2017 Fiscal Year Final Research Report
Development of pulsed field magnetization technique for MgB2 superconducting bulk
Project/Area Number |
15K04646
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Applied materials
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Research Institution | Iwate University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
内藤 智之 岩手大学, 理工学部, 准教授 (40311683)
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Research Collaborator |
Ainslie Mark D. Cambridge大学, 研究員
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Project Period (FY) |
2015-04-01 – 2018-03-31
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Keywords | バルク超電導体 / 着磁現象 / 機械的強度 / シミュレーション / 磁気レンズ / 捕捉磁場 |
Outline of Final Research Achievements |
The trapped field magnet using MgB2 and REBaCuO superconducting bulks has been intensively investigated for the practical applications. In this study, we have performed the three studies for magnetizing subjects. First, the fabrication techniques of the high-quality large MgB2 bulk was established and a record-high trapped field of 1.1 T at 16 K was achieved. Second, the simulation techniques for the mechanical stress during magnetizing process have been established and hoop stress of the disk bulk reinforced by metal ring was calculated to prevent the mechanical fracture. Third, a new concept of a hybrid trapped field magnet lens (HTFML) was proposed, in which REBaCuO magnetic lens and MgB2 (case-1) cylinder or REBaCuO (case-2) cylinder were used. As a result, the HTFML could reliably generate a concentrated magnetic field Bc=4.73 T with the external magnetizing field Bapp=3 T in the ‘case-1’, and a higher Bc=13.49 T with higher Bapp=10 T in the ‘case-2’, respectively.
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Free Research Field |
応用物理学
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