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Development of current lead for conduction cooled superconducting magnet, manufacturing and testing of oxide superconducting current lead.

[In Japanese. / En japonais.]

Author(s) : KIM T. H., YOKOYAMA S., UMEMURA T., IMAI Y.

Type of article: Article

Summary

The authors have designed and tested superconducting current leads using bismuth-2223 oxide superconducting bulk material. Bismuth-2223 leads were supported by a glass fiber-reinforced plastic which was chosen in consideration of thermal conductivity and thermal expansion. The thermal conductivity of glass-fiber-reinforced plastic (GFRP) was one order of magnitude less than that of bismuth-2223 bulk material. The difference of the thermal expansion-between GFRP and bismuth-2223 bulk material was less than 0.1% in the temperature range from 293 to 20 K. The current lead was cooled by a two-stage Gifford-McMahon cycle refrigerator and operated in a conduction-cooled superconducting magnet successfully.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1997-0039
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 30 - n. 12
  • Publication date: 1995/12
  • Document available for consultation in the library of the IIR headquarters only.

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