STABILITY OF CABLE-IN-CONDUIT SUPERCONDUCTORS FOR LARGE HELICAL DEVICE

被引:23
作者
Takahata, K. [1 ]
Mito, T. [1 ]
Satow, T. [1 ]
Yanagi, N. [1 ]
Sakamoto, M. [1 ]
Yamada, S. [1 ]
Nishimura, A. [1 ]
Yamamoto, J. [1 ]
Motojima, O. [1 ]
Mizumaki, S. [2 ]
Nakamoto, K. [2 ]
Uchida, T. [2 ]
Wachi, Y. [2 ]
Shimada, M. [2 ]
Itoh, S. [2 ]
Ioka, S. [2 ]
机构
[1] Natl Inst Fus Sci, Nagoya, Aichi 46401, Japan
[2] Toshiba Corp, Chiyoda Ku, Tokyo 100, Japan
关键词
D O I
10.1109/77.233755
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 stability of cable-in-conduit superconductors has been experimentally investigated as a program of poloidal field coils for the Large Helical Device (LHD) project. On the excitation tests for the demonstration coil (TOKI-PF), we had found several problems on the stability of a cable-in-conduit conductor; strand movements, current distribution and current transition among the strands. Consequently, a new conductor was designed and fabricated focused on the stability. As a result of a zero-dimensional stability analysis, it was found that the conductor has high stability margin, 5x 10(5)J/m(3), at the design condition of 20.8 kA and 6.5 T. Current transfer performance after partial quenching has been investigated by a short sample test. In this paper, effects of the current transfer among the strands on the conductor stability will also be discussed.
引用
收藏
页码:511 / 514
页数:4
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