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Proceedings Paper

Characterization of a prototype SCUBA-2 1280-pixel submillimetre superconducting bolometer array
Author(s): Adam L. Woodcraft; Matthew I. Hollister; Dan Bintley; Maureen A. Ellis; Xiaofeng Gao; Wayne S. Holland; Michael J. MacIntosh; Peter A. R. Ade; Julian S. House; Cynthia L. Hunt; Rashmi V. Sudiwala; William D. Duncan; Gene C. Hilton; Kent D. Irwin; Carl D. Reintsema; Camelia C. Dunare; William Parkes; Anthony J. Walton; Jan B. Kycia; Mandana Amiri; Bryce Burger; Mark Halpern
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Paper Abstract

We present the results of characterization measurements on a 1280 pixel superconducting bolometer array designed for operation at wavelengths around 450 μm. The array is a prototype for the sub-arrays which will form the focal plane for the SCUBA-2 sub-mm camera, being built for the James Clerk Maxwell Telescope (JCMT) in Hawaii. With over 10 000 pixels in total, it will provide a huge improvement in both sensitivity and mapping speed over existing instruments. The array consists of molybdenum-copper bi-layer TES (transition edge sensor) pixels, bonded to a multiplexer. The detectors operate at a temperature of approximately 175 mK, and require a heat sink at a temperature of approximately 60 mK. In contrast to previous TES arrays, the multiplexing elements are located beneath each pixel (an "in-focal plane" configuration). We present the results of electrical and optical measurements, and show that the optical NEP (noise equivalent power) is less than 1.4 × 10-16 W Hz-0.5 and thus within the goal of 1.5 × 10-16 W Hz-0.5.

Paper Details

Date Published: 6 July 2006
PDF: 11 pages
Proc. SPIE 6275, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, 62751F (6 July 2006); doi: 10.1117/12.671310
Show Author Affiliations
Adam L. Woodcraft, Univ. of Edinburgh (United Kingdom)
Matthew I. Hollister, Univ. of Edinburgh (United Kingdom)
Dan Bintley, Joint Astronomy Ctr. (United States)
Maureen A. Ellis, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Xiaofeng Gao, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Wayne S. Holland, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Michael J. MacIntosh, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Peter A. R. Ade, Cardiff Univ. (United Kingdom)
Julian S. House, Cardiff Univ. (United Kingdom)
Cynthia L. Hunt, Cardiff Univ. (United Kingdom)
Rashmi V. Sudiwala, Cardiff Univ. (United Kingdom)
William D. Duncan, National Institute of Standards and Technology (United States)
Gene C. Hilton, National Institute of Standards and Technology (United States)
Kent D. Irwin, National Institute of Standards and Technology (United States)
Carl D. Reintsema, National Institute of Standards and Technology (United States)
Camelia C. Dunare, Univ. of Edinburgh (United Kingdom)
William Parkes, Univ. of Edinburgh (United Kingdom)
Anthony J. Walton, Univ. of Edinburgh (United Kingdom)
Jan B. Kycia, Univ. of Waterloo (Canada)
Mandana Amiri, The Univ. of British Columbia (Canada)
Bryce Burger, The Univ. of British Columbia (Canada)
Mark Halpern, Univ. of British Columbia (Canada)


Published in SPIE Proceedings Vol. 6275:
Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington; William D. Duncan, Editor(s)

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