金属芯尺寸对CORC缆REBCO带材临界性能影响  

Effect of metal core size on critical performance of REBCO tape for CORC cable

作　　者：肖冠宇 刘方 金环 周超 秦经刚 刘华军 张新涛 胡立标[1,2] Xiao Guanyu;Liu Fang;Jin Huan;Zhou Chao;Qin Jinggang;Liu Huajun;Zhang Xintao;Hu Libiao(Institute of Plasma Physics,Chinese Academy of Science,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026

出　　处：《低温与超导》2020年第3期35-36,46,共3页Cryogenics and Superconductivity

基　　金：国家青年自然科学基金(51807193);中国科学院战略先导科技专项(XDB25020200)资助。

摘　　要：为推动CORC缆应用于CICC导体及高场磁体,研究金属芯尺寸对CORC缆上的ReBCO带材临界性能影响具有一定的重要性。手工绕制了多根单层CORC缆样品,研究了在77 K和自场条件下,芯部尺寸对上海超导生产的YBCO带材的临界电流的影响。随着缆芯尺寸减小,YBCO带材的临界电流产生衰退现象。当缆芯尺寸低于4.3 mm时,临界电流明显下降。当缆芯尺寸为4 mm时,临界电流为127 A,n值为32.5,临界性能衰退了21%。In order to promote the application of the ReBCO conductor on round core(CORC)cable to cable in conduit conductors(CICC)and high field magnets,it is of great importance to study the influence of metal core size on the critical performance of ReBCO tape for CORC cable.A number of single-layer CORC cable samples were hand-wound.The effects of the core size on critical current of YBCO tape for CORC cable were investigated at 77 K and in magnetic self-field.As the core size decreases,the critical current of the YBCO tape degenerates.When the cable core size is less than 4.3 mm,the critical current drops significantly.When the core size is 4mm,the critical current is 127 A,the n value is 32.5,and the critical performance is reduced by 21%.

关 键 词：YBCO CORC缆 缆芯直径 载流性能 

分 类 号：TL622[核科学技术—核技术及应用]