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11 T liquid helium-free superconducting magnet.

Author(s) : WATANABE K., AWAJI S., SAKURABA J., WATAZAWA K., HASEBE T., JIKIHARA K., YAMADA Y., ISHIHARA M.

Type of article: Article

Summary

An 11 T liquid helium-free superconducting magnet designed at 6 K in vacuum using high temperature superconducting current leads was developed. The niobium-titanium/niobium(3)-tin coil was conductively cooled down from room temperature to 4.1 K in 40 hours by two 4-K Gifford-McMahon cryocoolers. In a performance test, the coil temperature rose to 6.8 K for the inner niobium(3)-tin coil and 5.9 K for the outer niobium-titanium coil, while sweeping the field at 5 A/min. A central field of 10.7 T in a 52 mm room temperature bore was generated at an operating current of 149 A. Holding the field at 10.5 T was achieved continuously for 24 hours at a constant coil temperature of 4.8 K.

Details

  • Original title: 11 T liquid helium-free superconducting magnet.
  • Record ID : 1998-1475
  • Languages: English
  • Source: Cryogenics - vol. 36 - n. 12
  • Publication date: 1996/12

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