Magnetic Flux Concentrator Using Gd-Ba-Cu-O Bulk Superconductors
Magnetic Flux Concentrator Using Gd-Ba-Cu-O Bulk Superconductors
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DOI：
10.1109/tasc.2009.2018440
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发表时间：
2009-06
影响因子：
1.8
通讯作者：
T. Kiyoshi;S. Choi;S. Matsumoto;T. Asano;D. Uglietti
中科院分区：
文献类型：
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作者：
T. Kiyoshi;S. Choi;S. Matsumoto;T. Asano;D. Uglietti
磁通集中是有效产生强磁场的一项非常重要的技术。我们建议使用的抗磁性的高温超导体（HTS散装），而不是铁磁材料，如Ho和Dy。我们用Gd-Ba-Cu-O块材制作了一个磁场集中器。关键点是沿着圆周沿着开狭缝来抑制电流。集中器在超导磁体的中心用液氦冷却。通过将外部场增加到1.00 T，在集中器的中心处获得3.20 T的磁通密度。在2.00 T的外场下，也获得了5.65 T的场。利用高温超导块材研制了磁透镜。将高温超导块材视为理想导体的数值分析很好地解释了实验结果。
Magnetic flux concentration is a very important technique for the effective generation of high magnetic fields. We propose the use of the diamagnetism of a high T c bulk superconductor (HTS bulk) instead of ferromagnetic materials such as Ho and Dy. We fabricated a magnetic field concentrator using Gd-Ba-Cu-O bulk. The essential point was slits to suppress the current along the circumference. The concentrator was cooled at the center of a superconducting magnet with liquid helium. By increasing the external field to 1.00 T, a magnetic flux density of 3.20 T was obtained at the center of the concentrator. At an external field of 2.00 T, a field of 5.65 T was also obtained. A magnetic lens using HTS bulk was successfully demonstrated. The experimental results were well explained by numerical analyses assuming HTS bulk as a perfect conductor.