Quench Detection Performance of Lowerature Superconducting Quench Detectors for REBCO Tape in Magnetic Fields

Shin Hasegawa, Satoshi Ito, Gen Nishijima, Hidetoshi Hashizume

研究成果: Article査読

1 被引用数 (Scopus)

抄録

A quench detection method using a lowerature superconducting quench detector (QD) has been proposed to protect rare-earth barium copper oxide (REBCO) coils at temperatures below 20 K in magnetic fields. In this study, we first conducted an experiment at 4.2 K in 0-9 T using a locally- degraded REBCO tape and Nb-Ti QDs (Nb-Ti/Cu, Nb-Ti/Cu-Ni). Quick quench detection before thermal runaway of the REBCO tape was demonstrated by the Nb-Ti/Cu-Ni QD in 0-9 T, whereas Nb-Ti/Cu QD exhibited quick quench detection only at 9 T. Furthermore, we numerically evaluated the quench detection time of Nb-Ti QDs attached to a REBCO tape with local degradation at 4.2 K in 0-9 T. The simulation reproduced the experimental results. Moreover, the contact resistance between the REBCO tape and QD should be lower than 1.0 × 10-3 m2K/W for quick quench detection.

本文言語English
論文番号9368969
ジャーナルIEEE Transactions on Applied Superconductivity
31
5
DOI
出版ステータスPublished - 2021 8

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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