezuka (Toshiba Energy Systems & Solutions Corporation)04/07/2025, 14:00
The 33T Cryogen-Free Superconducting Magnet (33T-CSM) project is progressing at Tohoku University Institute for Materials Research. The 33T-CSM consists of a 19T REBCO coil (HTS) with a 68mm bore and a 14T Nb3Sn+NbTi Rutherford coil (LTS) with a 320mm bore. The 14T-LTS coil was completed in 2024 and its stand-alone test was successfully performed. The 19T-HTS coil design, which involves...
Go to contribution page -
Dr Kohki Takahashi (Tohoku University)04/07/2025, 14:00
A 25 T cryogen-free superconducting magnet (25T-CSM) has been installed at the High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University. It consists of low-temperature superconducting (LTS) outsert coils and a high-temperature superconducting (HTS) insert coil. The LTS coils are composed of three Nb3Sn sections (L1–L3) and three NbTi...
Go to contribution page -
Yufan Yan (Lawrence Berkeley National Laboratory)04/07/2025, 14:00
In the past few years, there is a growing interest in low-inductance high-field solenoid magnets for high-energy physics experiments including future muon colliders. Advanced Conductor Technologies (ACT) has recently developed CORC$^{®}$ wires wound from REBCO coated conductors with improved bending flexibility that allow for bending to a 20 mm radius and CORC$^{®}$ cables containing up to 96...
Go to contribution page -
Hangwei Ding (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences)04/07/2025, 14:00
Iron-based superconductor, owing to their exceptionally high upper critical fields and relatively simple fabrication processes, exhibit significant application potential for high-field superconducting magnets. This research designed a 5 T iron-based superconducting high-field insert coil operating in the 28 T background magnetic field. An optimization strategy was applied to refine the...
Go to contribution page -
Xinxing Qian (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences), Mr You Zhou (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences), Zhaofei Jiang (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences), Zhen Fang (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences)04/07/2025, 14:00
The central magnetic field of current all-superconducting hybrid magnets used in engineering applications is limited to below 40 T, primarily due to challenges such as screening-current-induced stress (SCIS)and high background magnetic field. SCIS significantly impacts the electromechanical performance of insert high-temperature superconducting (HTS) coils, particularly under high background...
Go to contribution page -
Zihao Shao (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)04/07/2025, 14:00
Electromagnetic forming (EMF), renowned for its high forming speed and strain rate advantages, has been extensively applied in industrial manufacturing, transportation, and other sectors. The principle of EMF involves generating an electromagnetic force on the workpiece using a pulsed magnet, driving the material to undergo plastic deformation. However, traditional solenoid-based forming...
Go to contribution page -
Dr James Moore04/07/2025, 14:00
We introduce a miniature pulsed magnetic field setup and a sample cryostat that is available at the European XFEL user facility for x-ray beamtimes. It is installed at one of the six beamlines called Materials, Imaging and Dynamics that uses femto-second x-ray pulses of extreme brilliance to study ultra-fast dynamics of magnetic materials and nano-structures [1].
Go to contribution page
We describe the experimental... -
Shuang Wang (Huazhong University of Science and Technology)04/07/2025, 14:00
The structure of the pulsed vector magnet has been optimally designed at the wuhan national high magnetic field center (WHMFC). The pulse vector magnet consists of a magnet that generates a magnetic field in the z-direction and a magnet that generates a magnetic field in the x-direction. the z-direction magnet is in the center hole of the x-direction magnet. The two magnets are held together...
Go to contribution page -
Wenzhe Li (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)04/07/2025, 14:00
Solenoidal high-field pulsed magnets typically employ layered reinforcement techniques to mitigate the substantial Lorentz forces acting on the conductors. The thickness of each reinforcement layer must be optimized through stress analysis to achieve a uniform and reasonable stress distribution. Although commercial finite element analysis (FEA) software can accurately calculate the stresses...
Go to contribution page -
Dr Shaozhe Zhang (Wuhan National High Magnetic Field Center,Huazhong University of Science and Technology)04/07/2025, 14:00
To improve visualization capability, simulation effort, and experiment efficiency for the Pulsed High Magnetic Field Facility (PHMFF) at Wuhan National High Magnetic Field Center (WHMFC), an intelligent operation and maintenance method based on digital twin technology is proposed. Reference to standard model, digital twin framework is first described including physical entity, virtual entity,...
Go to contribution page -
Scott Betts04/07/2025, 14:00
The 100T multi-shot (100TMS) and 60T controlled-waveform (60TCW) magnets are signature pulsed magnet systems at the National High Magnetic Field Laboratory (NHMFL) – Pulsed Field Facility (PFF) in Los Alamos. Both magnets are powered by a massive 1.4 GW generator to produce unique pulsed magnetic fields for user experiments. The 100TMS magnet can generate world-record pulsed magnetic fields up...
Go to contribution page -
Dr Hang Xu (Meiji University)04/07/2025, 14:00
The authors have designed a 1-MJ-class mobile superconducting magnetic energy storage (SMES) system. The SMES coil features a force-balanced helical coil (FBC) to reduce weight, as the FBC minimizes the mass required to support the induced electromagnetic forces.
In this study, the authors propose using 0.67-mm diameter MgB2 strands, manufactured by Hitachi, Ltd., for winding the FBC....
Go to contribution page -
Andrea Musso (RSE S.p.A, Milano)04/07/2025, 14:00
With the goal of generating net energy by 2040, fusion energy represents a cornerstone in the development of sustainable power generation technology, combining innovative approaches with advanced engineering solutions. Several programs aim to demonstrate the viability of fusion as a scalable energy source. However, the integration of remountable joints, the presence of large amounts of stored...
Go to contribution page -
Ryuichi Ueki (KEK)04/07/2025, 14:00
SuperKEKB accelerator is considering the introduction of superconducting sextupole magnets to improve collision performance. In addition to the main sextupole coil, three types of correction coils will be incorporated in this superconducting magnet. We are developing the correction coils using ultra-fine strand Nb3Al superconducting cables with strand diameters less than 50 um fabricated by...
Go to contribution page -
Jean-Francois Croteau (Lawrence Berkeley National Laboratory)04/07/2025, 14:00
Superconducting wires undergo large plastic deformation during manufacturing of Rutherford cables, especially at the cable edges. Previous studies on Restack Rod Process (RRP) Nb$_3$Sn wires have shown that the position of the strands in the cable and the orientation of the subelement stack, with respect to the main rolling direction during cabling, are affecting the amount of plastic...
Go to contribution page -
Dr Ruilong Wang (University of Science and Technology Beijing)04/07/2025, 14:00
With the innovation of accelerator magnet technology, the design of superconducting magnets is also changing and put forward high requirements on the performance of NbTi superconducting wire, which requires high critical current density and ultra low loss. A new type of superconducting wire with high critical current density, fine filament, ultra low loss NbTi/Cu5Ni/Cu has been developed in...
Go to contribution page -
Kailin Zhang (Western Superconducting Technologies Co.,Ltd.)04/07/2025, 14:00
Scientists have incorporated other metal as pinning centers into Niobium-titanium alloys in order to increase the critical current density of Niobium-titanium superconductors. This type of superconductor is known as an artificial pinning center niobium-titanium superconductor. Methods for fabricating artificially pinned superconductors include Rod-based, Gun-drill, Diffused-layer, Jelly-roll,...
Go to contribution page -
Pengfei Yan04/07/2025, 14:00
Superconducting switch wire is a key component in the superconducting magnet. If the superconducting magnet quenches during operation, the superconducting switch wire will disconnect automatically to protect the magnet from being damaged. Given the characteristic of high-resistance, the copper-nickel alloy is commonly the prime material for the matrix of switch wire. However, the high hardness...
Go to contribution page -
Mr Jianya Chen (Western Superconducting Technologies Co., Ltd.)04/07/2025, 14:00
Nb3Sn wires are wildly used in high-field (> 10 T) magnets and have great potential value in the next several decades. Internal-tin Nb3Sn strand has been developed by many methods for the future fusion reactor, high energy accelerator and so on. Increasing the critical current density of Nb3Sn wire, reducing the use amount of wire in magnets and reducing the price are important ways to promote...
Go to contribution page -
Heonhwan Kim (Kiswire Advanced Technology Co., Ltd.)04/07/2025, 14:00
In the development of high-Jc superconducting wires, the formation of Nb3Sn is critical, and KAT utilizes Nb filaments combined with SnTi alloy to facilitate Nb3Sn formation. In this study, a ternary alloy was fabricated by incorporating 5 wt% Cu into SnTi alloy via powder metallurgy, resulting in micro-sized SnCuTi alloy particles. These particles were then incorporated into high-Jc wires,...
Go to contribution page -
Mr Jin Kwon04/07/2025, 14:00
High power-density motors are required to meet demand for increasing interest in aircraft electrification. To reach these requirements high current density and lightweight conductors are required in the motor windings. With liquid cryogen on-board, low temperatures (20 K with LH2) are achievable where very high purity normal metals benefit from resistance ratio (RR) values of up to 1000. This...
Go to contribution page -
EunSeok Yang (Department of Future Automotive Mobility, Seoul National University, Seoul, 08826, Korea)04/07/2025, 14:00
Growing environmental concerns have increased the demand for high-power-density electric propulsion systems. One way to achieve higher power density is through the use of superconducting technology. In particular, no-insulation (NI) high-temperature superconducting (HTS) coils offer improved power density due to their ability to carry high currents and withstand external...
Go to contribution page -
Dr Sisi Deng (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)04/07/2025, 14:00
The torque tube is crucial for the normal operation of high-temperature superconducting motors, serving as a mechanical support and torque transmission element. Including adiabatic performance, cold shrinkage performance and mechanical stress, the performances of torque tube are important indicators in superconducting electrical design, which need to be analyzed and studied comprehensively....
Go to contribution page -
Dr Shuhei Kato (Nihon University)04/07/2025, 14:00
Flywheel generators are used as power sources for various plasma experiments because of their long-life span and high-power repetition. However, huge capacity inverters for energy conversion have been necessary to charge and discharge rotating energy. Furthermore, in conventional flywheel generators, the power output also decreases as the rotation speed decreases. In response to this, the...
Go to contribution page -
Dr Juzhuang Yan (Beihang University)04/07/2025, 14:00
Aviation electric propulsion is characterized by distributed propulsion, flexible maneuverability, and high efficiency with low pollution. The aviation superconducting electric propulsion system based on the concept of direct-drive power generation from turbines, which is one of the most promising solutions for meeting the power demands of high-power aviation electric propulsion aircraft. This...
Go to contribution page -
Haigening Wei (University of Cambridge)04/07/2025, 14:00
The development of high-temperature superconducting (HTS) electrical machines results in applications of various fields, as they have higher efficiency and power density. Axial field machine (AFM) is a machine topology with higher efficiency and power density, and is a novel way to achieve fully-superconducting electrical machine for various applications. Stacked HTS coated-conductors (CC)...
Go to contribution page -
Qi Wang (University of Cambridge)04/07/2025, 14:00
High-Temperature Superconducting (HTS) Coated Conductors (CCs) can be sliced and stacked together and utilised as Trapped Field Stacks (TFSs) for electric motors and generators after magnetisation. However, TFSs are vulnerable to higher-order harmonic waves within the air gap of electric machines, which stem from the stator's alternating arrangement of slots and teeth, leading to a phenomenon...
