Construction of the cryogen-free 23 T hybrid magnet

K. Watanabe, S. Awaji, K. Takahashi, G. Nishijima, M. Motokawa, Y. Sasaki, Y. Ishikawa, K. Jikihara, J. Sakuraba

研究成果: Conference article査読

11 被引用数 (Scopus)


In order to settle problems requiring a large amount of liquid helium and limiting the operation time for a wide bore superconducting magnet of a hybrid magnet, a cryogen-free 23 T hybrid magnet is being constructed at the High Field Laboratory for Superconducting Materials for the first time. An outer compact superconducting magnet is wound with highly strengthened CuNb/Nb3Sn multifilamentary wires and is refrigerated conductively by GM-cryocoolers. The maximum stress value of 210 MPa was designed for the CuNb/Nb3Sn coil. The cryogen-free superconducting magnet will be operated using dual power supplies independently, and has potential to generate central fields of 4.59 T at 198 A for the outer section NbTi coil and 3.41 T at 145 A for the inner section CuNb/Nb3Sn coil. When the cryogen-free 7.5 T superconducting magnet with a 360 mm room temperature bore is combined with an inner 15.5 T water-cooled resistive magnet, a cryogen-free hybrid magnet will achieve 23.0 T in a 52 mm room temperature experimental bore.

ジャーナルIEEE Transactions on Applied Superconductivity
出版ステータスPublished - 2002 3月
イベント17th Annual Conference on Magnet Technology - Geneva, Switzerland
継続期間: 2001 9月 242001 9月 28

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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