The rare-earth barium copper oxide (REBCO) tape has a good development prospect in the application of large high field magnets at low temperatures because of its high critical current density and excellent mechanical and electro-magnetic properties. In recent years, some superconducting conductors based on REBCO tapes have been proposed, such as cable-in-conduit conductor (CICC) designed based on TSTC and CORC. In this paper, a type of preliminary CICC model is proposed and fabricated based on the quasi-isotropic strand. The critical current characteristics of the model and the contact resistance of copper terminals are analysed, respectively. Firstly, the critical current of a partially-filled superconducting CICC is calculated by self-consistent model at 77 K/self-field. Then, a preliminary CICC experimental sample is made and tested to measure its critical current. Finally, the critical current of a full-size superconducting CICC under different magnetic induction intensities and external magnetic field orientations at 77 K and 4.2 K are also calculated, respectively. The results provide another CICC candidate for the application of large high field magnet in the future.

中文翻译：

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准各向同性线材初步CICC模型临界电流数值分析与实验

稀土氧化钡铜（REBCO）带具有较高的临界电流密度和优异的机械和电磁性能，在大型低温高场磁体应用方面具有良好的发展前景。近年来，一些基于REBCO带的超导导体被提出，例如基于TSTC和CORC设计的电缆套管导体（CICC）。在本文中，提出并制作了一种基于准各向同性链的初步CICC模型。分别分析了模型的临界电流特性和铜端子的接触电阻。首先，部分填充的超导 CICC 的临界电流是通过自洽模型在 77 K/自场下计算的。然后，制作并测试了CICC初步实验样品，测量其临界电流。最后，还分别计算了 77 K 和 4.2 K 下全尺寸超导 CICC 在不同磁感应强度和外磁场方向下的临界电流。该结果为未来大型高场磁体的应用提供了另一个CICC候选。