Evaluation of Irregular Magnetic Field Generated by Screening Current in REBCO Coils for High Accuracy Field

被引：8

作者：

Matsumi, Ayako ^{[1
]}

Ueda, Hiroshi ^{[2
]}

Noguchi, So ^{[3
]}

Wang, Tao ^{[1
]}

Ishiyama, Atsushi ^{[1
]}

Miyazaki, Hiroshi ^{[4
]}

Tosaka, Taizo ^{[4
]}

Nomura, Shunji ^{[4
]}

Kurusu, Tsutomu ^{[4
]}

Urayama, Shinichi ^{[5
]}

Fukuyama, Hidenao ^{[5
]}

机构：

[1] Waseda Univ, Dept Elect Engn & Biosci, Tokyo 1698555, Japan

[2] Osaka Univ, Nucl Phys Res Ctr, Osaka 5670047, Japan

[3] Hokkaido Univ, Grad Sch Informat Sci & Technol, Sapporo, Hokkaido 0600814, Japan

[4] Toshiba Co Ltd, Tokyo 2300045, Japan

[5] Kyoto Univ, Human Brain Res Ctr, Kyoto 6068507, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2016年 / 26卷 / 04期

关键词：

Field homogeneity; high accuracy field; hightemperature superconductors; irregular 27 magnetic field; screening current; three-dimensional electromagnetic field analysis;

D O I：

10.1109/TASC.2016.2535966

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In recent years, research and development of applications for a high field magnet wound with a REBCO tape into nuclear magnetic resonance and magnetic resonance imaging have been carried out. These applications require a very high accuracy field, that is, the spatial uniform and temporally stable field. However, in the REBCO coils, the irregular magnetic field is generated by the screening current, which is remarkably induced by the radial component of the magnetic field in a REBCO tape. Therefore, a nonconventional approach is required for the reduction or correction of the irregular magnetic field generated by the screening current in the stage of design for a high-accuracy-field REBCO coil. The prediction and improvement of the irregular magnetic field generated by the screening current is a serious issue for the development and design of REBCO coils and correction shims. In this study, we numerically investigated the screening current distribution in the winding and the irregular magnetic field generated by the screening current. Moreover, we discuss the irregular effect of the magnetic field generated by the screening current in the REBCO coil from the arrangement of the coil windings and excitation pattern.

引用

页数：5

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