Comparison of measurements and electromagnetic field analyses of time-changing magnetic field of an HTS magnet

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K23513
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0302:Electrical and electronic engineering and related fields
• Research Institution: Kyoto University
• Principal Investigator: Sogabe Yusuke 京都大学, 工学研究科, 助教 (40847216)
• Project Period (FY): 2019-08-30 – 2021-03-31
• Keywords: 高温超伝導 / マグネット / 磁界精度 / 磁界測定 / 電磁界解析

Outline of Final Research Achievements

A small-scale high-Tc superconducting magnet consisting of coils wound with coated conductors was experimentally measured under repeated excitations, which simulate the operation pattern required for particle accelerator magnets.
In addition, a precise electromagnetic field analysis model was applied to visualize the behavior of the shielding current, which is an electromagnetic phenomenon inside the coated conductors, during repeated excitations, and to clarify the influence of the shielding current on the magnetic field quality of the magnet. The results were compared with the experimentally measured magnetic field.

Free Research Field

応用超伝導

Academic Significance and Societal Importance of the Research Achievements

高温超伝導技術を加速器用マグネットに応用する際に問題となる変動励磁時の高温超伝導マグネットの発生磁界の実験的・解析的評価は世界初の試みであり、本研究の成果は、将来的な高温超伝導技術の高エネルギー物理学用加速器や医療用加速器への応用の足掛かりとしての学術的意義をもつ。高エネルギー物理学用加速器への高温超伝導マグネットの適用は素粒子研究をさらに進展させるために必要不可欠とされており、医療用加速器への高温超伝導マグネットの適用は重粒子線がん治療をさらに普及させるための必要条件と位置付けられており、本研究は高温超伝導マグネットの特性に関する基礎研究という意味での社会的意義をもつ。