Performance of Trapped Magnetic Field in Superconducting Bulk Magnets Activated by Pulsed Field Magnetization

被引：13

作者：

Oka, T. ^{[1
]}

Seki, H. ^{[1
]}

Ogawa, J. ^{[1
]}

Fukui, S. ^{[1
]}

Sato, T. ^{[1
]}

Yokoyama, K. ^{[2
]}

机构：

[1] Niigata Univ, Nishi Ku, Niigata 9502181, Japan

[2] Ashikaga Inst Technol, Ashikaga, Tochigi 3268558, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2011年 / 21卷 / 03期

关键词：

Bulk superconductor; magnetic field generator; refrigerator; trapped field magnet;

D O I：

10.1109/TASC.2010.2091236

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：

Melt-textured large grain high temperature superconducting materials have a characteristic feature so as to trap the magnetic fields applied from outside, and act as quasi-permanent magnets yielding intense magnetic fields which reach values of several T in the open space above the sample surface. The performance of the magnets has been precisely investigated when intense pulsed magnetic fields generated by feeding currents up to 9.12 kA to the pulse coil settled around a cylindrical bulk magnet. In the experiment a condenser bank with large capacitances of 40-120 mF has been adapted to apply the magnetic fields up to 8.44 T to the Gd-Ba-Cu-O-based bulk magnet with the size of 30 mm in diameter. The trapped field has reached 3.28 T on the sample surface. The magnetic fields successively penetrating the sample in the process called the IMRA method have been investigated with respect to the behavior of the magnetic flux in the sample.

引用

页码：3356 / 3359

页数：4

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