Performance of the SCUBA-2 dilution refrigerator

Matthew Hollister; Adam Woodcraft; Wayne Holland; Dan Bintley

doi:10.1117/12.787791

18 July 2008 Performance of the SCUBA-2 dilution refrigerator

Matthew Hollister, Adam Woodcraft, Wayne Holland, Dan Bintley

Proceedings Volume 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV; 70200Y (2008) https://doi.org/10.1117/12.787791
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

SCUBA-2 is a new wide-field submillimeter continuum instrument being commissioned on the James Clerk Maxwell Telescope on Mauna Kea in Hawaii. SCUBA-2 images simultaneously at 450 and 850 μm using large-scale arrays of superconducting bolometers, with over five thousand pixels at each wavelength. The arrays are cooled to less than 100 mK by the mixing chamber of a dilution refrigerator (DR), with a radiation shield at a nominal temperature of 1 K cooled by the DR still. The DR is a "dry" system, using a pulse tube cooler for precooling of the circulating helium in place of a liquid helium bath. This paper presents key performance data for the DR.

Citation Download Citation

Matthew Hollister, Adam Woodcraft, Wayne Holland, and Dan Bintley "Performance of the SCUBA-2 dilution refrigerator", Proc. SPIE 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, 70200Y (18 July 2008); https://doi.org/10.1117/12.787791

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