Go to contribution page -
Dabin Wei (Shanghai Institute of Applied Physics, Chinese Academy of Sciences,)04/07/2025, 14:00Poster
The bulk high-temperature superconducting (HTS) undulator constructed from RE-Ba-Cu-O (REBCO) bulks demonstrates the capability to generate an undulator field up to 2.1 T of 10 mm period [1]. This performance exceeds that of the current state-of-the-art permanent magnet and low-temperature superconducting undulators [2]. Compared to REBCO bulks, the alternative MgB2 bulk superconductors...
Go to contribution page -
TingYi Chung (NSRRC)04/07/2025, 14:00Poster
In order to meet the requirement for rapid switching between left- and right-handed circularly polarized light, we have designed and constructed an undulator incorporating a combination of permanent magnets and electromagnets. The 0.5-meter-long prototype undulator generates a horizontal magnetic field through four rows of permanent magnets, each with adjustable horizontal gaps, while the...
Go to contribution page -
Dr Wei Zhang (Shanghai Advanced Research Institute, Chinese Academy of Sciences)04/07/2025, 14:00Poster
The Shanghai Synchrotron Radiation Facility (SSRF) insertion device team is developing several 4.2-meter-long elliptically polarized undulators (EPU) for the Hefei Advanced Light Facility (HALF). Magnet keepers are directly installed onto the sliding girders, rather than utilizing traditional pre-assembled subassemblies, to ensure precise positioning of the magnets in the beam direction. We...
Go to contribution page -
JUN WANG04/07/2025, 14:00Poster
The performance of synchrotron radiation or free electron lasers is not only dependent on the quality of the electron beam but also on the quality of the magnetic field of the insertion devices, making accurate magnetic field measurement critical. Conventional measurement methods typically use Hall probes for point-by-point measurements. However, the use of Hall probes becomes difficult in...
Go to contribution page -
Wei Zhang04/07/2025, 14:00Poster
The FEL-II beamline of the Shanghai High Repetition Rate XFEL and Extreme Light Facility (SHINE) will utilize 14 advanced double-period undulators to cover the photon energy range from 0.4 to 3 keV. Magnetic force compensation technology has been adopted to reduce the overall size of the undulator to address the limited tunnel space. Specifically, a new magnet array is added next to the...
Go to contribution page -
Jun Wang (Shanghai Advanced Research Institute, Chinese Academy of Sciences)04/07/2025, 14:00Poster
Precise magnetic field measurement of undulators is a cornerstone in optimizing synchrotron radiation facilities. This study introduces a position-sensitive Detector (PSD)-based system aimed at enhancing the accuracy of point measurements using Hall probes. By focusing on the challenges of positional deviation and misalignment, the system improves the precision of magnetic field data critical...
Go to contribution page -
Jun Wang04/07/2025, 14:00Poster
Phase error is a critical indicator of the performance of undulator magnetic fields, directly determining the quality of the radiated light. The rigidity and deformation of the upper and lower girders have a direct impact on the magnitude of phase error, and this deformation is primarily caused by the interaction forces between the magnets. These interaction forces generate mechanical stress,...
Go to contribution page -
Peter S. Moore (Tufts University)04/07/2025, 14:00
High-field magnet designs for fusion increasingly utilize stacked high-temperature superconducting (HTS) tapes embedded in a solder matrix through vacuum impregnation. The extreme mechanical loads placed upon the tapes as well as multiple sources of heating within a fusion machine make voids within the solder matrix represent a critical source of uncertainty. If not properly accounted for...
Go to contribution page -
632. Fri-Af-Po.11-02: A low AC loss, fast ramp HTS solenoid prototype for compact spherical tokamaksYuhu Zhai (Princeton Plasma Physics Laboratory)04/07/2025, 14:00
Next-step US spherical tokamak test facilities and/or compact stellarators configured as fusion pilot plants (FPP) to support fusion commercialization are recommended options by multiple recent consensus studies. The goal for a FPP is to make 50-100 MW net electricity power plants with either extended long pulses or steady state options. Significant HTS conductor and coil technology efforts...
Go to contribution page -
Houxiang Han (ASIPP)04/07/2025, 14:00
The superconducting conductor performance test facility SUPER-X, as an integral part of the superconducting magnet system for the key fusion reactor core system, is currently being developed by the Institute of Plasma Physics, Chinese Academy of Sciences. The 15T DC magnet in SUPER-X test facility serves as the core component, consisting of LF (low field) pancake coils and MF & HF (medium...
Go to contribution page -
Mahesh Ghate (Institute for Plasma Research, Bhat, Gandhinagar, India)04/07/2025, 14:00
High-temperature superconducting (HTS) magnets are emerging as key R&D components for compact and economical future fusion devices. Institute for Plasma Research (IPR), India, has undertaken an R&D initiative focused on the design and development of fusion-relevant HTS magnets. This initiative covers the development of compact solenoids and D-shaped magnets and dedicated test facilities. As a...
Go to contribution page -
Alex Davies (Tokamak Energy Ltd.)04/07/2025, 14:00
Demo4 is a unique, high-field device comprised of a total forty-four high-temperature superconducting (HTS) coils made from stacked rare-earth barium copper oxide (REBCO) tapes in a compact, spherical tokamak (ST) configuration. The complete magnet set consists of twenty-eight toroidal field (TF) coils manufactured into fourteen TF limbs, and sixteen poloidal field (PF) coils in two PF stacks....
Go to contribution page -
Annie Hughes (Commonwealth Fusion Systems)04/07/2025, 14:00
The SPARC tokamak developed by Commonwealth Fusion Systems (CFS) and the Massachusetts Institute of Technology Plasma Science and Fusion Center (MIT PSCFC) uses pulsed high temperature superconductor (HTS) magnets with composite insulation. Each of the SPARC insulated magnets is to be acceptance tested to 21 kV in Paschen minimum conditions, and any failures are to be repaired before...
Go to contribution page -
Bryce Fledderman (General Atomics)04/07/2025, 14:00
General Atomics (GA) is fabricating seven ITER Central Solenoid Modules (CSM) for the ITER Organization (IO). As part of the fabrication process, all CSMs undergo factory acceptance testing (FAT) prior to shipment to the IO. The FAT includes Paschen testing the CSMs up to 15kV between 1e-3 and 100 mbar. During post-cooldown Paschen testing of CSM6, there was a fault on one of the terminal...
Go to contribution page -
Valerio Tomarchio (Fusion for Energy (F4E))05/07/2025, 08:00
JT-60SA is the world’s biggest operating tokamak (R=3, a=1.2) having achieved a plasma volume of 160m$^3$ in 2023. As the first of a new generation of large fusion experimental machines, its commissioning represents a unique opportunity to gain invaluable operational experience.
Go to contribution page
The magnets form the backbone of any tokamak, and the superconducting magnet systems of JT-60SA play a critical... -
Dr Neil Mitchell (Gauss Fusion)05/07/2025, 08:00
The GFG Fusion Power Plant is based on a stellarator with a four period quasi isodynamic plasma which, supported by results from Wendelstein 7X and advances in plasma modelling and stellarator optimisation, is expected to achieve the required confinement levels. It is sized to provide output electrical power comparable to a conventional large power plant, with realistic assumptions about power...
Go to contribution page -
Masami Iio (High Energy Accelerator Research Organization (KEK))05/07/2025, 08:00Contributed Oral
The superconducting solenoid for the muon source to be installed in the future second target station of materials and life science experimental facility of J-PARC is required to be highly radiation resistant. Over a 10-year operation period, the superconducting solenoid is expected to reach an absorbed dose of 100 MGy and a neutron fluence of 7.8$\times10^{22}$ $n/m^{2}$. A research and...
Go to contribution page -
Marika D'Addazio (Politecnico di Torino / LBNL)05/07/2025, 08:15Contributed Oral
The US Magnet Development Program is considering REBCO symmetric tape round (STAR®) wires as candidates for the next generation of high-field hybrid magnets for high-energy particle colliders. In high-field dipole magnets, the conductors experience strong mechanical loads transverse to their longitudinal axis. The current-carrying capability of the superconductor may decrease under these...
Go to contribution page -
Yasuyuki Miyoshi (ITER Organization)05/07/2025, 08:30
ITER Central Solenoid (CS) at the heart of tokamak progresses its assembly on a platform in the ITER Assembly Hall where the six coil modules are vertically stacked and connected individually to their corresponding bus bar leads, and finally to be installed with all structural components that apply a vertical pre-compression on the completed stack. The status of manufacturing and assembly of...
Go to contribution page -
677. Sat-Mo-Or2-02: Prototyping and test of the Canis 3x3 magnet array for stellarator field shapingDaniel Nash (Thea Energy, Inc.)05/07/2025, 08:30Contributed Oral
Thea Energy, Inc. is currently developing the “Eos” planar coil stellarator, the Company’s first integrated fusion system capable of forming optimized stellarator magnetic fields without complex and costly modular coils. To demonstrate the field shaping capability required to enable a planar coil stellarator, Thea Energy designed, prototyped, and tested the "Canis" 3x3 array of...
Go to contribution page -
Minzheng Jiang05/07/2025, 08:30Contributed Oral
This study investigates the impact of nickel-plated YBCO (Yttrium Barium Copper Oxide) tapes on current sharing levels and performance, as compared to traditional copper-wrapped tapes. Prior simulations demonstrated a correlation between defect density and current sharing levels, prompting an experimental evaluation. Nickel-plated tapes were utilized to enhance thermal conductivity by...
Go to contribution page -
Sriharsha Venuturumilli (Openstar Technologies Ltd)05/07/2025, 08:45Contributed Oral
High-Temperature Superconducting (HTS) fusion magnets play a pivotal role in plasma confinement for tokamaks and stellarators. Building on insights from the LDX and RT-1 programs, Openstar Technologies has developed a novel approach utilizing ReBCO for a levitated dipole magnet, powered by HTS flux pumps. We aimed to demonstrate a 5.6 T DC magnet made of 14 solder impregnated HTS coils,...
Go to contribution page -
Dr Romain Babouche (Université de Genève)05/07/2025, 08:45Contributed Oral
Understanding the dependence of the critical current, I$_c$, on magnetic field intensity and orientation, as well as on temperature is essential for developing reliable models for REBCO tape-based magnet design. This knowledge is particularly critical for advancing ultra-high-field magnets (20–40 T) required for applications ranging from fusion and particle accelerators to high-field science....
Go to contribution page -
Yury Ilin (ITER Organization)05/07/2025, 09:00Contributed Oral
The ITER Pre-Compression Ring system provides radial constraint and centripetal load to the 18 TF coils. The rings are composed of six pultruded fiberglass-reinforced composite rings with an external diameter of 5.6 m, a cross-sectional area of 95,600 mm², and a weight of 3.4 tons each. These rings are designed to operate at 4.2 K during 20 years under preload given at room temperature during...
Go to contribution page -
Daniel Louis Arthur Biek (EPFL, Swiss Plasma Center)05/07/2025, 09:00Contributed Oral
A candidate of fusion reactor using magnetic confinement is the stellarator, which has an inherently steady-state nature. Among the various stellarator types, the optimized stellarator represents a promising topology. One challenge is the complex coil shapes required to create the necessary magnetic field to confine the plasma. As the achievable fusion power increases with the strength of the...
