超导Wiggler磁体用高温超导电流引线的设计与实验  

Design and experiment of HTS current leads for superconductingWiggler magnets

作　　者：张海峰 丁怀况[1,2,3,4] 章学华[1,2,3,4] 匡光力 李为民[5] 杨士葛 曾环[1,2,3,4] Zhang Haifeng;Ding Huaikuang;Zhang Xuehua;Kuang Guangi;Li Weiming;Yang hige;Zeng Huan(The 16th Institute of CETC,Hefei 230043,China;Anhui Vacree Technologies Co.,Ltd,Hefei 230088,China;Anhui Provincial Key Laboratory of Rare Gas Separation Technology,Hefei 230088,China;Anhui Cryogenic and Vacuum Engineering Research Center,Hefei 230088,China;University of Science and Technology of China,Hefei 230026,China;High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China.)

机构地区：[1]中国电子科技集团公司第十六研究所,合肥230043 [2]安徽万瑞冷电科技有限公司,合肥230088 [3]稀有气体分离技术安徽省重点实验室,合肥230088 [4]安徽省低温与真空工程研究中心,合肥230088 [5]中国科学技术大学,合肥230026 [6]中国科学院合肥物质科学研究院强磁场科学中心,合肥230031

出　　处：《低温与超导》2024年第5期25-30,共6页Cryogenics and Superconductivity

基　　金：安徽省科技重大专项项目(18030901038)资助。

摘　　要：通过升级改造了合肥国家同步辐射实验室超导Wiggler磁体的低温系统,将原先低温系统的铜电流引线升级为高温超导电流引线,同时采用GM制冷机对高温超导电流引线进行传导冷却。在完成设计和首次降温实验、通电实验后,对实验数据进行分析,对低温系统的制冷量进行分配调整,用于改善低温系统的安全运行裕度。调整后的实验结果证明,高温超导电流引线的降温时间缩短了0.7小时,高温超导段的最低温度降低了7 K,460 A电流引线的最大运行电流提升了19%,20 A电流引线的最大运行电流提升了30%。By upgrading and transforming the cryogenic system of the superconducting Wiggler magnet at the Hefei National Synchrotron Radiation Laboratory.The copper current lead of the original cryogenic system was upgraded to the high-temperature superconducting current lead,and the GM cryocooler was used to cool the high-temperature superconducting current leads.After completing the design,the first cooling experiment,and the electrification experiment,the experimental data was analyzed,and the cooling capacity of the cryogenic system was allocated and adjusted to improve the safe operation margin of the cryogenic system.The adjusted experimental results show that the cooling time of the high-temperature superconducting current lead is shortened by 0.7 hours,the cooling temperature is reduced by 7 K,the maximum operating current of the 460 A current lead is increased by 19%,and the maximum operating current of the 20 A current lead is increased by 30%.

关 键 词：高温超导 电流引线 超导磁体 GM制冷机 传导冷却 

分 类 号：TM26[一般工业技术—材料科学与工程]