Share

Cryogenic system for the large helical device (LHD).

[In Japanese. / En japonais.]

Author(s) : MITO T., SATOH S., MAEKAWA R.

Type of article: Article

Summary

The cryogenic system for the LHD consists of a helium refrigerator/liquefier, the LHD cryostat in which the superconducting helical coils, poloidal coils and coil supporting structures are installed, as well as the peripheral equipment such as superconducting bus lines, control-valve boxes and cryogenic transfer line. The helium refrigerator/liquefier has cooling capacities of 5.65 kilowatts at 4.4 K and 20.6 kilowatts from 40 to 80 K, and 650 liter/h liquefaction. Three different cooling schemes are utilized for each cooling object: a pool boiling for the helical coils (cold mass of 240 t), a forced flow of supercritical helium for the poloidal coils (182 t), a forced flow of two-phase helium for the coil supporting structure (390 t) and the superconducting bus lines (total length of 463 m).

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1999-0006
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 32 - n. 11
  • Publication date: 1997
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles in this issue (8)
See the source

Indexing