高温超导磁体低温氦气冷却系统设计及性能试验

Design and performance test of the cryogenic helium cooling system for HTS magnets

高临界温度的超导材料的出现,使得使用高于液氦温度的低温氦气来冷却高温超导磁体的冷却系统有着广泛的应用前景。设计了一种高温超导磁体低温氦气循环冷却系统,并进行了相关性能试验。结果表明,系统使用温度范围广,可对多种不同临界温度的高温超导磁体进行冷却;系统控温精度较高,为高温超导磁体在特定温度下的性能研究提供了条件;指出了影响系统性能的关键问题。

With the high critical temperature superconducting materials appearing, the cooling system for HTS magnets which use cryogenic helium as cooling medium has a broad application prospects. Of course, the temperature of cryogenic helium is high- er than the temperatue of liquid helium. The cryogenic helium cooling system for HTS magnets was designed and the related per- formance tests were conducted. The results show that the system has a wide temperature range, so a variety of HTS magnets with different critical temperature can use the system. The temperatue of the system can be controlled and the conditions for the per- formance study of HTS magnets at a certain temperature were provided. The key problem that affects the system performance was proposed.