中小型低温超导磁体中的低温技术

Cryogenic technology for small and medium sized low temperature superconducting magnet

利用超导的零电阻和完全抗磁性,绕制的超导磁体可以较为容易地实现强磁场环境。超导技术和低温技术的发展也为超导磁体的推广应用提供了便利条件。从低温冷却技术、低温绝热技术和低温绝缘技术三个方面,分别阐述了在中小型超导磁体发展过程中先后应用的冷却技术,在低温杜瓦中为了抵消外部漏热影响而采取的低温绝热技术,以及在超导磁体制作过程中采取的低温绝缘技术。

Superconducting magnet can easily produce strong magnetic field by using the zero resistance and perfect dia- magnetism of superconductor. The development of superconducting technology and cryogenic technology also provides convenient conditions for the popularization and application of superconducting magnets. This paper introduced the cryogenic cooling technol- ogy, cryogenic adiabatic technology and cryogenic insulation technology respectively. The cooling technology which was applied in small and medium sized superconducting magnet in the course of the development, the cryogenic adiabatic technology of low tem- perature Dewar was used to offset the impact of external heat leakage, and the cryogenic insulation technology was applied in the process of low temperature superconducting magnet fabrication.