Go to contribution page -
Dr Jan Jaroszynski (National High Magnetic Field Laboratory FSU)05/07/2025, 09:00Contributed Oral
This is a comparative study of the angular critical current ($I_c$) in different REBCO coated conductors (CC) at high magnetic fields ($B < 45$ T) performed with torque magnetometry (US Patent 12,187,540)
Go to contribution page
The high $I_c$ of REBCO makes transport measurements challenging at low temperatures ($T$) and high $B$, which are crucial for magnet construction and pinning mechanism studies. On the... -
Mr Kenneth Khumthong (General Atomics)05/07/2025, 09:15Contributed Oral
The ITER Central Solenoid (CS) is under fabrication by the US ITER organization and its subcontractors. US ITER will supply seven modules to ITER IO, six of which will be assembled in a stack that forms the ITER Central Solenoid. All CS modules (CSM) were or will be tested at 40 kA in the Final Test facility at General Atomics.
Go to contribution page
CSM 3 testing campaign took place in 2021, and a breakdown... -
Dr Victor Prost (Renaissance Fusion)05/07/2025, 09:15Contributed Oral
Stellarators have traditionally been constructed using complex 3D magnets to produce the helical-shaped magnetic field configuration needed to confine the plasma. The complexity of manufacturing stellarator magnets has prevented their large-scale development, despite their advantageous steady-state operations and current-free plasmas compared to other magnetic confinement devices such as...
Go to contribution page -
So Noguchi (Hokkaido University)05/07/2025, 09:30
We have manufactured the 1/2-scale demonstration no-insulation (NI) REBCO magnet system for ‘skeleton cyclotron’ with no iron core (air-core), called “Ultra Baby Skeleton Cyclotron (UBSC).” The USBC magnet consists of center coils, main coils and AVF coils generating the azimuthal varying field. The outermost size of magnet is approximately 70 cm, and the designed center magnetic field is 1.6...
Go to contribution page -
Ernesto De Matteis (INFN Milano - LASA)05/07/2025, 09:30
A detailed overview of the ultimate magnet design developed within Work Package 8 of the collaborative European project HITRIplus is presented. Focused on the development of superconducting magnets for ion therapy synchrotron and gantry systems, the study introduces an innovative approach utilizing a curved Canted Cosine Theta layout magnet based on NbTi superconductor. The design targets a...
Go to contribution page -
Kieran Geiger (CERN)05/07/2025, 09:30
Closed-circuit cooling of superconducting magnets unlocks new possibilities for advanced accelerator designs and applications. In hadron therapy, it has clear potential for compact rotating gantries, while for future accelerator cryogenic systems it could significantly reduce helium inventories. For this reason, a 1 m long Closed Helium Circuit Cooled (CHiC) straight demonstrator magnet is...
Go to contribution page -
Marek Mosat (Lawrence Berkeley National Laboratory)05/07/2025, 09:30
We present results from testing a high-temperature superconducting (HTS) magnet prototype for proton therapy. This magnet is specifically designed for a novel rotating gantry capable of delivering the entire proton beam energy range (70–225 MeV) while maintaining a fixed magnetic field in the superconducting magnets. The gantry's innovative layout simplifies the magnet design by enabling the...
Go to contribution page -
Fernando Toral (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))05/07/2025, 09:30
Canted Cosine Theta magnets are a very promising layout for applications in small accelerator systems, for example for the gantries needed at hadron therapy facilities. A 1-meter-long, straight and combined function magnet demonstrator with 80 mm aperture diameter, 4 T central field and 5 T/m quadrupole component is under development in the framework of the European-funded project IFAST. The...
Go to contribution page -
Chiyuan Ma (Huazhong University of Science and Technology)05/07/2025, 09:30
Microrobots are increasingly being applied in bionics and medicine, demonstrating significant potential in minimally invasive surgery and targeted drug delivery. Among them, magnetic microrobots have attracted considerable attention, driven by the interaction between external magnetic fields and built-in permanent magnets. This enables the separation of the driving system from the robot body,...
Go to contribution page -
Bin Qin (Huazhong University of Science and Technology)05/07/2025, 09:30
Various types of magnets, including dipole, quadrupole, sextupole and combined-function type, are used for beam transportation and delivery in proton therapy systems (PTS). Toward urgent demands for lightweight PTS, we will discuss the opportunities and challenges on magnet design issues, especially for gantry beamline. Two gantry beamline design schemes will be introduced and compared: (1) a...
Go to contribution page -
Mr Liangyu Xia (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)05/07/2025, 09:30
Subtle variations in cell density often serve as precursors to shifts in physiological characteristics. Consequently, the accurate detection and detailed characterization of cell density are of paramount importance for elucidating cellular functional states, pharmacological responses, and cellular heterogeneity. Contemporary mainstream methods for density-based characterization predominantly...
Go to contribution page -
Mr Jixiong Ren (Institute of Electrical Engineering, Chinese Academy of Sciences)05/07/2025, 09:30D03: Magnets for other Medical and Biological ApplicationsPoster
The magnetic field distribution of externally driven permanent magnets and its effects on the magnetic force and torque at the tip of a Magnetic Guidewire (MG) directly determine the precision of its deflection and movement. To enhance the control accuracy of MGs within blood vessels, this study proposes an MG magnetic driving model based on a nonlinear magnetic field. The research begins by...
Go to contribution page -
Mr Zhifan Teng (Institute of Electrical Engineering, Chinese Academy of Sciences)05/07/2025, 09:30
For a single permanent magnet to control the orientation of the magnetically controlled capsule endoscope (MCCE), it is difficult to meet the demand for a complex orientation adjustment in three-dimensional space due to the non-uniformity of the magnetic field and insufficient torque. A cooperative control strategy of dual permanent magnets based on a rotating magnetic field is proposed to...
Go to contribution page -
Yan Li (College of Nuclear Technology and Automation Engineering, Chengdu University of Technology)05/07/2025, 09:30
As a non-invasive and painless treatment method for neurological diseases, transcranial magnetic stimulation has shown great potential in the diagnosis and treatment of central nervous system diseases and mental disorders. To improve the accuracy of stimulation in specific brain areas and reduce side effects during the treatment, the geometric structural design of the stimulation coil has...
Go to contribution page -
Dr Youngjae Kim (NHMFL/FSU)05/07/2025, 09:30
The over-pressure heat-treatment (OPHT) processed Bi-2212 insert coil technology for high field (> 24 T) magnet systems is based on two critical technologies developed at the National High Magnetic Field Laboratory (NHMFL): optimized OPHT process for high in-field performance (JE ~ 900 A/mm2 at 20 T) and introduction of alumina fiber reinforcement for efficient magnetic stress management. In...
Go to contribution page -
Emma Bianchi (INFN)05/07/2025, 09:30
The Superconducting Ion Gantry (SIG) project is part of a collaborative effort between INFN, CERN, CNAO, and MedAustron to improve cancer treatment through the development of lightweight, compact ion gantries. These systems aim to enhance patient care by enabling precise, non-coplanar irradiation with reduced damage to surrounding healthy tissues. Central to this effort is the design of a 4 T...
Go to contribution page -
Prof. Hiroshi Ueda (Okayama University)05/07/2025, 09:30
Compact cyclotrons are required to produce radiopharmaceuticals used in targeted alpha-particle therapy, which is a promising treatment for patients with intractable cancers. To realize a compact cyclotron, we have proposed the Skeleton Cyclotron—an air-core compact cyclotron using high-temperature superconducting (HTS) technology. This cyclotron consists of circular and non-circular coils,...
Go to contribution page -
Chao Zhou (Institute of Plasma Physics, Chinese Academy of Sciences)05/07/2025, 09:30
Abstract：High field nuclear magnetic resonance spectrometer (NMR) is an important scientific instrument in the fields of biology and chemistry, mainly used for qualitative and quantitative analysis of organic and inorganic substance structures. High field NMR superconducting magnets require higher magnetic field strength, smaller magnetic field uniformity, lower magnetic field drift, and...
Go to contribution page -
Dr Tatsuhiko Miyatake (National Institutes for Quantum Science and Technology)05/07/2025, 09:30
In heavy ion therapy, reducing not only the radius of the rotating gantry but also the size of the power supplies for the gantry's magnets is crucial to miniaturizing the facility. The rotating gantry primarily consists of several bending magnets and a downstream scanning system. The use of combined-function superconducting magnets and cosine-theta-type combined X-Y scanning magnets has...
Go to contribution page -
Mr Colin McCormack (Commonwealth Fusion Systems)05/07/2025, 09:30
The SPARC Central Solenoid Model Coil (CSMC) designed and built by Commonwealth Fusion Systems in collaboration with the Massachusetts Institute of Technology Plasma Science and Fusion Center (MIT PSFC) aims to de-risk design aspects of the SPARC CS. One of the main risks associated with the bucked design of the SPARC tokomak is the large loads from the Toroidal Field magnets on the Central...
Go to contribution page -
Luigi Reccia (Fusion for Energy)05/07/2025, 09:30
IO (ITER Organization) planned cold tests for Toroidal Field (TF) and Poloidal Field (PF1) coils, and a test facility is under development for this specific purpose. The TF coil test campaign foresees a series of tests at half operational current and a final one at full current, 68kA. The latter requires a further development of the facility, due to the severity of the test together with a...
Go to contribution page -
Xabier Sarasola (EPFL-SPC)05/07/2025, 09:30
The magnet at the core of the EDIPO2 test facility aims at generating a 15 T background field within a 144×144 mm² aperture and maintaining a field homogeneity length of 900 mm (assuming a 1% drop of the field). Its design features two pairs of flat racetrack coils: one pair (vertical coils) located above and below the aperture, and another pair (side coils) located on its sides. All coils are...
Go to contribution page -
Dr Vittorio Di Marzo (Università degli studi di Napoli Federico II)05/07/2025, 09:30
This work investigates the potential advantages of using a High-Temperature Superconducting (HTS) Central Solenoid (CS) in the Divertor Tokamak Test (DTT), an Italian nuclear fusion project based in Frascati, Italy, aiming to complete its engineering design phase by 2025 and construction by 2031. To sustain sufficiently long plasma discharges, the project requires a high-performing CS capable...
Go to contribution page -
Hee-Jae Ahn (KFE)05/07/2025, 09:30
The KSTAR superconducting magnet system is designed to confine and control the high-temperature plasma necessary for nuclear fusion reactions. It comprises Toroidal Field (TF) coils, Poloidal Field (PF) coils, and Central Solenoid (CS). The TF coils generate a strong toroidal magnetic field to confine the plasma, the PF coils control the plasma’s vertical position and shape, and the CS induces...
Go to contribution page -
Yury Ilin (ITER Organization)05/07/2025, 09:30
The ITER superconducting magnet system comprises 18 Toroidal Field (TF) coils, one Central Solenoid (CS), 6 Poloidal Field (PF) coils, and 18 Correction Coils (CC). These superconducting coils are integrated using robust, flexible structures and over 2,000 high-grade large studs ranging from M56 to M110.
Go to contribution page
During assembly, these studs are preloaded from hundreds to thousands of kN with... -
Baptiste Boudes (CEA Cadarache)05/07/2025, 09:30
Fusion magnets for so-called compact high-field machines present a new challenge for designers. Tools for fast assessment of magnet pre-designs are needed, and a new mechanical toolbox called CIRCE has been developed.
