Hybrid liquid helium cryostat for radio astronomy use

Details Hybrid liquid helium cryostat for radio astronomy use Hybrid liquid helium cryostat for radio astronomy use

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988cryo...28..779e&link_type=abstract

Cryogenics (ISSN 0011-2275), vol. 28, Nov. 1988, p. 779-782.

Physics

4

Cryogenic Cooling, Cryostats, Liquid Helium, Radio Telescopes, Sis (Semiconductors), Submillimeter Waves, Superconductors, Thermal Stability

Scientific paper

A liquid helium cryostat, designed for cooling superconducting tunnel junction mixers, has been constructed with a sufficiently low boil-off rate to maintain 4 cu dm of liquid helium at a temperature of 3.7 K for more than 10 days with full heat load. The cryostat has been used in the laboratory and on the new Caltech Submillimeter Telescope for the past two years and has been specifically designed for maximum liquid helium hold time, ease of use and to withstand the various forces arising from telescope operation.

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