Construction of 50T class large electromagnetic force superconducting magnet technology

• Project/Area Number: 15H03586
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: General applied physics
• Research Institution: Tohoku University
• Principal Investigator: Awaji Satoshi 東北大学, 金属材料研究所, 教授 (10222770)
• Co-Investigator(Kenkyū-buntansha): 津田 理 東北大学, 工学研究科, 教授 (10267411) ; 宮城 大輔 東北大学, 工学研究科, 准教授 (10346413) ; 小黒 英俊 東北大学, 金属材料研究所, 助教 (90567471)
• Research Collaborator: NAGAYA Shigeo 中部電力(株)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000); Fiscal Year 2017: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2016: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2015: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
• Keywords: 高温超伝導 / 電磁力 / 機械特性 / 超伝導マグネット / 高電磁力 / 超伝導材料・素子 / 複合材料・物性

Outline of Final Research Achievements

In this research, we investigated an effect of new reinforcement coil structure “YOROI” in order to overcome a huge electromagnetic stress in the 50T-class high field superconducting magnet from both experimental and numerical simulation approaches. The model coil with the practical volume for insert coil in the high field magnet was made and tested in the high stress state. We found a drastic reduction of the hoop strsss from more than 1000 MPa to 200 MPa even for the practical volume reinforced structures. The obtained results were in agreement with the simulation results. Finally, we successfully design the inner most coil for the 50 T superconducting magnet within the induced hoop stress less than 500 MPa.

Research Products

• [Journal Article] Influence of Bolt Positions and Electrode Structure in Yoroi-Coil Structure on Stress Distribution in an HTS Coil Winding (2018)
  • Author(s): M. Kato , D. Miyagi, M. Tsuda, S. Awaji
  • Journal Title: IEEE Trans. Appl. Supercond. Volume: 28 Issue: 3 Pages: 4600505-4600505
  • DOI: 10.1109/tasc.2017.2780839
  • Peer Reviewed
• [Journal Article] Progress of “Yoroi-Coil Structure” in Mechanical Strength With High Current Density (2017)
  • Author(s): T. Watanabe, S. Nagaya, N. Hirano, S. Awaji, H. Oguro, A. Ishiyama, M. Hojo, M. Nishikawa
  • Journal Title: IEEE Trans. Appl. Supercond. Volume: 27 Pages: 4602305-4602305
  • DOI: 10.1109/tasc.2017.2662600
  • Peer Reviewed
• [Journal Article] First performance test of a 25 T cryogen-free superconducting magnet (2017)
  • Author(s): Awaji Satoshi、Watanabe Kazuo、Oguro Hidetoshi、Miyazaki Hiroshi、Hanai Satoshi、Tosaka Taizo、Ioka Shigeru
  • Journal Title: Supercond. Sci. Technol. Volume: 30 Issue: 6 Pages: 065001-065001
  • DOI: 10.1088/1361-6668/aa6676
  • Peer Reviewed
• [Journal Article] Strengthening Effect of “Yoroi-Coil Structure” Against Electromagnetic Force (2015)
  • Author(s): T. Watanabe, S. Nagaya, N. Hirano, S. Awaji, H.Oguro, Y. Tsuchiya, T. Omura, S. Nimori, T.Shimizu, A. Ishiyama, X. Wang
  • Journal Title: IEEE Trans. Appl. Supercond. Volume: 25 Issue: 3 Pages: 8400204-8400204
  • DOI: 10.1109/tasc.2014.2364675
  • Peer Reviewed
• [Presentation] SUSを用いたYoroi-coil構造の応力低減効果に関する基礎研究 (2017)
  • Author(s): 加藤将大
  • Organizer: 電気学会 超電導機器研究会「超電導応用ならびに材料関連技術」
  • Place of Presentation: 朱鷺メッセ，新潟
  • Year and Date: 2017-01-19
• [Presentation] Learning from R&D and operation of HTS insert coil for high field magnet (2017)
  • Author(s): S. Awaji
  • Organizer: European Conf. on Appl. Supercond. (EUCAS) 2017
  • Int'l Joint Research / Invited
• [Presentation] SUSを用いたYoroi-coil構造の応力低減効果に関する基礎研究 (2017)
  • Author(s): 加藤 雅大，宮城大輔，津田 理，淡路 智
  • Organizer: 電気学会 超電導機器研究会「超電導応用ならびに材料関連 技術」
• [Presentation] Influence of Bolt Positions and Electrode Structure in Yoroi-Coil Structure on Stress Distribution in an HTS Coil Winding (2017)
  • Author(s): M. Kato , D. Miyagi, M. Tsuda, S. Awaji
  • Organizer: European Conf. on Appl. Supercond. (EUCAS) 2017
  • Int'l Joint Research
• [Presentation] Electromechanical analysis of REBCO pancake coils reinforced by an outer-shell structure. (2017)
  • Author(s): S. Awaji, K. Takahashi, T. Okada, M. Kato, D. Miyagi, M. Tsuda
  • Organizer: CHATS on Applied Superconductivity 2017
  • Int'l Joint Research
• [Presentation] ボルト固定や電極を考慮したYoroi-coil構造の応力伝達特性に関する検討 (2017)
  • Author(s): 加藤 雅大，宮城大輔，津田 理，高橋 弘紀，淡路 智
  • Organizer: 2017年度春季低温工学・超電導学会
• [Presentation] 冷却時の熱収縮を考慮したYoroi-coil構造の電磁応力特性 (2017)
  • Author(s): 加藤 雅大，宮城大輔，津田 理，高橋 弘紀，淡路 智
  • Organizer: 電気学会金属・セラミックス/超電導機器行動研究会
• [Presentation] Yoroi-coilの電極構造がHTSコイルの熱応力及び電磁力分布に与える影響 (2017)
  • Author(s): 加藤 雅大，宮城大輔，津田 理，高橋 弘紀，淡路 智
  • Organizer: 2017年度秋季低温工学・超電導学会
• [Presentation] Progress of “Yoroi-coil Structure” in Mechanical Strength with High Current Density (2016)
  • Author(s): T. Watanabe
  • Organizer: Applied Suoercond. Conference 2016
  • Place of Presentation: Denver, CO, USA
  • Year and Date: 2016-09-04
  • Int'l Joint Research
• [Presentation] 1st Performance Test of the 25 T Cryogen-free Superconducting Magnet (2016)
  • Author(s): S. Awaji
  • Organizer: Applied Suoercond. Conference 2016
  • Place of Presentation: Denver, CO, USA
  • Year and Date: 2016-09-04
  • Invited