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Proceedings Paper

Performance of the SCUBA-2 dilution refrigerator
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Paper 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.

Paper Details

Date Published: 18 July 2008
PDF: 12 pages
Proc. SPIE 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, 70200Y (18 July 2008); doi: 10.1117/12.787791
Show Author Affiliations
Matthew Hollister, SUPA, Institute for Astronomy, Royal Observatory (United Kingdom)
Adam Woodcraft, SUPA, Institute for Astronomy, Royal Observatory (United Kingdom)
U.K. Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Wayne Holland, U.K. Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Dan Bintley, Joint Astronomy Ctr. (United States)


Published in SPIE Proceedings Vol. 7020:
Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV
William D. Duncan; Wayne S. Holland; Stafford Withington; Jonas Zmuidzinas, Editor(s)

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