Characterization of a prototype SCUBA-2 1280 pixel submillimetre superconducting bolometer array

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 AmiriBryce Burger, Mark Halpern

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present the results of characterization measurements on a 1280 pixel superconducting bolometer array designed for operation at wavelengths around 450 pm. 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 x 10(-16) W Hz(-0.5), and thus within the requirement of 2.9 x 10(-16) W Hz(-0.5).

Original languageEnglish
Title of host publicationMillimeter and Submillimeter Detectors and Instrumentation for Astronomy III
EditorsJ Zmuidzinas, WS Holland, S Withington, WD Duncan
Place of PublicationBELLINGHAM
PublisherSPIE
PagesF2751-F2751
Number of pages11
ISBN (Print)0-8194-6340-X
DOIs
Publication statusPublished - 2006
EventConference on Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III - Orlando
Duration: 29 May 200631 May 2006

Conference

ConferenceConference on Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III
CityOrlando
Period29/05/0631/05/06

Keywords

  • TES
  • superconducting detectors
  • submillimetre astronomy
  • large format
  • imaging
  • array
  • SCUBA-2
  • detectors
  • characterization
  • JCMT
  • ASTRONOMY
  • MULTIPLEXER
  • DESIGN
  • CAMERA
  • SCUBA-2

    Walton, A., Gundlach, A., Stevenson, T. & Terry, J.

    STFC

    1/02/0131/01/08

    Project: Research

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