Development of strain-applying apparatus for evaluation of ITER Nb3Sn strand

被引：14

作者：

Nunoya, Yoshihiko ^{[1
]}

Isono, Takaaki ^{[1
]}

Koizumi, Norikiyo ^{[1
]}

Hamada, Kazuya ^{[1
]}

Nabara, Yoshihiro ^{[1
]}

Okuno, Kiyoshi ^{[1
]}

机构：

[1] JAEA, Ibaraki, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2007年 / 17卷 / 02期

关键词：

conductor; fusion; ITER; Nb3S n; strain; superconductivity;

D O I：

10.1109/TASC.2007.899600

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：

Japan Atomic Energy Agency has successfully developed Nb3Sn strand which fulfills ITER requirements. Because Nb3Sn is very susceptible to external strain which reduces critical current, critical temperature, and critical field, it is necessary to evaluate strain dependency of these Nb3Sn strands to confirm an ITER conductor design. An apparatus to measure the strain dependency was newly developed. It has a horseshoe-shaped ring and a strand is soldered on its outer surface. This shape produces uniform axial compressive or tensile strain along strand length by expanding or closing the opening of the ring. Critical current can be measured by the apparatus under a magnetic field up to 15T, a temperature range of 4.2K to 15K, and strains. The maximum allowable current is about 300A. The details of the apparatus and results of strand characterization are presented.

引用

页码：2588 / 2590

页数：3

共 8 条

[1] A probe for investigating the effects of temperature, strain, and magnetic field on transport critical currents in superconducting wires and tapes [J].