Performance of a Mechanical Bridge Joint for 30-kA-class High-temperature Superconducting Conductors
Performance of a Mechanical Bridge Joint for 30-kA-class High-temperature Superconducting Conductors
复制标题
30kA级高温超导导体机械桥接头的性能
DOI：
10.1109/tasc.2013.2291157
复制
发表时间：
2014
影响因子：
1.8
通讯作者：
H. Hashizume
中科院分区：
文献类型：
--
作者：
S. Ito;K. Kawai;Y. Seino;T. Ohinata;Y. Tanno;N. Yanagi;Y. Terazaki;K. Natsume;S. Hamaguchi;H. Noguchi;H. Tamura;T. Mito;A. Sagara;H. Hashizume
在这份报告中，我们提出了分段制造的高温超导（HTS）磁体作为FFHR-d1日光管型聚变反应堆的候选者。FFHR-d1需要在12 T下使用100 kA级超导导体用于一对螺旋线圈。我们制作并测试了两个30 kA级GdBCO导体与桥式机械搭接接头（机械桥式接头）。本文详细介绍了节点截面的设计和试件的试验结果，特别是节点的试验结果。我们在第二个样本中改进了关节区域的几何形状，这是基于我们从第一个样本中得到的结果。第二个样品具有足够低的接头电阻（小于5 nΩ），我们可以向其施加70 kA电流，而不会导致接头处的淬火。它的接头电阻也是可接受的，用于提供运行分段HTS螺旋线圈的冷冻设备所需的电力。
In this report, we propose segment-fabricated high-temperature superconducting (HTS) magnets as candidates for the FFHR-d1 heliotron-type fusion reactor. The FFHR-d1 requires 100-kA-class superconducting conductors used at 12 T for a pair of helical coils. We fabricated and tested two 30-kA-class GdBCO conductors with bridge-type mechanical lap joints (mechanical bridge joints). This report details the design of the joint section and the experimental results of those samples, especially, those of their joints. We improved the geometry of the joint region in a second sample, based on our results from the first. The second sample has sufficiently low joint resistance (less than 5 nΩ), and we could apply 70 kA to it without causing quenching at the joint. Its joint resistance was also acceptable for providing the electric power required to run the cryoplant for the segmented HTS helical coils.