传导冷却无绝缘高温超导二极磁体的研制  

Research and Development of a Conduction-Cooled,No-Insulation HTS Dipole Magnet

作　　者：杜卓越 陈玉泉[1] 吴巍[1] 吴北民[1] 欧贤金 梅恩铭 马力祯[1] 马鹏 李超 Du Zhuoyue;Chen Yuquan;Wu Wei;Wu Beimin;Ou Xianjin;Mei Enming;Ma Lizhen;Ma Peng;Li Chao(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;Huizhou Research Center of Ion Sciences,Huizhou 516003,China;Xi’an Superconducting Magnet Technology Co.,Ltd,Xi’an 710018,China)

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]惠州离子科学研究中心,广东惠州516003 [4]西安聚能超导磁体科技有限公司,陕西西安710018

出　　处：《稀有金属材料与工程》2022年第10期3900-3904,共5页Rare Metal Materials and Engineering

基　　金：新一代强流重离子加速器关键束流物理和核心技术预研(Y910350101);中国科学院战略先导B项(低交流损耗超导磁体,Y815010XD1);国家自然科学基金(11927901);广东省引进创新创业团队计划(2016ZT06G73)。

摘　　要：本工作研制了一台中心磁场为1.5237 T的传导冷却型的无绝缘高温超导(HTS)二极磁体,它主要由室温铁芯、高温超导双饼线圈以及低温恒温器等组成。铁芯的极头采用圆柱形结构,极头之间的距离为120 mm。其中,每个线圈匝数为176匝,磁体的运行电流为286 A。线圈冷体由一台GM制冷机进行冷却,运行温度小于20 K。本工作主要介绍高温超导磁体的设计以及所使用高温超导带材的载流性能,并对无绝缘线圈在装入铁芯前和装入铁芯后的充电和放电特性进行了测试研究。通过测试得到了该磁体充电延迟时间常数,并且测试结果表明,在励磁电流为286 A时,中心磁场强度达到了设计要求。A conduction-cooled and no-insulation high temperature superconducting(HTS)dipole magnet with a 1.5237 T center magnetic field has been developed.It consists of a room temperature iron,HTS double pancake coils and a cryostat.The poles of iron utilize the cylindrical structure and the distance between two poles is 120 mm.Each coil has 176 turns and the nominal operating current is 286 A.The cold mass of coil is cooled by using a GM cryocooler and the operating temperature is below 20 K.This work describes the HTS dipole magnet design and the carrying-current capacity of YBCO tape and reports the charging and discharging test research of the no-insulation coil with and without iron core.The charging delay time constant is acquired by the experiment and the test result shows that the center magnetic field meets design requirement at the operating current of 286 A.

关 键 词：二极磁体 高温超导 无绝缘 传导冷却 

分 类 号：TM265[一般工业技术—材料科学与工程]