New updates to the analysis tool will be presented, including improved winding pack and casing contact, a detailed inner leg interface between adjacent tf coils and...
Go to contribution page -
Tom Simpson (OpenStar Technologies)05/07/2025, 09:30
The Levitated Dipole Reactor (LDR) is a promising concept for confining fusion relevant plasmas. In an LDR, a high field dipole magnet (core) is levitated in a large vacuum chamber, mimicking the plasma confinement physics observed in planetary magnetospheres. The performance of an LDR is largely determined by the ability of the core magnet to resist the natural diamagnetic expansion of the...
Go to contribution page -
Egemen Kolemen (Princeton University, Princeton Plasma Physics Laboratory)05/07/2025, 09:30
High-temperature superconducting (HTS) coated conductors (CCs) have become increasingly available for high-field magnet applications, thanks to continual advancements in manufacturing. Previous studies have revealed that HTS CCs, characterized by their anisotropic lattice structures, exhibit a critical current density that strongly depends on the angle between the magnetic field and the tape...
Go to contribution page -
Dr Mirko Pojer (CERN)05/07/2025, 09:30
At the beginning of the next long shutdown, foreseen mid 2026, the Large Hadron Collider (LHC) will have been in operation for almost 20 years. After this time lapse, the operation of the present Energy Extraction (EE) systems, that are part of the protection of the superconducting circuits of the LHC, will present significant challenges. . As many system components will have exceeded their...
Go to contribution page -
Ki Hong Kim (Korea University)05/07/2025, 09:30
During the operation of rotating motors based on superconducting coils, impregnation is used to enhance the mechanical integrity against rotational vibration and to protect the superconducting coils from mechanical disturbances in strong magnetic fields. Generally, epoxy resin is primarily used for high-temperature superconducting (HTS) coil impregnation because of its low cost, excellent...
Go to contribution page -
Younghoon Kim (Korea University)05/07/2025, 09:30
The fabrication of superconducting coils using high-temperature superconductor (HTS) tape necessitates the use of soldering processes to join sections of tape or to connect the tape to the current lead. During this process, flux is commonly used to remove the oxide layer from the copper stabilizer to improve the soldering quality. However, residual flux remaining on the surface or permeating...
Go to contribution page -
Dr Teng Wang (Institute of Plasma Physics, Chinese Academy of Sciences)05/07/2025, 09:30
The design and development of quench detection for the CFETR TF prototype coil is in progress, which is expected to be completed in the fourth quarter of 2025. According to the quench simulation analysis, the voltage detection with a threshold of 200 mV and a delay of 2 s satisfies the quench detection design criteria, that is, the hotspot temperature is less than 150 K. The foundation of a...
Go to contribution page -
Vitaly Vysotsky (Russian Scientific R&D Cable Institute)05/07/2025, 09:30
To achieve magnetic fields above 20 T in modern magnets for fusion devices and high-energy physics accelerators, the use of high-temperature superconductors (HTS) at low temperatures below 20 K is proposed. In recent years, there has been active development of increasingly larger HTS coil systems. However, as the size of the magnets increases, the issues of stability and protection for these...
Go to contribution page -
Zhiwen Cheng05/07/2025, 09:30
A 9.0 T frameless conduction-cooled superconducting magnet has been successfully developed in our laboratory. The electromagnetic design was accomplished using a hybrid global optimization method. The magnet features a cold clear bore of 95 mm. Leveraging the frameless design, the consumption of superconducting wire is reduced by approximately 20% compared to conventional designs with an...
Go to contribution page -
Tom Simpson (OpenStar Technologies)05/07/2025, 09:30
A magnet undergoing a quench is one of the most challenging scenarios for any operator, often leading to potential failure of the magnet. While quench phenomena are well understood in LTS magnets—where manufacturers deliberately induce quenches during commissioning to ensure reliability—the same cannot be said for HTS magnets. Challenges such as the slow propagation of the normal zone and a...
Go to contribution page -
Mr Oriol Fernández Serracanta (University of Strathclyde)05/07/2025, 09:30
The results of numerical and experimental studies of fundamentals of the quench monitoring technique based on frequency and time domain reflectometry (FTDR) are discussed. To carry out fast (real time) monitoring of the coolant gas temperature and thus to observe evolution and prevent the quenching in superconducting (SC) magnets the techniques of detection and analysis of microwave...
Go to contribution page -
So Noguchi (Hokkaido University)05/07/2025, 09:30
Screening currents on REBCO magnets are well known as causes of troublesome. The screening current-induced fields cause a low quality; i.e., it deteriorates the field homogeneity or generate unexpected fields. In recent years, the local high strain effect due to screening currents has been investigated. The screening current under high magnetic fields rotate REBCO tapes. It results the REBCO...
Go to contribution page -
Cedric Korte (Tsinghua University)05/07/2025, 09:30
High-temperature superconducting (HTS) magnets are essential for advanced applications such as particle accelerators and fusion reactors, requiring effective quench management to ensure safety and performance. No-insulation (NI) coils, which allow current to move between turns during quench events, are commonly used in HTS magnet design. However, the contact conditions between turns in NI...
Go to contribution page -
Dr Dharmendra Shukla (National High Magnetic Field Laboratory)05/07/2025, 09:30
Active quench protection systems in large superconducting magnets rely on the rapid and efficient delivery of heat from quench heaters to the magnet windings to initiate a controlled quench. However, thermal diffusion is significantly influenced by the multi-layered electrical insulation, thermal barriers, and contact resistance between surfaces. This work presents simulation results that...
Go to contribution page -
Matthew Leoschke (The Pennsylvania State University)05/07/2025, 09:30
High temperature superconductor (HTS) magnet systems, especially those designed for fusion reactors, require effective and reliable monitoring to avoid damaging anomalies. In tokamaks, some of the magnetic coils are time dependent, which cause additional strain and electromagnetic effects within the magnet system. Ionizing radiation can also lead to non-uniform degradation of conductors. The...
Go to contribution page -
Uijong Bong (Hinetics, Inc.)05/07/2025, 09:30
This paper presents the quench test results and analysis of no-insulation (NI) REBCO (Rare-Earth Barium Copper Oxide) double pancake racetrack coils under conduction cooling conditions. Two racetrack coils, differing in dimensions and number of turns (280 and 488 turns), were tested at a temperature of 50 K each. The current was ramped up to their critical values until quenching occurred,...
Go to contribution page -
Maria Baldini05/07/2025, 09:30
HTS coils will be an essential component of future accelerator magnets. Among the existing challenges, there is the lack of a robust quench detection system for HTS magnet technology. In this work, we explore the use of distributed fiber optics for local real-time monitoring of temperature variations. Fiber optic sensors based on Rayleigh backscattering were used on a series of test performed...
Go to contribution page -
Xie Bowen (University of Science and Technology of China)05/07/2025, 09:30
REBCO tapes are promising material for the
Go to contribution page
construction of high field magnets because of large engineering
critical current densities at high field, however, the slow normal zone propagation velocity (NZPV) makes the protection against
quenches a critical issue. Stability margin of REBCO cables is
two or three orders of magnitude greater than that of lowtemperature superconducting cables,... -
Dr Peng Song (Tsinghua University)05/07/2025, 09:30
High temperature superconducting (HTS) accelerator magnets can achieve higher magnetic field with higher current capacity. However, with the shielding current effect of the HTS materials, the current distribution inside REBCO tape will deviate from uniform current assumption, which results in a higher sextupole field harmonics. To compensate sextupole harmonic field in the accelerator magnet...
Go to contribution page -
Jiaqi Lu (Tsinghua University)05/07/2025, 09:30
A new testing facility employing a 15-T transverse field to access the full-service-field characteristics of superconducting materials is now under development in China. A primary objective involves producing a large bore 15-T dipole magnet to serve as the source of the transverse magnetic field load. The magnet consists of a Low-Temperature Superconducting (LTS) dipole magnet providing 12 T...
Go to contribution page -
Jennifer Doyle (LBNL)05/07/2025, 09:30
As a member of the multi-lab U.S. High Luminosity LHC Accelerator Upgrade Project (HL-LHC AUP), Lawrence Berkeley National Laboratory (LBNL) is assembling high-field Nb3Sn low-beta MQXFA quadrupole magnets for eventual installation at CERN as part of the HL-LHC upgrade. Each magnet undergoes room temperature magnetic measurements at two points during the assembly process: once after completion...
Go to contribution page -
Wan Chen05/07/2025, 09:30
The upgrade project for the Beijing Electron-Positron Collider (BEPCII) aims to enhance the colliding beam energy from 1.89 GeV to 2.35 GeV, increasing the peak colliding beam energy to 2.8 GeV. In order to meet the requirement for higher luminosity at higher energy, newly designed superconducting magnets have been developed for the interaction region. These superconducting magnets consist of...
Go to contribution page -
TingYi Chung (NSRRC)05/07/2025, 09:30
Cryogenic permanent magnet undulators(CPMUs) and superconducting magnets are essential components of synchrotron light sources. The SAFALI system is a commonly used method for measuring magnetic field performance. However, installing and using the SAFALI system to measure the magnetic field in CPMUs with smaller gaps presents significant challenges. In previous studies, we used the PWM system...
Go to contribution page -
Mei Yang05/07/2025, 09:30
The stretched wire method is one of the magnet alignment techniques and also the field measurement techniques, especially for long and narrow magnets. A stretched wire measurement system has been developed at IHEP to measure the roll angles of the longitudinal gradient dipole and quadrupole magnets, as well as two superconducting combined quadrupole magnets in the horizontal test. The wire...
Go to contribution page -
Laura Garcia Fajardo05/07/2025, 09:30
As part of the U.S. Magnet Development Program, LBNL fabricated a hybrid magnet combining Nb3Sn and Bi-2212 canted-cosine theta (CCT) coils. This hybrid magnet integrates CCT5, a 1 m long, 90 mm bore Nb3Sn dipole magnet with BIN5c, a 39 cm long, 30.8 mm bore Bi-2212 dipole magnet. These magnets were fabricated and tested individually, and they were not originally designed to be assembled...
Go to contribution page -
Laura Garcia Fajardo05/07/2025, 09:30
The MQXFA quadrupoles of the U.S High Luminosity LHC Accelerator Upgrade Project are being assembled at the Lawrence Berkeley National Laboratory, and then tested vertically in liquid helium (LHe), at 1.9 K, at the Brookhaven National Laboratory. Three magnets initially did not pass the vertical test due to lack of coil support at the end region. These magnets were re-assembled with increased...
Go to contribution page -
Laura Garcia Fajardo05/07/2025, 09:30Poster
In the framework of the U.S. Magnet Development Program, LBNL is planning to fabricate a high field hybrid magnet combining Nb3Sn and Bi-2212 dipole magnets. The Nb3Sn outsert will be a four-coil canted cosine theta (CCT) dipole magnet, designed to generate 14 T in a 120 mm bore diameter. The Bi-2212 insert aims to achieve the highest field possible in a 40-45 mm diameter bore. Coil designs...
