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Proceedings Paper

An update on the SCUBA-2 project
Author(s): Michael Damian Audley; Wayne S. Holland; Trevor Hodson; Michael MacIntosh; Ian Robson; Kent D. Irwin; Gene Hilton; William D. Duncan; Carl Reintsema; Anthony J. Walton; William Parkes; Peter A. R. Ade; Ian Walker; Mike Fich; Jan Kycia; Mark Halpern; David A. Naylor; George Mitchell; Pierre Bastien
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Paper Abstract

SCUBA-2, which replaces SCUBA (the Submillimeter Common User Bolometer Array) on the James Clerk Maxwell Telescope (JCMT) in 2006, is a large-format bolometer array for submillimeter astronomy. Unlike previous detectors which have used discrete bolometers, SCUBA-2 has two dc-coupled, monolithic, filled arrays with a total of ~10,000 bolometers. It will offer simultaneous imaging of a 50 sq-arcmin field of view at wavelengths of 850 and 450 microns. SCUBA-2 is expected to have a huge impact on the study of galaxy formation and evolution in the early Universe as well as star and planet formation in our own Galaxy. Mapping the sky to the same S/N up to 1000 times faster than SCUBA, it will also act as a pathfinder for the new submillimeter interferometers such as ALMA. SCUBA-2's absorber-coupled pixels use superconducting transition edge sensors operating at 120 mK for performance limited by the sky background photon noise. The monolithic silicon detector arrays are deep-etched by the Bosch process to isolate the pixels on silicon nitride membranes. Electrical connections are made through indium bump bonds to a SQUID time-domain multiplexer (MUX). We give an overview of the SCUBA-2 system and an update on its status, and describe some of the technological innovations that make this unique instrument possible.

Paper Details

Date Published: 8 October 2004
PDF: 15 pages
Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004); doi: 10.1117/12.551259
Show Author Affiliations
Michael Damian Audley, UK Astronomy Technology Ctr. (United Kingdom)
Wayne S. Holland, UK Astronomy Technology Ctr. (United Kingdom)
Trevor Hodson, UK Astronomy Technology Ctr. (United Kingdom)
Michael MacIntosh, UK Astronomy Technology Ctr. (United Kingdom)
Ian Robson, UK Astronomy Technology Ctr. (United Kingdom)
Kent D. Irwin, National Institute of Standards and Technology (United States)
Gene Hilton, National Institute of Standards and Technology (United States)
William D. Duncan, National Institute of Standards and Technology (United States)
Carl Reintsema, National Institute of Standards and Technology (United States)
Anthony J. Walton, Univ. of Edinburgh (United Kingdom)
William Parkes, Univ. of Edinburgh (United Kingdom)
Peter A. R. Ade, Cardiff Univ. (United Kingdom)
Ian Walker, Cardiff Univ. (United Kingdom)
Mike Fich, Univ. of Waterloo (Canada)
Jan Kycia, Univ. of Waterloo (Canada)
Mark Halpern, Univ. of British Columbia (Canada)
David A. Naylor, Univ. of Lethbridge (Canada)
George Mitchell, St. Mary's Univ. (Canada)
Pierre Bastien, Univ. de Montreal (Canada)


Published in SPIE Proceedings Vol. 5498:
Millimeter and Submillimeter Detectors for Astronomy II
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington, Editor(s)

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