Characterization of High Jc Nb3Sn Strands for the Series-Connected Hybrid Magnet

被引：10
作者：
Lu, Jun [1 ]
Han, Ke [1 ]
Walsh, Robert P. [1 ]
Dixon, Iain [1 ]
Ferrera, Alexandre [2 ]
Seeber, Bernd [2 ]
机构：
[1] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA
[2] Univ Geneva, Inst Appl Phys, CH-1211 Geneva 4, Switzerland
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2009年 / 19卷 / 03期
基金：
美国国家科学基金会;
关键词：
Critical current; Nb3Sn; strain; CURRENT DENSITY; CONDUCTOR;
D O I：
10.1109/TASC.2009.2018365
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The series-connected hybrid magnet under construction at the National High Magnetic Field Laboratory uses cable-in-conduit-conductor with high J(c) Nb3Sn strands. One of the candidate Nb3Sn strands is made by the restacked-rod process with a nominal J(c) of similar to 2400 A/mm(2). We characterized the J(c) as a function of axial and transverse strain, magnetic field and temperature. The J(c)-strain measurements have been carried out by a straight pull device and two different Walters spring probes. In addition, we have investigated the effect of the Nb3Sn reaction heat treatment temperature on the irreversible strain. We found that the irreversible strain increases with the heat treatment temperature. Our results indicate that, in addition to its high J(c), this type of strand has moderate strain sensitivity, therefore is suitable for the application of the series-connected hybrid magnet.
引用
收藏
页码：2615 / 2618
页数：4
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