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MT27, 27th International Conference on Magnet Technology

15–19 Nov 2021
Fukuoka Convention Center
Asia/Tokyo timezone

Session

WED-OR3-702 Magnetization and Loss

702
17 Nov 2021, 16:00
Fukuoka Convention Center

Fukuoka Convention Center

Conveners

WED-OR3-702 Magnetization and Loss

  • Emmanuele Ravaioli (CERN)
  • Yuji Tsuchiya (Nagoya University)

Presentation materials

There are no materials yet.

  1. 944. Magnetization Relaxation by Shielding Current in Commercial REBCO Tapes (WED-OR3-702-01)
    Dr Yuji Tsuchiya (Nagoya Univ.)
    17/11/2021, 16:00
    Oral

    High-temperature superconducting REBCO tapes are expected to be applied to next-generation magnets for their high critical current density. One of their problems in the magnet application is the magnetic field instability caused by the decay of magnetization due to the shielding current caused by the tape shape. Therefore, it is important to evaluate the magnetization relaxation of REBCO tapes...

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  2. 370. Modeling of screening currents in superconducting non-insulated REBCO magnets: fast and accurate 2D approach (WED-OR3-702-02)
    Dr Enric Pardo (IEE Slovak Academy of Sciences)
    17/11/2021, 16:15
    Oral

    Non-insulated (NI) coils in superconducting REBCO high-field magnets provide electro-thermal stability. However, current transfer between turns through the metal causes transient currents and magnetic fields, increasing the AC loss and requiring longer times to charge the magnet. Therefore, magnet design and optimization requires numerical modeling. Although 3D modeling provides the full...

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  3. 693. Field Quality Measurements of High-Temperature Superconducting Canted Cosine Theta Accelerator Magnets (WED-OR3-702-03)
    Cory Myers (Lawrence Berkeley National Lab)
    17/11/2021, 16:30
    Oral

    High-temperature superconducting (HTS) composites are being considered for use in high-field magnets for future particle accelerators, as they allow the development of very high field dipoles and quadrupoles. As part of the US Magnet Development Program, LBNL is developing Bi2212- and REBCO-based insert magnets towards 20 T hybrid dipole magnets. The field quality of the magnets is important...

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  4. 741. Magnetic Measurements Results and Analysis of the First Batches of Superferric Magnets for the HL-LHC High Order Field Correction (WED-OR3-702-04)
    Dr Ernesto De Matteis (INFN Milan - LASA)
    17/11/2021, 16:45
    Oral

    In agreement with CERN the LASA laboratory of INFN (National Institute for Nuclear Physics) of Milan has carried out the industrial development of a novel type of magnet, for the High Order (HO) correctors of the High Luminosity - LHC (HL-LHC) project. These corrector magnets are based on a superferric design and will be installed in the new HL-LHC insertion regions for the ATLAS and CMS...

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  5. 813. New Methods to Reduce Fast-Ramping AC loss in High Temperature Superconductors Coils at High Currents of 500 A – 800 A (WED-OR3-702-05)
    Honghai Song (Stony Brook University)
    17/11/2021, 17:00
    Oral

    Most of the existing AC loss experiments and simulations of High Temperature Superconductors Coils deal with low currents of less than 100 A, which does not provide sufficient data or analysis for the HTS coils with higher current at 500 A to 800 A. If the AC loss is considerably larger, it will result in high heat dissipation into the HTS coils, and so as to elevate the coil temperature and...

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  6. 390. 3D magnetic field maps and alignment of the Superconducting Multipole Triplet (SMT) (WED-OR3-702-06)
    Dr Alexandre Esper (GANIL)
    17/11/2021, 17:15
    Oral

    The Super Separator Spectrometer (S3) aims to study the limits of the nuclear existence [1][2].
    In order to achieve large momentum as well as charge-state acceptance for S3 layout, a high-gradient field magnet technology that generates a pure normal multipole field has been designed. This magnet is designed according to the current sheet approach. For a better overall quality field produced...

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  7. 221. Analytical modeling of coupling losses in CICCs, extensive study of the COLISEUM model (WED-OR3-702-07)
    Romain Babouche (CEA Cadarache - IRFM)
    17/11/2021, 17:30
    Oral

    Magnetic field and current variations are responsible for AC losses in superconductive magnets. These losses may induce an increase of temperature within the material and negatively affect the performance of the magnet.
    Developed at CEA, the new fully analytical model named COLISEUM (COupling Losses analytIcal Stages cablEs Unified Model) aims at predicting the coupling losses at various...

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  8. 485. Dynamic Simulation on Flow Characteristics of KSTAR PF Magnet Cryogenic Network (WED-OR3-702-08)
    Sangjun Oh (Korea Institute of Fusion Energy)
    17/11/2021, 17:45
    Oral

    During its nominal operation, strong current variation, more than 10 kA per second, can be imposed on the KSTAR PF (Poloidal Field) magnet system. Due to AC loss, transient massive backward flow can occur, especially at the cryogen inlets of each magnet. To protect cryogen circulator, several valves are activated to adjust or lower pressure below the circulator’s operation limit. In this work,...

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