An Effective Cryostat Design of Conduction-Cooled HTS Magnets for a 300-kW-Class Superconducting Induction Heater

作者：Choi Jongho; Lee Chan Kyeong; Hwang Chul Sang; Kim Sung Kyu; Cho Sang Ho; Park Minwon^*; Yu In Keun

来源：IEEE Transactions on Applied Superconductivity, 2018, 28(3): 4601705.

DOI：10.1109/TASC.2017.2772823

• HTS
• induction heating
• cryostat
• no insulation
• cryogenics

A superconducting magnet is operated under cryogenic conditions. To effectively design a cryostat for high-temperature superconducting (HTS) magnets, thermal loads-including conduction and radiation-should be minimized. These heat loads are closely related to the shape of both cryostat and HTS magnets, metal current lead, and cooling method used. A 300-kW-class superconducting induction heater (SIH) is being developed to design an effective cryostat. This paper presents two different cryostat designs (with different shapes) for conduction-cooled HTS magnets. The thermal stability of the HTS magnet was analyzed by considering heat generation and temperature increase and how these were related to quench phenomena. The cooling characteristics of single-and two-stage cryocoolers were analyzed and compared using the finite-element method. The study results will be applied to the fabrication of the 300-kW-class SIH.

• 出版日期2018-4