Designs and tests of shaking coils to reduce screening currents induced in HTS insert coils for NMR magnet

Kazuhiro Kajikawa, Gwendolyn V. Gettliffe, Yong Chu, Daisuke Miyagi, Thibault P. Lécrevisse, Seungyong Hahn, Juan Bascuñán, Yukikazu Iwasa

研究成果: Contribution to journalArticle査読

28 被引用数 (Scopus)

抄録

Two types of shaking coils are focused on reducing screening currents induced in solenoid coils wound with high-temperature superconducting (HTS) tapes. One is a pair of copper shaking coils coaxially located inside and outside the HTS coil to apply an ac magnetic field in the axial direction. The other is an HTS shaking coil with notch located only outside the HTS coil to minimize the radial components of local ac fields applied to windings of the HTS coil as small as possible. It is found that the copper shaking coils yield the allowable amount of power dissipation in liquid helium. The effectiveness of the HTS shaking coil to reduce screening-current-induced fields generated by another magnetized HTS coil is also experimentally validated in liquid nitrogen using a commercially available coated conductor with narrow width.

本文言語英語
論文番号6926807
ジャーナルIEEE Transactions on Applied Superconductivity
25
3
DOI
出版ステータス出版済み - 6 1 2015

All Science Journal Classification (ASJC) codes

  • 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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