高温超导CORC缆线交流磁化率测试  

Measurement of AC susceptibility of HTS CORC cables

作　　者：赵凯 赖凌峰 陈笃行[2] 顾晨[3] Zhao Kai;Lai Lingfeng;Chen Duxing;Cu Chen(Beijing Easfore Supercondueing Technology Co.,Lid Bejing 100085,China;Departament de Fisica,Univeritat Autonoma de Barelona,Barelona 08193,Spain;Department of Physics,Tsinghua University,Beijng 100084,China)

机构地区：[1]北京原力辰超导技术有限公司,北京100085 [2]巴塞罗那自治大学物理系,巴赛罗那08193 [3]清华大学物理系,北京100084

出　　处：《低温与超导》2022年第9期28-33,共6页Cryogenics and Superconductivity

基　　金：国家自然科学基金(52107032);中国科学院战略性先导科技专项(XDB25020200)资助。

摘　　要：CORC型缆线是目前比较流行的超导集束缆线结构之一。介绍了使用磁矩法测量CORC缆线磁化率,该方法利用亥姆霍兹线圈产生最大0.1 T、直径8 cm匀场区的交变外磁场,使用采集线圈测量样品的磁矩得到交流磁化率。通过测量铜棒样品验证该装置的可行性,并测量不同层数、不同宽度的超导带绕制的CORC缆线的交流磁化率。与超导单带磁化率对比,随着磁场增大单带的实部磁化率曲线上升,而CORC缆线的实部曲线小磁场下趋于平稳;随着外场频率增加CORC缆线的虚部磁化率曲线比单带上升更多。CORC cables is one of the popular superconducting cluster cable structures.The measurement of magnetic susceptibility of CORC cables was introduced using the magnetic moment method. In this method, Helmholtz coil was used to generate an alternating external magnetic field with a maximum of 0.1 T and a diameter of 8 cm in uniform field. Measurement coil was used to measure the magnetic moment of the sample to obtain the AC susceptibility. The feasibility of the device was verified by measuring copper bar sample, and the magnetic susceptibility of CORC wires wound with different layers and widths was measured. Compared with the magnetic susceptibility of superconducting single tape, the real part of magnetic susceptibility curve of single band increases with the increase of magnetic field, while the real part curve of CORC cables tends to be stable under the small magnetic field. The imaginary part of magnetic susceptibility curve of the CORC cables increases more than that of the single tape as the external field frequency increases.

关 键 词：高温超导缆线 CORC缆线 磁化损耗 交流磁化率 

分 类 号：TM26[一般工业技术—材料科学与工程]