高温超导电磁铁磁场衰减时间常数特性研究  

RESEARCH ON THE PROPERTY OF MAGNETIC FIELD DECAY TIME CONSTANT OF HIGH TEMPERATURE SUPERCONDUCTING ELECTROMAGNET

作　　者：王任波[1,2] 陈鑫[1,3] 勾艳凤 

机构地区：[1]西南交通大学牵引动力国家重点实验室超导技术研究所,成都610031 [2]西南交通大学信息科学与技术学院,成都610031 [3]核工业西南物理研究院,成都610031

出　　处：《低温物理学报》2014年第4期294-297,共4页Low Temperature Physical Letters

摘　　要：本文实验研究了励磁线圈使用YBCO超导带材绕制,并通过超导开关形成闭合回路的高温超导电磁铁两级中心磁场的衰减特性.通过测量电磁铁两级中心的磁场,观察改变励磁电流和两极间隙引起的磁场衰减时间常数的变化情况.实验发现:电流值的变化对中心磁场衰减时间常数影响较小,间隙对时间常数的影响较大.The attenuation characteristics of the magnetic field at the center of two YIN20 exciting coils, which are located oppositely and closed by resorting to a superconducting switch, was experimentally studied in the paper. The dependence of the time constant of the magnetic field attenuation upon the exciting current and the gap between the coils was investigated by measuring the central magnetic field between the coils. It was found that, the variation of the exciting current does not bring out a notable change of the time constant, while the gap between the coils has a pronounced influence on the time constant.

关 键 词：高温超导电磁铁 时间常数 YBCO带材 超导开关 

分 类 号：O511.3[一般工业技术—材料科学与工程]