Go to contribution page -
Tushar Garg (The Ohio State University)05/07/2025, 09:30Poster
This study presents the conduction-cooled current injection design/thermal gradient and cyclic testing for a ReBCO canted cos-theta magnet designed and Fabricated by LBNL (magnet C2). This coil has been measured at 77 K (LN2) and 4.2 K (liquid helium), as previously reported by LBNL, but in this case, we used a large conduction cooled cryostat available at OSU. Testing this coil in a...
Go to contribution page -
Simone Busatto05/07/2025, 09:30Poster
Energy consumption represents an increasing critical challenge for particle physics research laboratories like CERN. This issue is particularly significant in large accelerator facilities, where normal conducting magnet technology plays a fundamental role in the beamline design. In this context, research, development, and study of high-temperature superconducting (HTS) magnets offer promising...
Go to contribution page -
Milan Majoros05/07/2025, 09:30Poster
Quench and protection in superconducting magnets wound using REBCO cables is important for high energy particle accelerators. Quite large minimum quench energy (MQE) and quite low normal zone propagation (NZP) velocity has led to an interest in electrically non-insulation coils. We analyzed numerically, using a Finite Element Method (FEM), the performance of REBCO cable containing various...
Go to contribution page -
Daniele Turrioni, Vladimir Kashikhin05/07/2025, 09:30Poster
Magnet systems of particle accelerators consist of many various types of magnets. There is an interest in replacing rather low-field conventional resistive magnets with high-temperature superconducting (HTS) magnets. The main goal is to reduce operational expenses which is critical during the continuously increasing cost of electricity. At Fermilab were built and successfully tested several...
Go to contribution page -
Prof. Wenjie Yang (Institute of modern physics)05/07/2025, 09:30Poster
High-temperature superconducting (HTS) magnets, with their superior current-carrying capacity and high operating temperatures, have shown considerable potential for applications in medical imaging, particle accelerators, power transmission, and scientific instrumentation. However, HTS coated conductors (CCS) are susceptible to significant shielding current effects due to their high aspect...
Go to contribution page -
Yufan Yan (Lawrence Berkeley National Laboratory)05/07/2025, 09:30Poster
We present design options and initial prototyping of CORC Canted Cosine Theta (CCT) dipole inserts compatible with testing in the ~8 T background field of the existing Nb3Sn outsert CCT5. We explore different CCT geometries and configurations, seeking to optimize the coil geometry to meet the minimum bending radii requirements of the CORC conductor with maximum coil magnetic efficiency. The...
Go to contribution page -
Xueliang Wang (Shanghai Jiao Tong University)05/07/2025, 09:30
With the widespread application of high-temperature superconducting (HTS) REBCO tapes in fields such as energy, healthcare, and transportation, their operating environments have become increasingly complex, placing higher demands on their operational stability. Although the multi-filamentary REBCO tapes can improve the electromagnetic performance, specific metals and compounds in REBCO tapes...
Go to contribution page -
Dr Stefano Sgobba (CERN)05/07/2025, 09:30
Although superconducting accelerator and fusion magnets operate at cryogenic temperature and in most cryogenic applications corrosion is not an issue, it is essential to avoid corrosion phenomena that may occur during production and fabrication of parts and components of magnet systems, or during their installation, assembly or maintenance. A delayed leak or a structural failure that would...
Go to contribution page -
Mr Yang Guo (The Ohio State University)05/07/2025, 09:30
Rare-earth barium copper oxide (ReBCO) coated conductors (CCs) are considered promising materials for high-performance cables and high-field accelerator magnet design. ReBCO tape-wound magnets with no insulation between tapes were designed to protect themselves from thermal instability through a current-sharing mechanism. However, they face challenges such as insufficient mechanical support...
Go to contribution page -
Xudong Wang (High Energy Accelerator Research Organization)05/07/2025, 09:30F05: Structural and Insulation Materials for Magnets, Other Magnet ComponentsPoster
An organic olefin-based thermosetting dicyclopentadiene (DCP) resin is commercially available in Japan as TELENE® from RIMTEC Corporation, and its viscosity is less than one-tenth that of the CTD-101K® epoxy resin. In previous studies, the TELENE® can withstand greater strain than CTD-101K® and can achieve higher heat capacity when mixed with ceramic powders from a previous study. The use of...
Go to contribution page -
Steve Krave05/07/2025, 09:30
Epoxy cracking has been the main suspected contributor to training in Nb3Sn magnets for some time, as it leads to energy release and magnet quenching. Cracking in a superconducting composite can occur from several modes, and the likelihood of these modes is not well understood. Failure has been observed between insulation systems and the superconducting cable itself rather than within the...
Go to contribution page -
Laurin Joseph (Commonwealth Fusion Systems)05/07/2025, 09:30
Commonwealth Fusion Systems (CFS) is currently developing and building a commercially relevant fusion energy machine that will produce more energy than is put into it (SPARC). In this research, an insulation that electrically isolates the toroidal field (TF) magnets from each other is being tested to determine its behavior, evolution, and failure rate during the shear displacement and high...
Go to contribution page -
Dr Mattia Ortino (EPFL-SPC)05/07/2025, 09:30
Progress on NI-coil design for EU DEMO
M.Ortino, N. Bykovskiy
École Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC),
CH-5232 Villigen PSI, Switzerland.This study presents the latest results of a 3D original Matlab code, developed for simulating in a fast fashion the charge/discharge of a EUROfusion DEMO toroidal field (TF) coil, by especially coupling both...
Go to contribution page -
Emma Martin (ASC-NHMFL-FSU)05/07/2025, 09:30
Bi-2212 multi-filament round wire is a high-field capable, isotropic conductor that does not experience the large screening-current stresses suffered by ReBCO. Together with its high current carrying capabilities, Bi-2212 is a very promising candidate for compact high-field/high-homogeneity magnets. Superconducting coils tend to experience large mechanical stresses under operating conditions....
Go to contribution page -
Chris Kovacs (Scintillating Solutions LLC)05/07/2025, 09:30
There remains an urgent need for higher thermal conductivity electrical insulation for high steady-state thermally loaded superconducting and cryoresistive electromagnets, such as those used for fusion, undulator light sources, particle colliders, and alternating-current operated electric machines. Polymeric materials, which are currently used, demonstrate degraded thermal conductivity at...
Go to contribution page -
Hyunsoo Park (Seoul National University)05/07/2025, 09:30
High-temperature superconducting (HTS) rare-earth barium copper oxide (REBCO) magnets are typically fabricated in a stacked configuration of pancake coils. Conventionally, the electrical connections between pancake coils is achieved by joining the REBCO splice with soldering process. In this process, solder flux is applied to remove oxide layer on the REBCO tape surface and to enhance solder...
Go to contribution page -
Prof. Shinichi Nomura (Meiji University)05/07/2025, 09:30
Superconducting magnetic energy storage (SMES) is a promising candidate for electric power compensation. The target applications of SMES are widely covered with voltage sag, instant shortage, power stabilization, frequency control, load fluctuation, and load leveling. High-temperature superconductors are expected to reduce refrigeration energy requirements for superconducting coils....
Go to contribution page -
Dazhi Li (Huazhong University of Science and Technology)05/07/2025, 09:30
As the proportion of intermittent energy sources such as wind and solar power increases in the power grid, the importance of energy storage technology in the power system becomes increasingly evident. Among various technologies, Superconducting Magnetic Energy Storage (SMES) is unique for its fast response, dynamic power compensation, high charge-discharge cycles, and long lifespan, offering...
Go to contribution page -
Haiyang Liu (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences)05/07/2025, 09:30
To fulfill the demand for high-performance magnetic fields in extreme environments, such as those found in maglev trains, the implementation of superconducting magnets with high cur-rent-carrying density offers a lightweight alternative to traditional copper or permanent magnets. This is particularly significant for enhancing the safety and cost-effectiveness of high-speed maglev trains. In...
Go to contribution page -
Ashish Bhardwaj (Los Alamos National Laboratory, FAMU-FSU College of Engineering, Center for Advanced Power Systems)05/07/2025, 09:30
Pulsed power applications, such as pulsed-field magnets, electromagnetic launchers, and fusion experiments, require high-performance, efficient, and compact energy storage systems. These applications demand large amounts of energy in short bursts, often at high rates, which traditional energy storage technologies cannot support effectively or are highly inefficient. Superconducting Magnetic...
Go to contribution page -
Haolan Chen05/07/2025, 09:30
High-temperature superconducting REBCO coated conductors are promising for applications in high-field magnets due to their high critical current and electromagnetic performance. However, screening currents in these conductors generate undesirable effects such as screening current-induced fields (SCIF), leading to magnetic field drift, and internal stress, limiting their use in large-scale...
Go to contribution page -
Mr Shixian Liu (Institute of Electrical Engineering, Chinese Academy of Sciences)05/07/2025, 09:30
High-temperature superconducting (HTS) maglev has the advantages of strong suspension ability, high speed, and low operating cost, which is an important candidate technology for future high-speed rail transportation, and the on-board HTS magnet is one of its core components. In recent years, metal-insulated (MI) winding technology has brought better mechanical stability and good...
Go to contribution page -
Prof. Lei Chen05/07/2025, 09:30
This paper focuses on the conceptual design and evaluation of an HTS magnet for superconducting magnetic energy storage (SMES) aimed at mitigating subsynchronous oscillation (SSO) caused by a virtual synchronous generator (VSG). Considering the frequency characteristics of the 150 kW class VSG and its requirements for decreasing the fluctuations, the stored energy of the SMES magnet is set as...
Go to contribution page -
Dr Valery Petrykin (Faraday Factory Japan LLC), Dr Alexander Molodyk (Faraday Factory Japan LLC)05/07/2025, 11:15Invited Oral
Faraday Factory Japan (FFJ) has established itself as a leader in the second generation of high-temperature superconducting (2G-HTS) wire production through continuous advancements in manufacturing capacity, innovative technology, and research excellence. In 2024, FFJ commissioned a state-of-the-art facility in Zama (Japan), enabling the production of over 1,000 kilometers of 12 mm...
Go to contribution page -
Anjana Saravanan05/07/2025, 11:15Contributed Oral
Eliminating quench training in superconducting accelerator magnets requires understanding the underlying mechanical transients, which include cracking of the impregnation material, interfacial debonding between the impregnation material and conductor, and slip-stick conductor motion; these events can release heat and lead to premature quenching and training. Earlier, we developed a system...
Go to contribution page -
Franco Julio Mangiarotti (CERN)05/07/2025, 11:15Contributed Oral
At the heart of the High-Luminosity project (HL-LHC) of the CERN Large Hadron Collider (LHC), new low-beta* Nb$_3$Sn superconducting quadrupole magnets will be installed on each side of the ATLAS and CMS experiments. Half of these magnets are built by CERN and are called MQXFB. A total of 12 MQXFB magnets are being constructed: two to be installed in the IT String facility, for systems...
Go to contribution page -
Eino Johannes Tiirinen (CERN, University of Tartu)05/07/2025, 11:30Contributed Oral
Quenches are a major issue for superconducting magnets because of their high current density which translates to high stored magnetic energy and eventually heat dissipation that may cause irreversible damage if left unadressed. Designing a well-protected magnet against quenches is one of the key considerations in the design. The objective of this paper is to describe the experimental...
