Construction and demonstration of universal joint techniques for realization of a remountable high-temperature superconducting magnet

我们进行这项研究的目的是实现万向节技术应用于可拆卸的高温超导磁体。本研究的目的有三：1）建立万向接头技术; 2）优化多孔介质冷却系统; 3）设计和制造大型导体及其接头。在冷却系统的研究中，我们证实了金属多孔介质可以抑制薄膜沸腾，这一事实意味着该系统适用于可拆卸磁体。此外，我们制作了一个大规模的导体具有机械接头部分，并实现了100 kA的电流。基于上述结果，我们提出了连接技术和可重装高温超导磁体的概念。

We conducted this research aiming for realization of universal joint techniques to be applied to a remountable high-temperature superconducting magnet. We set three objectives in this research: 1) Establishment of universal joint techniques, 2) Optimization of cooling system using porous media and 3) Design and fabrication of a large-scale conductor and its joint. In the research of the cooling system, we confirmed that metal porous media can suppress film boiling and the fact implies that the system is suitable for the remountable magnet. In addition, we fabricated a large-scale conductor having mechanical joint section and achieved a current of 100 kA. Based on the above results, we demonstrated the concept of joint techniques and a remountable high-temperature superconducting magnet.