CEC/ICMC 2025 Abstracts & Technical Program

Session

M2Or1A - Characterization of REBCO Conductors II

May 20, 2025, 9:30 AM

Naples 4/5

Conveners

M2Or1A - Characterization of REBCO Conductors II

• Jun-ichi Shimoyama (Aoyama Gakuin University)
• Judy Wu

487. M2Or1A-01: [Invited] Detection of Local Obstacles in Long REBCO Coated Conductors with Introduction of Machine Learning Based Analysis in High-Speed Reel-to-Reel Magnetic Microscopy

Takanobu Kiss

5/20/25, 9:30 AM

Invited Oral

Spatial homogeneity is one of the most important requirements of REBCO coated conductors (CCs) for practical applications. We demonstrated automatic detection of local obstacles in a PLD processed long length REBCO CC by introducing image classification based on machine learning into reel-to-reel scanning Hall-probe magnetic microscopy [1, 2]. This allows us to classify magnetic images...

249. M2Or1A-02: Critical transverse loading limits of REBCO CORC©-like cables for fusion

Dr Arend Nijhuis (University of Twente)

5/20/25, 10:00 AM

Contributed Oral

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). Among the potential candidates, ReBCO tape has emerged as a promising choice. However, the substantial Lorentz forces in these environments can lead to localized mechanical stress, which can...

237. M2Or1A-03: Integrated Platform for 2D Reel-to-Reel Characterization of 2G-HTS Superconductor Combining Raman Spectroscopy, Color Machine Vision, and Curvature Profiling

Nathaly Andrea Castaneda Quintero (University of Houston)

5/20/25, 10:15 AM

Contributed Oral

Characterizing Second-Generation High-Temperature Superconductors (2G-HTS) or REBCO Coated Conductors (CC) (RE = Rare Earth, Barium, Copper Oxide) requires multi-modal approaches to evaluate critical current density (Jc), chemical and structural uniformity, and defect distribution. Laboratory-scale methods are often limited in speed and throughput, limiting their viability for quality control...

349. M2Or1A-04: FEM and Modelica Modelling of Current Sharing in Tape Stack Cables; Influence of ICR, ITR, Defect Number, Defect Patterns, and Thermal Boundary Conditions

Minzheng Jiang

5/20/25, 10:30 AM

Contributed Oral

Previous simulations have shown that the current sharing level decreases with increasing defect density in the middle layer of a three-layer stack cable. Earlier studies focused on a five-layer YBCO tape structure composed of copper, silver, YBCO, Hastelloy, and copper. However, in real-world applications, the buffer layer exists between YBCO and Hastelloy, which has not been accounted for in...

304. M2Or1A-05: Nuclear transmutation effect by thermal neutron on degradation in superconductivity of ReBCO tapes

Prof. Arata Nishimura (National Institute for Fusion Science)

5/20/25, 10:45 AM

Contributed Oral

GdBCO, EuBCO and YBCO tapes were irradiated at Japan Research Reactor #3. The samples were bundled and wrapped with cadmium foil with 25 m thick. The first bundle was wrapped with aluminum foil and no cadmium foil. The second bundle was wrapped with three turns (75 m) of cadmium foil and the third was wrapped with five turns (125 m) of cadmium foil. The maximum thermal neutron and the fast...