Go to contribution page -
Guram Chlachidze05/07/2025, 11:30Contributed Oral
The US High-Luminosity LHC Accelerator Upgrade Project (AUP) is responsible for delivering cryo-assemblies for the Q1/Q3 quadrupole optical components of the High Luminosity LHC upgrade at CERN. Total of 10 cryo-assemblies containing two Nb3Sn quadrupole magnets per cold mass will be delivered within this program. After the successful test of the first pre-series cryo-assembly in 2023, two...
Go to contribution page -
Dr Tommaso Bagni (Gauss Fusion)05/07/2025, 11:45Invited Oral
The installation and maintenance of components within the vacuum vessel (VV) of fusion power plants (FPPs) are heavily constrained by access limitations. In current magnetic confinement fusion experiments, access is typically restricted to the space between magnetic coils, significantly limiting the size of components that can be installed or maintained. These constraints are even more...
Go to contribution page -
Jaap Kosse (PSI)05/07/2025, 11:45Contributed Oral
We present a modeling framework to evaluate the feasibility of using a close-coupled-secondary (CCS) for quench protection of stellarator magnets. Foreseen compact stellarator fusion reactors feature non-planar high-temperature-superconductor (HTS) coils with a large stored magnet energy, on the order of 100 GJ. Safely extracting this energy in case of a quench requires avoiding excessive...
Go to contribution page -
Gerard Willering (CERN)05/07/2025, 11:45Contributed Oral
The High-Luminosity upgrade of the LHC at CERN requires 32 new cryo-assemblies to be installed around the interaction points 1 and 5. They incorporate 90 magnets of various types, and in addition several prototypes and spares are built. The magnets are produced within the HL-LHC project, and a large part is tested at CERN. Most of the magnets are tested first in standalone configuration in a...
Go to contribution page -
Venkat Selvamanickam (University of Houston)05/07/2025, 12:00Contributed Oral
We have developed a new fast quench detection method for superconducting devices utilizing the REBCO superconductor tape itself as a microwave transmission line. Unlike voltage detection where the signal is proportional to the length of the normal zone, a 100-m-long transmission line will effectively become two 50-m transmission lines if quench occurs midway along the tape, joined by a...
Go to contribution page -
Alessandra Pampaloni05/07/2025, 12:00Contributed Oral
The High-Luminosity LHC (HL-LHC) upgrade aims to increase the colliders integrated luminosity by an order of magnitude through significant modifications to the interaction region layout. One of the key hardware components involved in this upgrade is the MBRD combination-recombination dipole, a double-aperture magnet with magnetic fields aligned in both bores. For this magnet, a magnetic field...
Go to contribution page -
Aurobindo Siddarth Swaminathan (UKIFS)05/07/2025, 12:15Contributed Oral
The Spherical Tokamak for Energy Production (STEP) is a prototype fusion power plant, planned to be operational in the 2040s. STEP TF coils consist of cables operating at 90kA of current with a peak-field on coil of 16T. These cables are jointed together through a remountable interface at multiple locations in the coil pack which allow for remote maintenance. The joints are intended to operate...
Go to contribution page -
Vittorio Marinozzi (FNAL)05/07/2025, 12:15Contributed Oral
The development of high-field magnets using high-temperature superconductors (HTS) presents significant challenges, particularly in quench detection and protection. Due to the inherently slow quench propagation in HTS, conventional detection and protection methods may be ineffective. To address these challenges, novel approaches are being explored by the magnet community. A possible method...
Go to contribution page -
Fernando Toral (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))05/07/2025, 12:15Contributed Oral
MCBXF magnets are orbit correctors for the High-Luminosity (HL) Large Hadron Collider (LHC) upgrade. The magnet design consists of two nested dipoles, with an aperture of 150 mm. The magnets have been designed in two physical lengths, namely of 2.5 m (MCBXFA) and 1.5 m (MCBXFB), with the same cross section. The series production of the magnets consists of 6 long and 11 short magnets and being...
Go to contribution page -
Matt Bristow (Tokamak Energy Ltd)05/07/2025, 12:30Contributed Oral
There are many applications, companies and institutes pursuing and building large and high field REBCO magnets for a variety of applications, for example the toroidal field coils of a tokamak. Using a classical external dump for discharge and quench protection presents several problems, such as very high voltages. Whether or not these magnets can be protected using internal non-insulation or...
Go to contribution page -
Dr Maxim Marchevsky (Lawrence Berkeley National Laboratory)05/07/2025, 12:30Contributed Oral
Quench detection is a crucial technology that enables using HTS conductors in high-field magnets for high-energy physics and fusion applications. At the same time, hot spot localization capability provides valuable insights to magnet developers and operators. Distributed temperature sensing along the conductor path can achieve both goals and is especially suitable for fast-ramping magnets or...
Go to contribution page -
Kento Suzuki (KEK)05/07/2025, 12:30Contributed Oral
KEK have so far tested four series beam separation dipoles, a.k.a. D1 (MBXF) magnets, for the High Luminosity LHC upgrade (HL-LHC). The magnet is wound on Nb-Ti Rutherford cables and designed to operate at 1.9 K generating a central field of 5.6 T with a magnetic length of 6.3 m, which corresponds to a field integral of 35 Tm. All the series magnets were subjected to a quench training campaign...
Go to contribution page -
Walid Abdel Maksoud (CEA)05/07/2025, 12:45Contributed Oral
The French government has recently launched the SupraFusion Research Program lead by CEA and CNRS with the partnership of multiple other national laboratories and universities. This national program has been granted 50 M€ in order to boost the development of HTS superconductors technology towards large societal applications, using the vector of nuclear fusion as a powerful driver for this...
Go to contribution page -
Febin Kurian (BNL)05/07/2025, 12:45Contributed Oral
The production of the MQXFA low-beta quadrupole magnets for the High Luminosity LHC (HL-LHC) is quite advanced with about 20 magnets cold tested in a vertical cryostat. The MQXFA magnets are fabricated by the US HL-LHC Accelerator Upgrade Project (AUP) and are being used in the Q1 and Q3 Inner Triplet (IT) elements of the HL-LHC, whereas CERN is fabricating similar magnets for Q2a and Q2b IT...
Go to contribution page -
Thierry Schild05/07/2025, 14:00Invited Oral
ITER project has decided mid 2023, to procure a Magnet Cold Test Facility (MCTF) to test as many as possible Toroidal Field Coils (TFC) and the Poloidal Field Coil PF1, before they will be assembled in the tokamak. An important constraint is that the coil tests shall not impact the tokamak construction. The earliest readiness of the facility is then very important factor to optimize its usage...
Go to contribution page -
Andreas Voss (Neoscan Solutions GmbH), Martijn Cloos (Radboud University), Stefan Roell (Neoscan Solutions GmbH)05/07/2025, 14:00Contributed Oral
Neoscan Solutions is currently building the 14T HTS MRI magnet for whole-body MR imaging and spectroscopy, under the supervision of a magnet committee formed by the DYNAMIC consortium, i.e. seven research institutes and medical centers in the Netherlands who will be using the system. The magnet will be sited at the Radboud University in Nijmegen. It offers an 82 cm wide warm bore for MRI of...
Go to contribution page -
Marco Breschi (Universita e INFN, Bologna (IT))05/07/2025, 14:00
The quest to produce energy from fusion power with magnetic confinement follows two main lines of research and development, as far as the generation of the magnetic field is concerned. On the one hand, several national and international roadmaps to fusion rely on tokamak designs obtained scaling up ITER, i.e. based on low temperature superconducting (LTS) magnets. The use of high temperature...
Go to contribution page -
Dr Pierre Pugnat (LNCMI-Grenoble, CNRS)05/07/2025, 14:15Contributed Oral
A CNRS-CEA French collaboration has developed and built a new modular hybrid magnet at LNCMI-Grenoble to provide intense magnetic fields and fluxes. It was designed to reach in its main configuration at least 43 T in a 34 mm warm bore aperture with 24 MW of electrical power. This can be achieved by combining water cooled resistive inserts, including Cu-alloy polyhelix (25.5 T) and Bitter coils...
Go to contribution page -
Rui Diaz-Pacheco (Commonwealth Fusion Systems)05/07/2025, 14:15
SPARC is a compact, high-field tokamak based on high temperature superconductor (HTS) magnets developed by Commonwealth Fusion Systems and the Massachusetts Institute of Technology. This research explores the mechanical and electromagnetic behavior of SPARC’s cable-based magnet systems, namely the Central Solenoid (CS), the Poloidal Field Coils (PF), and the feeder (FEED) systems. Our studies...
Go to contribution page -
Gueorgui Velev05/07/2025, 14:30Contributed Oral
Fermi National Accelerator Laboratory (Fermilab) is constructing a new High Field Vertical Magnet Test Facility (HFVMTF) with capabilities comparable to the European facilities EDIPO and FRESCA2. The facility, located at Fermilab, will feature a background magnetic field of 15 T, generated by a magnet provided by Lawrence Berkeley National Laboratory (LBNL). The HFVMTF will support two U.S....
Go to contribution page -
Sergei Zherlitsyn (Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany)05/07/2025, 14:30Contributed Oral
The Dresden High Magnetic Field Laboratory (HLD), a member of the European Magnetic Field Laboratory (EMFL), is a pulsed-field user facility that allows external and internal researchers to perform a wide range of experiments in pulsed magnetic fields [1]. Taking advantage of two independent, modular 50 and 14 MJ capacitor banks with charging voltages up to 24 kV, we operate a large variety of...
Go to contribution page -
Prof. Nagato Yanagi (National Institute for Fusion Science)05/07/2025, 14:30
The High-Temperature Superconducting (HTS) magnet is being developed for the fusion reactor magnets. One of the options for the large-current HTS conductor is a simple stacking type in which REBCO tapes are stacked without twisting or transposing.
Go to contribution page
The Stacked Tapes Assembled in Rigid Structure (STARS) conductor has been developed at the National Institute for Fusion Science (NIFS) since... -
Xabier Sarasola (EPFL-SPC)05/07/2025, 14:45Contributed Oral
Over the past two decades, the SULTAN test facility at EPFL-SPC has qualified superconductors for all major superconducting fusion facilities worldwide. However, the increasing demand for higher field and higher current conductors—partly driven by the development of High Temperature Superconductors —requires testing capabilities beyond those of SULTAN (limited to a background field of ≤11 T...
Go to contribution page -
Doan Nguyen05/07/2025, 14:45Contributed Oral
The National High Magnetic Field Laboratory (NHMFL) – Pulsed Field Facility (PFF) at Los Alamos operates ten pulsed magnet stations that deliver magnetic fields up to 100 T for user experiments. In recent years, PFF has enhanced its capabilities with upgraded magnets, enabling the generation of higher magnetic fields and an increased number of pulses. This presentation will provide an overview...
Go to contribution page -
Dr Luigi Muzzi (ENEA)05/07/2025, 14:45
The ENEA Superconductivity Laboratory, in collaboration with the industrial partner TRATOS Cavi, is continuing the development activity of the high-current / high-field SECAS Cable-in-Conduit conductor, based on stacked REBCO tapes and a segmented, sector-shaped Cu former. The test outcome of various prototypes, carried out at 77 K and self-field in the previous years, have clarified important...
Go to contribution page -
Yuhu Zhai (Princeton Plasma Physics Laboratory)05/07/2025, 15:00Contributed Oral
Significant efforts to advance high temperature superconductor (HTS) and HTS coil technology are underway by privately funded startups with the goal to demonstrate HTS maturity for commercial fusion. The goal for a fusion pilot plant (FPP) is to make 50-100 MW net electricity power plants with either extended long pulses or steady state options. Although a high current, self-field test...
