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Development of MgB2 superconducting magnet for particle detectors

Research Project

Project/Area Number 15K05111
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

MAKIDA Yasuhiro  大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (30199658)

Co-Investigator(Kenkyū-buntansha) 石原 信弘  大学共同利用機関法人高エネルギー加速器研究機構, その他部局等, 名誉教授 (50044780)
川井 正徳  大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 技師 (50391735)
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsニホウ化マグネシウム / 超伝導特性の劣化 / 歪 / 変形 / 撚線加工 / 変形による超伝導特性劣化 / マグネシウムと銅の反応 / ニオブバリヤ―の破れ / 超伝導特性劣化 / 曲げひずみ / 二ホウ化マグネシウム超伝導線 / 歪特性 / 超伝導特性
Outline of Final Research Achievements

To develop a electromagnet wound with MgB2 superconductor, we experimentally studied about degradation of superconductive characteristic, critical current, in the conductor during cabling and winding processes by making some trial cables and coils. We measured damaged critical current in commercial available MgB2 superconductors, which are bend or indented artificially. It has been measured that degradation appears over bending strain of about 3 % or depression of about 8 %. Observing internal structures of the damaged conductor shows that the degradation is due to creation of MgCu2 through broken Nb barrier surrounding Mg and BH2 ingredients, where MgB2 can not be created.

Academic Significance and Societal Importance of the Research Achievements

2001年に日本で発見されたニホウ化マグネシウム超伝導体は、原料コストが安価で、液体ヘリウムを用いなくても超伝導状態になり、線材として加工が容易なため、電磁石への応用が試みられている。課題としては(1)電流密度を実用化されている超伝導材(ニオブチタン)並みに高めること、(2)電磁石製作工程での超伝導特性劣化(臨界電流値の低下)を克服することが挙げられており、(2)に関して本研究は取り組んだ。劣化をしない限界値や劣化の背景を明らかにできた。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (6 results)

All 2019 2018 2017 2016

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (4 results)

  • [Journal Article] Investigation on IC Degradation of MgB2 Rutherford Cables by Deformation During Cabling Process2019

    • Author(s)
      M. Jimbo, N. Kamibayashi, Y. Kuwabara, T. Yagai, T. Takao, T. Shintomi, Y. Makida et al.
    • Journal Title

      IEEE Transactions on Applied Superconductivity ( Early Access )

      Volume: 印刷中 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2019.2911309

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Superconducting Properties of a Prototype Pancake Coil Using a MgB2 Rutherford-Type Stranded Conductor2018

    • Author(s)
      M. Tomita, T. Onji , A. Ishihara, Y. Kobayashi, Y. Fukumoto, S. Mizuno, T. Yagai, T. Takao, T. Komagome, K. Tsukada, N. Hirano, Y. Makida et al.
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 28 - 3 Issue: 3 Pages: 5700604-5700604

    • DOI

      10.1109/tasc.2018.2797908

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Ic劣化の抑制を目指すMgB2ラザフォードケーブルの開発状況2018

    • Author(s)
      槙田康博
    • Organizer
      2018年度秋季低温工学・超電導学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] MgB2素線の熱処理前断面変形による臨界電流特性劣化の解明2018

    • Author(s)
      槙田康博(上林昌弘)
    • Organizer
      2018年度秋季低温工学・超電導学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] MgB2ラザフォードケーブルによるダブルパンケーキコイル試作2017

    • Author(s)
      槙田康博
    • Organizer
      低温工学・超電導学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Critical Current Properties of MgB2 Conductors Depending on Strains Caused by Cabling Processes2016

    • Author(s)
      ANDO Kennosuke
    • Organizer
      1st Asian ICMC & CSSJ 50th Anniversary Conference
    • Place of Presentation
      金沢歌劇座(石川県、金沢市)
    • Year and Date
      2016-11-08
    • Related Report
      2016 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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