18 July 2008 Performance of the SCUBA-2 dilution refrigerator
Author Affiliations +
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.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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
PROCEEDINGS
12 PAGES


SHARE
Back to Top