用于ITER的NbTi超导股线临界电流测试方法

核聚变与等离子体物理 ›› 2008, Vol. 28 ›› Issue (3): 233-237.

用于ITER的NbTi超导股线临界电流测试方法

刘方，翁佩德，武玉，施毅，龙风

(中国科学院等离子体物理研究所，合肥 230031)

收稿日期:2007-08-20 修回日期:2008-02-25 出版日期:2008-09-15 发布日期:2011-03-03
作者简介:刘方(1981-)，女，湖北监利人，2003年毕业于荆州师范学院物理系，现为中国科学院等离子体物理研究所博士研究生，目前从事超导材料性能测试方面的研究。
基金资助:
国家重点基础研究发展规划资助项目(151J00035602)

Method on the critical current test of NbTi superconducting strand for ITER

LIU Fang, WENG Pei-de, WU Yu, SHI Yi, LONG Feng

(Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031)

Received:2007-08-20 Revised:2008-02-25 Online:2008-09-15 Published:2011-03-03

摘要/Abstract

摘要：

介绍了一种用于ITER的NbTi超导股线在不同温度下临界电流测试的方法和装置。该装置包括一孔径为70mm、最高磁场高达16T的背景磁体以及变温杜瓦等系统。对NbTi超导线变温测试设计了二元电流引线。用该系统得到了其NbTi超导股线在不同磁场不同温度下的临界电流，用“Luca”定标律拟合了测试结果，并对测试结果进行了分析。

关键词: 临界电流密度, 上临界磁场, NbTi超导股线, 变温杜瓦

Abstract:

The method and device for the critical current test of NbTi superconducting strand in different temperature are introduced, which mainly contains a background field system and a variable cryostat system. The background field is supplied by a superconducting magnet with a Ø70mm warm bore, in which the current leads are designed to satisfy the NbTi critical current test and the superconducting magnet could produce fields up to 16T. The strand critical current in different field and different temperature has been acquired by this system, the result is fitted with the “Luca” law, and then the performance of the strand can be evaluated integrally.

Key words: Critical current density, Upper critical field, NbTi superconducting strand, Variable temperature cryostat

中图分类号:

O514.2

刘方，翁佩德，武玉，施毅，龙风. 用于ITER的NbTi超导股线临界电流测试方法[J]. 核聚变与等离子体物理, 2008, 28(3): 233-237.

LIU Fang, WENG Pei-de, WU Yu, SHI Yi, LONG Feng. Method on the critical current test of NbTi superconducting strand for ITER[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2008, 28(3): 233-237.