Go to contribution page -
Gianluca Vernassa (CERN, ATS-DO & Ecole des Mines de Saint-Etienne)05/07/2025, 15:00Contributed Oral
The need for strong steady state magnetic fields, of 40 T and above, raises several new challenges in the design of superconducting magnets. Rare-earth barium copper oxide (REBCO) coated conductors (CCs) are nowadays the strongest candidates for this type of applications, yet the layered structure of these materials carries along the major mechanical challenges. Recent tests of ultra-high...
Go to contribution page -
Makoto Takayasu05/07/2025, 15:00
Rare Earth-Barium-Copper-Oxide (REBCO) High-Temperature superconductor (HTS) exhibits high-current performance in high magnetic fields. Various cabling methods for REBCO tapes have been developed, including Roebel Assembled Coated Conductor (RACC), Stacked Tapes Assembled in Rigid Structure (STARS), Conductor-On-Round Core (CORC®), Twisted Stacked-Tape Cable (TSTC), and a few other...
Go to contribution page -
05/07/2025, 15:15
-
Dr Eva Cuninková (Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, Jána Bottu 2781/25, 917-24 Trnava, Slovakia)05/07/2025, 15:15
REBCO CC (Rare-earth barium copper oxide coated conductors) are the best candidate materials for superconducting TORT (tapes on round tube) cables and high-field magnets due to their excellent mechanical strength, high current-carrying capacity, and magnetic strength. It is currently known that the AC (alternating current) loss can be decreased when TORT cables are made using REBCO...
Go to contribution page -
Graham Dunbar (Tokamak Energy Limited)05/07/2025, 15:30Contributed Oral
• Tokamak Energy is pursuing commercial fusion energy based on the development of spherical tokamaks with high temperature superconducting (HTS) magnets.
Go to contribution page
• The Demo4 project is an ambitious high field HTS magnet build that has delivered a full spherical tokamak magnet system. This will provide a world first demonstration of the operation of a representative array of coils in a toroidal and... -
Prof. Chao Zhou (Institute of Plasma Physics Chinese Academy of Sciences)05/07/2025, 15:30
As the high critical current at high field, the representative second-generation high-temperature superconductor (2G HTS) ReBCO serves as a good candidate for future fusion devices, i.e. the Chinese fusion engineering test reactor (CFETR), the Demonstration Power Station (DEMO) with magnet field higher than 15T. The main goal of CFETR is to build a fusion engineering tokamak reactor with a...
Go to contribution page -
Rui Diaz-Pacheco (Commonwealth Fusion Systems)05/07/2025, 15:45Contributed Oral
The SPARC compact, high-field tokamak developed by Commonwealth Fusion Systems and the Massachusetts Institute of Technology is based on high temperature superconductor (HTS) magnets. This device employs 8 Poloidal Field PF magnets which are made with PIT-VIPER cable wound in pancakes, the smallest measuring 1.2 meters radius, and the largest 8 meters. There are 10-14 pancakes in each magnet,...
Go to contribution page -
Danko van der Laan05/07/2025, 15:45
It has been widely recognized that compact fusion machines that take advantage of high-temperature superconductors (HTS), which allow magnets to operate at relatively high magnetic fields and at temperatures that won’t require liquid helium cooling, have the potential to significantly reduce the timeline towards net fusion energy production. HTS also may enable demountable toroidal field (TF)...
Go to contribution page -
Justin Schwartz (University of Colorado Boulder), with inputs from around the world05/07/2025, 16:30
Hubertus (Huub) Wilhelmus Weijers joined the National High Magnetic Field at the Florida State University in 1992, before the NHMFL’s grand opening and as one of the first new hires focused on building the delta B program, conceived of by Steve Van Sciver. Although this was only a few years after the discovery of HTS materials, Steve recognized that HTS would be vital to the long term future...
Go to contribution page -
Gianmarco Bovone (University of Geneva)05/07/2025, 16:30Contributed Oral
We introduced internal oxidation in Rod-in-Tube (RIT) Nb3Sn subelements, used in simplified restacked wire, by using SnO2 powders as an oxygen source (OS). During Nb3Sn synthesis, the OS decomposed, resulting in a grain size below 60 nm. This grain refinement is consistent with an increase of the critical current density (Jc) towards the performance...
Go to contribution page -
Yifeng Yang (University of Southampton (GB))05/07/2025, 16:30Contributed Oral
Magnetisation losses of Roebel cable samples with striated REBCO strands were measured at different temperatures between 4K and 85K in ac magnetic fields up to 0.2T. While the losses of Roebel cables with non-striated strands were shown previously in quantitative agreement with the losses of magnetically coupled two side-by-side tape stacks as thin Norris' strips, significantly differences in...
Go to contribution page -
Prof. Satoshi Awaji (Tohoku University)05/07/2025, 16:45Contributed Oral
We have proposed “Robust REBCO coil” concept for high field cryogen-free superconducting magnet (CSM), which consists of two REBCO tapes co-winding and edge-impregnation. It is expected that the two tapes co-winding in direct electric contact can reduce the risk of burn-out coming from local degradations and the edge-impregnation reduce the maximum hoop stress [1-3]. From an electromagnetic...
Go to contribution page -
Dr Akihiro Kikuchi (National Institute for Materials Science)05/07/2025, 16:45Contributed Oral
The National Institute for Materials Science (NIMS) is ongoing the R&D on ultrafine Nb3Sn superconducting wires less than 50 microns in diameter. So far, we have successfully fabricated a kilometer-scale of Nb3Sn ultrafine wire through the bronze process. The starting billet was assembled by 19 Nb rods, a bronze alloy matrix of Cu-14%Sn-0.3%Ti. The outer diameter of the starting billet is...
Go to contribution page -
05/07/2025, 16:45
-
Dr Dongkeun Park (Massachusetts Institute of Technology)05/07/2025, 17:00Contributed Oral
We present an update on the ongoing development of the MIT 1.3-GHz nuclear magnetic resonance (NMR) magnet system (1.3G). The 1.3G consists of a 19.6-T (835-MHz) high-temperature superconducting (HTS) REBCO insert magnet (H835) and an 11.7-T (500-MHz) low-temperature superconducting (LTS) background magnet (L500). These two magnets are coaxially aligned and independently powered to generate a...
Go to contribution page -
Jean-Francois Croteau (Lawrence Berkeley National Laboratory)05/07/2025, 17:00Contributed Oral
Novel ultrafine jelly roll Nb3Sn ultrafine wires, i.e. ~50 μm diameter, offer the potential of building Nb3Sn magnets using the react-and-wind approach with high-Jc wires. The high flexibility of these wires due to their small diameter, the ability to assemble multiple of them in Rutherford cables, and the long unit lengths that have recently been manufactured motivates further studying the...
Go to contribution page -
Prof. Naoyuki Amemiya (Kyoto University)05/07/2025, 17:00Contributed Oral
The Spiral Copper-plated Striated Coated-conductor cable (SCSC cable) is our novel concept of high current cable with low ac loss, in which copper-plated multifilament (striated) coated conductors are wound spirally on a metal core in multiple layers. Whereas copper-plating allows current sharing among filaments against local defects in a filament, filaments are decoupled electromagnetically...
Go to contribution page -
Shannon Griffin (National High Magnetic Field Laboratory at Florida State University)05/07/2025, 17:15Contributed Oral
The Large Scale Coil (LSC) is a high-temperature superconducting (HTS) coil that has been developed and tested in the research and development efforts for the 40-T All-Superconducting Magnet Project at the National High Magnetic Field Laboratory. The LSC is composed of stacked pancake disks consisting of 2-in-hand wound rare-earth barium copper oxide coated conductor (CC REBCO) tapes with...
Go to contribution page -
Michela Bracco05/07/2025, 17:15Contributed Oral
Superconducting magnets in particle accelerators currently use mostly a Nb-Ti alloy, which has a critical temperature (𝑇𝑐) of 9.2 K and a critical field (𝐵𝑐2) of 14.5 T. However, future particle accelerators, such as those beyond the LHC, will require dipole magnets capable of generating fields of 16 T or higher. This necessitates a shift to high-performance superconductors, with the...
Go to contribution page -
Michael Sumption05/07/2025, 17:15Contributed Oral
CORC, STAR, and in general, conductors consisting of a set of helically wound conductors on a round core are of substantial interest for use in High Energy Physics accelerator magnets because of their high Bc2 and excellent transport properties in high fields. Their magnetization properties as well as their AC loss are also of interest, because they can cause particle beam defocusing and...
Go to contribution page -
Liangjun Shao (Massachusetts Institute of Technology, Francis Bitter Magnet Lab/Plasma Science and Fusion Center)05/07/2025, 17:30Contributed Oral
Ultra-high field magnets are being developed for various applications in fundamental-physics experiments, materials sciences, and nuclear magnetic resonance (NMR). Here we report our recent R&D work focused on conceptual design and enabling technologies for a 40 T all-superconducting solenoid magnet with a 20-mm warn bore, intended for potential high-energy partial physics experiments....
Go to contribution page -
Joanna Kuczynska (Universite de Geneve (CH))05/07/2025, 17:30Contributed Oral
Proposed 14 T Nb3Sn magnet designs for a future energy-frontier circular collider often call for wires with higher Jc, larger diameter and lower copper to non-copper (Cu:nonCu) ratio. As well as pushing Nb3Sn superconducting wire technology to its performance limits, these characteristics all prove challenging for magneto-thermal stability.
Go to contribution page
This study investigates the stability of Nb3Sn wires... -
Tushar Garg (The Ohio State University)05/07/2025, 17:30Contributed Oral
This study investigates the magnetization of ReBCO cables, utilizing experimental measurements in magnetic fields up to 30 T at 4.2 K. The cable is comprised of 29 ReBCO tapes, with a cable OD of 3.63 mm and cable pitch of 7.16 mm. The tapes were 2 mm wide and had a substrate thickness of 30 μm, and a Cu plating thickness of 5 μm. The cable had an Ic of 1675 A at 77 K and self-field. The ReBCO...
Go to contribution page -
Danko van der Laan05/07/2025, 17:45Contributed Oral
Dipole magnets that approach or surpass magnetic fields of 20 T for use in future particle circular accelerators, and high-field solenoids that operate at 20 K, such as envisioned in a multi-TeV muon collider, require the use of high-temperature superconductors (HTS). Several prototype magnets based on high-current HTS CORC® cables and wires, wound from REBCO coated conductors, have been...
Go to contribution page -
Pengju Li (Western Superconducting Technologies Co., Ltd.)05/07/2025, 17:45Contributed Oral
To develop superconducting wires suitable for applications demanding extremely high magnetic fields, we conducted an experimental investigation on the optimization of microstructure and heat treatment processes aimed at enhancing the critical current density (non-Cu Jc) at 16 T in Internal-tin type multifilamentary Nb3Sn superconducting wires fabricated in WST. Utilizing comprehensive...
Go to contribution page -
Min Zhang (University of Strathclyde)05/07/2025, 17:45Contributed Oral
This presentation reports AC loss study for parallel-wound HTS coils used for AC applications, e.g. fusion PF coil and rotational machines. The reason for parallel winding is to increase the current rating of winding without increasing too much the winding inductance. We made several four-conductor parallelly wound HTS coils and measured both the current distribution and AC loss. Our...
