18 July 2008 Performance of the SCUBA-2 dilution refrigerator
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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.
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Matthew Hollister, Matthew Hollister, Adam Woodcraft, Adam Woodcraft, Wayne Holland, Wayne Holland, Dan Bintley, 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); doi: 10.1117/12.787791; https://doi.org/10.1117/12.787791

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