高熵合金凝固用高精度低温超导磁体的研制  

FABRICATION OF A CONDUCTION COOLED SUPERCONDUCTING MAGNET FOR THE SOLIDIFICATION OF HIGH-ENTROPY ALLOYS

作　　者：梁琛 李超 闫果[2,3] 冯勇[1,2] 张平祥 LIANG Chen;LI Chao;YAN Guo;FENG Yong;ZHANG Ping-xiang(Xi＇ an Superconducting Magnet Technology Co., Ltd,Xi＇ an 710018, China;Western Supelonducting Materials Technology Co.,Ltd,Xi＇ an 710018, China;Northwes Institute for Non-ferrous Metal Research, Xi＇ an 710016, China)

机构地区：[1]西安聚能超导磁体科技有限公司,西安710018 [2]西部超导材料科技股份有限公司,西安710018 [3]超导材料制备国家工程实验室,西安710018

出　　处：《真空与低温》2018年第2期96-99,共4页Vacuum and Cryogenics

摘　　要：根据高熵合金凝固用高精度低温超导磁体的技术要求,研制1套磁场可达10 T,室温直径为100 mm的高精度传导冷却超导磁体。该超导磁体由1组Nb3Sn和4组Nb Ti线圈组成,同时设计并制造了直径650 mm、高612 mm的杜瓦。为降低磁体运行过程中漏热,采用1对150 A高温超导电流引线为磁体供电。磁体总质量388 kg,通过1台1.5 W@4.2 K的G-M制冷机作为冷源,经过62 h,将超导磁体冷却至2.92 K,磁体正常运行电流119.95 A,工作磁场10.001 T,励磁过程中未发生失超,运行稳定。同时,对强磁场下高熵合金的凝固进行实验研究,详细介绍了该超导磁体装置的设计、制造和测试过程。According to the tectmical requirements, a conduction cooled superconducting magnet with the center mag- netic field of 10 T and room bore size of 100 nun was designed and fdbricated. The magnet consists of 1 set of NbTi coil and 4 sets of NbSn coils accommoted by a cryostat with an outer diameter of 650 nun and height of 612 mm The mag- net system was cooled by a 1.5 W@4.2 K G-M ciNocooler from room temperature to 2.92 K in 62 hom-s and the total weight of the system is 388 kg. The magnet was tested and reached the maximum operating current of 119.95 A, COITe- sponcling to a center magnetic field of 10.001 T without quenching.

关 键 词：超导磁体 电磁设计 低温测试 高熵合金 

分 类 号：TB66[一般工业技术—制冷工程]