Go to contribution page -
Arnaud Badel (CNRS - Université Grenoble Alpes)05/07/2025, 18:00Contributed Oral
REBCO HTS material makes it possible to consider very high engineering current densities in coil windings even above 10 T with operation temperatures up to 30 K. In this work, we present the design of a 500 mm bore split-coil magnet made of two stacks of REBCO double-pancakes. It is developed as a platform offering eihter 10 T in a mid-plane room temperature bore for magneto-science, or up to...
Go to contribution page -
Wei Xie (Western Superconducting Technologies Co., Ltd, Xi’an 710018, People’s Republic of China)05/07/2025, 18:00Contributed Oral
MgB2 is one of the practical superconductors that has been widely studied over the past two decades. The internal magnesium diffusion (IMD) method serves as a promising method because it can enhance the grain connectivity of MgB2 phase and thereby improve the superconducting current of MgB2 wires. In this work, we successfuly fabricate the km-class 30-filament MgB2 wires using the IMD method,...
Go to contribution page -
496. Sat-Af-Mem1-08: Experimental studies on performance of YBCO magnet in self-field and high fieldShili Jiang (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences)05/07/2025, 18:15Contributed Oral
YBCO is one of the best choices for high field superconducting magnets due to its high current carrying capacity. We present a highly compact no-insulation (NI) magnet wound with 45-micrometer-thick YBCO high temperature superconducting (HTS) tape. A YBCO magnet with one double pancake (DP) coil generated a direct-current magnetic field of 28.20-tesla (the current is 740.4 A), the highest...
Go to contribution page -
05/07/2025, 18:15
-
David Fischer06/07/2025, 08:00Invited Oral
Fusion magnets in deuterium-tritium based power plants will experience bombardment by high energy neutrons during operation. This is a particular severe problem for REBCO-based compact high-field fusion reactors. The fusion magnets in these devices will typically be operated at around 20 K and accumulate radiation damage at this very temperature.
Go to contribution page
We have commissioned a cryogenic ion... -
Vikas Teotia (Brookhaven National Laboratory)06/07/2025, 08:00Contributed Oral
Project 8 aims at measurement of the absolute neutrino mass using tritium, by precisely measuring the energies of the beta-decay electrons in the high-energy tail of the spectrum. A trap for atomic tritium is envisaged using a Ioffe magnet, which is discussed in this paper. The fundamental requirement is to trap atomic tritium within a large microwave cavity for cyclotron radiation emission...
Go to contribution page -
Dr Pierre Pugnat06/07/2025, 08:00
The hybrid superconducting resistive magnet (M8) in Grenoble has reached an important milestone in 2024 : 42T was reached in a cold bore of 34mm. The first experiments are planned in 2025.
Go to contribution page
The experimental setup which had allowed to reach this important milestone will be described, as well as the tests which were done in the commissioning phase. This hybrid magnet is planned to be integrated... -
Philip Mallon (Lawrence Berkeley National Laboratory)06/07/2025, 08:15Contributed Oral
Several superconducting electron cyclotron resonance (ECR) ion sources for heavy ion accelerators are in operation around the world. These rely primarily on magnets wound using Nb-Ti conductors. Development toward the use of Nb$_{3}$Sn conductor as an alternative conductor is advancing, with higher magnetic field limits resulting in higher intensity high charge beams being a primary...
Go to contribution page -
06/07/2025, 08:20
-
Leonardo Civale (Department of Physics, University of Connecticut)06/07/2025, 08:30Contributed Oral
Strong efforts to develop magnets for compact fusion reactors using coated conductors (CC) are presently underway. To determine the operational lifetime of fusion magnets, it is necessary to know the effects of radiation damage on the critical current density J$_c$ of the CC. According to plans, fusion magnets will operate between 10 and 30 K in a background field up to 20 T. As portions of...
Go to contribution page -
Dr Christian Roux (GSI Helmholtzzentrum für Schwerionenforschung GmbH)06/07/2025, 08:30Contributed Oral
Superconducting magnets for SIS100 and Super-FRS - project progress
The heavy ion synchrotron SIS100 and the fragment separator Super-FRS form the central elements of the novel accelerator facility FAIR at Darmstadt, Germany. In both machines, superconducting magnets are utilised for the ion-optical lattice.
Go to contribution page
Currently, the production and testing of the magnet series are ongoing involving... -
Dr Mattia Ortino (EPFL-SPC)06/07/2025, 08:45Contributed Oral
The new type of insulation where metals, varistors on more in general media with a change in resistivity are called “smart insulation”. Among the latter, metal-to-insulator transition (MIT) materials have lately collected interest, since one could get both the advantage of a full insulation during charge/operation (low T) and hot-spot redistribution during a quench (high T).
Go to contribution page
In this respect,... -
Jaap Kosse (PSI)06/07/2025, 08:45Contributed Oral
We present our work on the HTS4 project, part of the CHART framework and the FCC Feasibility Study, on energy-efficient nested HTS magnets for FCC-ee. By replacing the normal conducting sextupole and quadrupole magnets in the 2900 short straight sections by HTS nested variants, significant amounts of energy can be saved. This follows from 1) avoiding ohmic dissipation in the sextupoles and...
Go to contribution page -
Mark Bird (NHMFL - Florida State University)06/07/2025, 08:45
The National High Magnetic Field Laboratory (MagLab) operates high field user facilities in Tallahassee (dc, NMR, EMR, ICR) and Gainesville (MRI, HiB/T), Florida, and Los Alamos, New Mexico (pulsed). These facilities serve approximately 2,000 scientists every year. The recent arrival of ultra-high field magnets based on the high temperature superconductors (HTS) is expected to impact most of...
Go to contribution page -
Chiarasole Fiamozzi Zignani (ENEA)06/07/2025, 09:00Contributed Oral
The DTT magnetic system is mainly constituted by the following superconducting coil sets: 18 Toroidal Field (TF) magnets, 6 external Poloidal Field (PF) coils and a stack of 6 independently fed Central Solenoid (CS) modules. The PF coils system, characterized by a full top-down symmetry, is realized in Nb3Sn (PF1 and PF6) and NbTi (PF2, PF3, PF4 and PF5). This work is focused on the SULTAN...
Go to contribution page -
Dr Stefano Sorti (University of Milan and INFN Milan, LASA laboratory)06/07/2025, 09:00Contributed Oral
The Innovative Research Infrastructure on Applied Superconductivity (IRIS) is a project funded by the Italian Minister for University and Research, with leadership assigned to INFN, and LASA laboratory serving as its coordinator. This project, currently in its final phase, involves the design and construction of an Energy Saving, fully high-temperature superconducting dipole Magnet for...
Go to contribution page -
Liang Li (Wuhan National High Magnetic Field Center)06/07/2025, 09:10
The Wuhan National High Magnetic Field Center at Huazhong University of Science and Technology China is one of the premier facilities worldwide for conducting experiments at pulsed high magnetic fields. The Center has been operational for 13 years. Currently, a 28 MJ capacitor bank consisting of 22 modules of 1.2 MJ each and 2 modules of 800 kJ each as well as a 100 MJ/100 MVA...
Go to contribution page -
Valentina Corato (ENEA)06/07/2025, 09:15Contributed Oral
An extensive experimental campaign to study the evolution of the quench in REBCO conductors has been carried out within the EU-DEMO programme, motivated by the use of High Temperature Superconducting (HTS) conductors in the Central Solenoid (CS). The aim was to explore the quench initiation and propagation in different conditions in HTS conductors based on stacked tapes layout. Seven...
Go to contribution page -
Yasuhiro H. Matsuda06/07/2025, 09:35
Ultrahigh magnetic fields of 100 to 1000 T (multi-megagauss fields) can be produced destructively [1-4]. In this almost unexplored field range, more interesting magnetic field-induced phenomena are expected to be discovered, in addition to as previously reported the discovery of the novel high magnetic field phase of solid oxygen [5] and the dissociation of molecular orbitals in vanadium...
Go to contribution page -
Prof. Atsuhiko Miyata (Institute for Solid State Physics, University of Tokyo)06/07/2025, 09:50
Pulsed high magnetic fields play a crucial role in advancing numerous scientific disciplines, including condensed matter physics, materials science, chemistry, and biology. Unlike steady magnetic fields, pulsed magnetic fields reach significantly higher field strengths for short durations, enabling unique experimental conditions.
Go to contribution page
The concept of pulsed field magnets dates back to the early... -
Samuele Mariotto06/07/2025, 10:30
The international particle physics community, among different options for the development of future high-energy particle colliders and fundamental interactions exploration, considers Muon Colliders (MC) as a great opportunity to achieve high discovery potential and integrated luminosity compatible with a compact and cost-effective accelerator machine. An international muon collider...
Go to contribution page -
Marika D'Addazio (Politecnico di Torino / LBNL)06/07/2025, 10:40
The aim of providing high collision energy for future particle accelerators relies on the capability to design and demonstrate the feasibility of 20 T dipole magnets. To reach the ambitious goal of a future proton-proton collider, a coordinated effort is required to overcome the current technological limits. The US Magnet Development Program is exploring the hybrid magnets option to reduce the...
Go to contribution page -
Bárbara Maria Oliveira Santos (Rio de Janeiro State University)06/07/2025, 10:50
The use of high temperature superconductors (HTS) in magnetic levitation (Maglev) has been investigated for decades. Superconducting materials may be used in both the propulsion and levitation subsystems of a device. For the propulsion subsystem, their use in electric machinery potentially reduces losses and increases the power to volume or mass ratio. For the levitation subsystems, they are...
Go to contribution page -
Joshua Feldman (University of Illinois)06/07/2025, 11:00
The aviation sector’s greenhouse gas emissions could be reduced by replacing jet engines with electric motor-driven propellers. However, the high power required of these motors is possible only by increasing the motor size and/or the current it carries. Larger size means more mass, which would reduce the plane’s range and payload capability. Higher current means more heat generated by...
Go to contribution page -
Rebecca Riccioli (Paul Scherrer Institut)06/07/2025, 11:10
Particles-therapy is a very promising treatment addressing a critical public health issue such as tumors irradiation with a millimetric precision to spare the neighboring healthy tissues. The main advantage of this technology compared to X-rays is having a very localized treatment avoiding a large energy deposition into healthy tissues. However, despite the great advantages, the main drawbacks...
Go to contribution page -
Zhidong Shen (Department of Electrical Engineering, Tsinghua University)06/07/2025, 11:20
Superconducting wind generators provide significant advantages in terms of power density over conventional wind generators, resulting in reduced weights and volumes, which contribute to significant cost reduction in the installation and maintenance of offshore wind turbines. An efficient cryogenic cooling system is crucial to ensure the safe and stable operation of low-temperature...
Go to contribution page -
Dr Mohammad Yazdani-Asrami (University of Glasgow)06/07/2025, 11:30
The field of applied superconductivity is on the brink of a transformative evolution, driven by the rapid advancements in artificial intelligence (AI). Historically rooted in physics, material engineering, and electrical engineering through experimental tests at cryogenic temperature, deterministic methods and rigorous mathematical modelling, superconductivity now face the necessity of...
Go to contribution page
Choose timezone
Your profile timezone: