Mechanical and superconducting properties of Bi-2223 tape for 19 T cryogen-free superconducting magnet

被引:8
作者
Nishijima, G [1 ]
Awaji, S
Watanabe, K
Hiroi, K
Katagiri, K
Kurusu, T
Hanai, S
Takano, H
机构
[1] Tohoku Univ, Mat Res Inst, High Field Lab Superconducting Mat, Sendai, Miyagi 9808577, Japan
[2] Iwate Univ, Fac Engn, Morioka, Iwate 0208551, Japan
[3] Toshiba Co Ltd, Yokohama, Kanagawa 2300045, Japan
关键词
critical current; cryogen-free superconducting magnet; high-T-c superconducting coil; mechanical properties;
D O I
10.1109/TASC.2004.830531
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
We have started a new project to develop a cryogen-free 19 T superconducting magnet with a 52-mm room temperature bore. The magnet is designed to be consisting of three sections, i.e., the innermost high-T-c superconducting coil section, the middle Nb3Sn section and the outer NbTi section. The electromagnetic hoop stress is applied to the superconducting wire due to the magnetic field generation. It is described to the products of magnetic field, transport current density, and winding radius. The maximum electromagnetic stress is estimated to exceed 200 MPa in the middle Nb3Sn section and 50 Pa in the high-T-c section. It is important to explore the mechanical characteristics to design the magnet. In this study, mechanical properties, i.e., stress-strain characteristics and stress dependence of the critical current, were investigated for oxide superconducting tapes.
引用
收藏
页码:1210 / 1213
页数:4
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