ITER 68kA高温超导特大电流引线的冷端漏热

Heat leak of a 68kA HTS current lead for ITER

ITER高温超导电流引线载流能力最大要达到68 kA,其试验件于2008年底加工完成并进行了低温试验,在载流能力、接头电阻、漏热和安全性等关键参数上取得了重要进展。讨论了ITER高温超导电流引线超导段冷端(5 K)漏热的理论值计算,并用热导率积分法进行了低温漏热测试,结果表明理论值与试验值基本吻合,试验件冷端漏热满足ITER国际组要求。

The theory results of module heat leak for ITER High Temperature Superconductor（HTS） current leads were calculated and the heat leak was tested by the method of thermal conductivity integral. The results show that the theoretical value and experimental value are almost undifferentiated, the cold-end heat leak meet the requirements of ITER International Organization.