铝稳定体卢瑟福缆剩余电阻率的测量  

Measurement of residual resistivity ratio of aluminum-stabilized rutherford cable

作　　者：佟新宇 赵玲[2] 孙淑凤[1] 谢宗泰 王立[1] 朱自安[2,3] 刘旭洋 王美芬 Tong Xinyu;Zhao Ling;Sun Shufeng;Xie Zongtai;Wang Li;Zhu Zian;Liu Xuyang;Wang Meifen(School of Energy and Environmental Engineering,University of Science and Technology,Beijing 100083,China;Institute of High Energy Physics Chinese Academy of Sciences,Beijing 100049,China;University of Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]北京科技大学能源与环境工程工程学院,北京100083 [2]中国科学院高能物理所,北京100049 [3]中国科学院大学,北京100049

出　　处：《低温工程》2018年第5期39-44,共6页Cryogenics

摘　　要：介绍了铝稳定体卢瑟福缆的测量背景。对比了目前测量金属剩余电阻率的3种方法,确定测量电缆使用定点法和曲线法。通过实验,得出国产化的铝稳定体卢瑟福缆中,铝的剩余电阻率为380,制作超导线所用高纯铜的剩余电阻率(RRR,Residual Resistance Ratio)值为256,未绞缆的NbTi/Cu超导线的RRR值为177,绞缆后超导线的RRR值为110,比未绞缆的超导线RRR值降低了67,而覆铝后超导线的RRR值会增加到220。超导线的RRR值已达要求,而铝的RRR值还比较低,与国际领先水平还有较大差距,下一步的重点是改进覆铝工艺,以提升其RRR值。The measuring background of the aluminum-stabilizer rutherford cable is introduced. The existing residual resistivity test methods are compared,the RRR（ Residual Resistance Ratio） of the cable is measured by the fixed temperature method and the curve method. Through experiments,the RRR of domestically produced aluminum stabilizer rutherford cable was obtained. The test results show that the RRR of high purity aluminium and high pure copper are 380 and 256,respectively. The twisting NbTi/Cu superconductors have a RRR of 110,with a 67 decrease compared to the original cable,which RRR is 177. The RRR of Aluminum covered twisting cable is 220. The RRR of the superconducting wire has reached the requirement,while the RRR of the aluminum is still relatively low,there is still a big gap with the international advanced level.The next step is to improve the aluminum cladding process to increase its RRR value.

关 键 词：铝稳定体 卢瑟福缆 剩余电阻率 定点法 曲线法 

分 类 号：TB663[一般工业技术—制冷工程]