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Development of a 4 K/80 K multiple operating type of GM refrigeration system for the superconducting magnet in Maglev use: cooling characteristics of the nitrogen self-circulated cooling-type radiation shield plate.

[In Japanese. / En japonais.]

Author(s) : NAKAO H., TAKAHASHI M., SANADA Y., et al.

Type of article: Article

Summary

An onboard refrigeration system is one of the most important components in the superconducting magnetically levitated system (Maglev system). At the Yamanashi Maglev Test Line, the operation of the superconducting magnet without a supplement of liquid helium has been achieved by the onboard 4 K Gifford-McMahon/Joule-Thomson refrigerators. As for the liquid nitrogen, it is supplied to the radiation shields periodically. The final target for an onboard refrigeration system for commercial use is to operate magnets with no supplementation of cryogen. To meet these requirements, the authors have been developing a new type of onboard GM refrigeration system that features a combination of a 4 K/80 K multiple-operating type of FM refrigerator and a self-circulated cooling-type radiation shield.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2000-2368
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 34 - n. 2
  • Publication date: 1999/02
  • Document available for consultation in the library of the IIR headquarters only.

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