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A compact dilution refrigerator with vertical heat exchangers for operation to 2 milliK.

Author(s) : BUNKOV Ju. M., et al.

Type of article: Article

Summary

The authors describe a compactly designed dilution refrigerator with closely packed, vertical heat exchangers. The refrigerator reaches a temperature of 2 milliK and is easily constructed, since the sintered heat exchangers are straight units. Vibrating wire resonators are employed in the mixing chamber as diagnostic tools, which may act as both thermometers and phase-boundary level indicators. There is a design problem in the vertical arrangement, namely, the sumps on the concentrated phase side that can slowly fill with dilute phase and degrade the performance. The problem is solved by draining the superfluid helium 4 component in any collected dilute phase through superleaks into the mixing chamber.

Details

  • Original title: A compact dilution refrigerator with vertical heat exchangers for operation to 2 milliK.
  • Record ID : 1993-0002
  • Languages: English
  • Source: Sov. J. low Temp. Phys. - vol. 83 - n. 5-6
  • Publication date: 1991

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