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REBCO High Temperature Superconducting Magnets With High Field Stability : Understanding And Mitigating The Shielding Current Effects

Research Project

Project/Area Number 20K04409
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21010:Power engineering-related
Research InstitutionTohoku University

Principal Investigator

BADEL ARNAUD  東北大学, 金属材料研究所, 准教授 (00836017)

Co-Investigator(Kenkyū-buntansha) 淡路 智  東北大学, 金属材料研究所, 教授 (10222770)
Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Discontinued (Fiscal Year 2021)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
KeywordsSuperconducting Magnet / High Tc Superconductors / HTS / High Field magnets / Electromagnetic model / Numerical modelling / high field magnets
Outline of Research at the Start

Using High Temperature Superconductors, especially the Rare-EarthBaCuO coated conductors, makes it possible to build magnets producing very high magnetic field(more than 25 T) with low operation cost. The behaviour of magnets using such conductors is however difficult to predict in details, especially in terms of field homogeneity, which limits their potential use. The aim of this project is to develop our understanding of the transient electromagnetic behaviour of these REBCO magnets and develop measurements and active control technique to reach the higher field quality that users require.

Outline of Annual Research Achievements

In the first year of the project, the numerical model evaluating precisely the electromagnetic behavior of REBCO winding was developed, and experimental validations confirmed its accuracy on small scale test pancakes.
In this last year detailed comparison were conducted on test coils to understand the relationship between current distribution dynamics, voltage, and generated field, which lead to the publication of a joint paper in collaboration with Grenoble CNRS.
Then, the development was continued with the help of a more powerful workstation, which made it possible to simulate one half of a full-size very high field insert, like the one developed at HFLSM in the framework of the 30T CSM project.
The accuracy of the model predictions on large scale systems will have to be confirmed once the magnet is tested in the next years, but already significant insights were obtained in terms of field homogeneity, field drift and AC losses for that magnet. This pave the way for an efficient control of the magnet, and the compensation of field drift in particular.
In parallel, the project evolved toward calculating the consequences of inhomogenous current distribution in REBCO conductors in terms of mechanical stress. This development was triggered by rising concerns in the Applied Superconductivity community about the risk posed by stress concentrations in REBCO windings. The model developed in the course of this project could be readily adapted to provide insight on that topic. This development lead to an invited oral presentation at international conference CEC-ICMC in July 2021.

Report

(2 results)
  • 2021 Annual Research Report
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results) Presentation (4 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] Transient voltages and energy balance in REBCO insulated magnet: experimental and numerical studies2021

    • Author(s)
      Vialle Julien、Badel Arnaud、Rozier Blandine、Tixador Pascal
    • Journal Title

      Superconductor Science and Technology

      Volume: 34 Issue: 11 Pages: 115012-115012

    • DOI

      10.1088/1361-6668/ac2623

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electromagnetic Characteristics Study of Two-ply REBCO Tapes Pancake Coils2021

    • Author(s)
      Takahashi Kohki、Okada Tatsunori、Badel Arnaud、Awaji Satoshi、Miyazaki Hiroshi、Hanai Satoshi、Ioka Shigeru
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Issue: 5 Pages: 4602305-4602305

    • DOI

      10.1109/tasc.2021.3069685

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Detection and Protection Against Quench/Local Thermal Runaway for a 30 T Cryogen-Free Magnet2021

    • Author(s)
      Badel Arnaud、Okada Tatsunori、Takahashi Kohki、Fujita Shinji、Miyazaki Hiroshi、Ioka Shigeru、Awaji Satoshi
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2021.3059604

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Robust REBCO Insert Coil for Upgrade of 25 T Cryogen-Free Superconducting Magnet2021

    • Author(s)
      Awaji Satoshi、Badel Arnaud、Okada Tatsunori、Takahashi Kohki、Miyazaki Hiroshi、Hanai Satoshi、Ioka Shigeru、Fujita Shinji、Muto Shogo、Iijima Yasuhiro、Daibo Masanori、Kajikawa Kazuhiro
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2021.3061896

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Preliminary Tests of Pancakes From a 12 T REBCO Insulated Solenoid Magnet2021

    • Author(s)
      Vialle Julien、Badel Arnaud、Tixador Pascal、Ciceron Jeremie、Forest Frederick、Pasquet Raphael
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Issue: 5 Pages: 4600805-4600805

    • DOI

      10.1109/tasc.2021.3057837

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Design considerations for practical very high field cryogen-free superconducting magnets: 33 T and beyond2021

    • Author(s)
      Arnaud BADEL
    • Organizer
      Magnet Technology 27
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Toward efficient use of REBCO Coated Conductor’s tensile strength in high field magnet insert: Mechanical Modelling and Experiments2021

    • Author(s)
      Arnaud BADEL
    • Organizer
      Cryogenic Engineering Conference and International Cryogenic Materials Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Field and Voltage transient behavior in REBCO HTS coils : Comparison between Experiments and modelling2020

    • Author(s)
      Arnaud Badel
    • Organizer
      6th Japanese-French High Field & HTS Magnet Technology Research Collaboration Workshop
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Practical High Temperature Superconducting Wires for High Field Magnets2020

    • Author(s)
      Arnaud Badel
    • Organizer
      Asia-pacific Research in High Magnetic Field Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2022-12-28  

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