Manufacture and Testing of Pre-prototype HTS Twisted Stack Slotted-Core Cable
Manufacture and Testing of Pre-prototype HTS Twisted Stack Slotted-Core Cable
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DOI：
10.1109/tasc.2024.3356453
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发表时间：
2024-05
影响因子：
1.8
通讯作者：
Shu Tao;Xianfeng Xu;Hua-jun Liu;Yi Shi;Hong-jun Ma;H. Jin;Fang Liu;J. Qin
中科院分区：
文献类型：
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作者：
Shu Tao;Xianfeng Xu;Hua-jun Liu;Yi Shi;Hong-jun Ma;H. Jin;Fang Liu;J. Qin
REBCO带材是第二代高温超导带材，由于其优异的临界电流密度、上级力学性能和电磁特性，在核聚变和高场磁器件中具有广阔的应用前景。提出了一种应用于中国聚变工程试验堆（CFETR）环向场磁体的REBCO基六绕一芯电缆导体（CICC）。本文采用REBCO和铜带叠层的方法，制作了两条1 m长的预绞式槽芯电缆。随后，在77 K和自电场下测试了临界电流特性，并与自洽模型模拟的结果进行了比较。临界电流的计算值与实验值吻合较好，证明了有限元模型的准确性。切割样品后的横截面扫描结果表明，间隙被均匀地填充有焊料，并且制造过程可靠地执行。该研究对高场聚变磁体的未来应用具有重要意义。
REBCO, the second generation of high-temperature superconducting (HTS) tape, has broad application prospects in nuclear fusion and high-field magnetic devices due to its excellent critical current density, superior mechanical properties, and electromagnetic characteristics. The REBCO-based six around one Cable-In-Conduit Conductor (CICC) for application in the toroidal field magnet of the China Fusion Engineering Test Reactor (CFETR) has been proposed. In this paper, two 1-m-long preliminary Twisted Stack Slotted-core Cables (TSSC) stacked by REBCO and copper tapes were fabricated. Subsequently, the critical current characteristics were tested at 77 K and self-field, and compared with the results simulated by the self-consistent model. The calculated values of the critical current are in high agreement with the experimental values, which proves the accuracy of the finite element model. The results of cross-section scanning after cutting the samples indicate that the gaps are uniformly filled with solder and the fabrication process is performed reliably. This study is of great importance for future applications of high-field fusion magnets.