Trapped Field Characteristics of Stacked YBCO Thin Plates for Compact NMR Magnets: Spatial Field Distribution and Temporal Stability.
Trapped Field Characteristics of Stacked YBCO Thin Plates for Compact NMR Magnets: Spatial Field Distribution and Temporal Stability.
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DOI：
10.1109/tasc.2010.2043832
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发表时间：
2010-06-01
期刊：
影响因子：
--
通讯作者：
Iwasa Y
中科院分区：
文献类型：
--
作者：
Hahn S;Kim SB;Ahn MC;Voccio J;Bascuñán J;Iwasa Y
本文介绍了一堆用于紧凑核磁共振磁体的方形YBCO薄膜板的捕获场特性的实验和分析结果。每块YBCO板，40mm × 40mm × 0.08 mm，在其中心有一个直径25mm的孔。总共使用了500块堆叠板来构建一个40毫米长的磁铁。在液氮浴中测量了其捕获场的空间分布和时间稳定性。对测量结果和分析结果进行了比较，讨论了不饱和镍衬底的捕获场特性和YBCO板中电流分布不均匀对捕获场特性的影响。
This paper presents experimental and analytical results of trapped field characteristics of a stack of square YBCO thin film plates for compact NMR magnets. Each YBCO plate, 40 mm × 40 mm × 0.08 mm, has a 25-mm diameter hole at its center. A total of 500 stacked plates were used to build a 40-mm long magnet. Its trapped field, in a bath of liquid nitrogen, was measured for spatial field distribution and temporal stability. Comparison of measured and analytical results is presented: the effects on trapped field characteristics of the unsaturated nickel substrate and the non-uniform current distribution in the YBCO plate are discussed.