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Proceedings Paper

HARP-B: a 350-GHz 16-element focal plane array for the James Clerk Maxwell Telescope
Author(s): Henry Smith; Richard E. Hills; Stafford Withington; Johnathan Richer; Jamie Leech; Ross Williamson; Hugh Gibson; Roger Dace; P. G. Ananthasubramanian; Robert W. Barker; Robert Baldwin; Howard Stevenson; Peter Doherty; Dennis Molloy; Victor Quy; Chris Lush; Sally Hales; William R. F. Dent; Ian Pain; Robert Wall; Peter R. Hastings; Brenda Graham; Thomas E. C. Baillie; Ken Laidlaw; Richard J. Bennett; Ian Laidlaw; William Duncan; Maureen A. Ellis; Russell O. Redman; Robert Wooff; Keith K. Yeung; Joeleff T. Fitzsimmons; Lorne Avery; Dennis Derdall; Dean Josephson; Andre Anthony; Raj Atwal; Tomas Chylek; Dean J. Shutt; Per Friberg; Nicholas P. Rees; Robin Philips; Matthias Kroug; Teun M. Klapwijk; Tony Zijlstra
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Paper Abstract

A 350GHz 4 × 4 element heterodyne focal plane array using SIS detectors is presently being constructed for the JCMT. The construction is being carried out by a collaborative group led by the MRAO, part of the Astrophysics Group, Cavendish Laboratory, in conjunction with the UK-Astronomy Technology Centre (UK-ATC), The Herzberg Institute of Astrophysics (HIA) and the Joint Astronomy Center (JAC). The Delft Institute of Microelectronics & Sub-micron Technology (DIMES) is fabricating junctions for the SIS mixers that have been designed at MRAO. Working in conjunction with the 'ACSIS' correlator & imaging system, HARP-B will provide 3-dimensional imaging capability with high sensitivity at 325 to 375GHz. This will be the first sub-mm spectral imaging system on JCMT - complementing the continuum imaging capability of SCUBA - and affording significantly improved productivity in terms of speed of mapping. The core specification for the array is that the combination of the receiver noise temperature and beam efficiency, weighted optimally across the array will be <330K SSB for the central 20GHz of the tuning range. In technological terms, HARP-B synthesizes a number of interesting and innovative features across all elements of the design. This paper presents both a technical and organizational overview of the HARP-B project and gives a description of all of the key design features of the instrument. 'First light' on the instrument is currently anticipated in spring 2004.

Paper Details

Date Published: 17 February 2003
PDF: 11 pages
Proc. SPIE 4855, Millimeter and Submillimeter Detectors for Astronomy, (17 February 2003); doi: 10.1117/12.459674
Show Author Affiliations
Henry Smith, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Richard E. Hills, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Stafford Withington, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Johnathan Richer, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Jamie Leech, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Ross Williamson, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Hugh Gibson, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Roger Dace, Cavendish Lab./Univ. of Cambridge (United Kingdom)
P. G. Ananthasubramanian, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Robert W. Barker, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Robert Baldwin, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Howard Stevenson, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Peter Doherty, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Dennis Molloy, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Victor Quy, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Chris Lush, Cavendish Lab./Univ. of Cambridge (United Kingdom)
Sally Hales, Cavendish Lab./Univ. of Cambridge (United Kingdom)
William R. F. Dent, UK Astronomy Technology Ctr. (United Kingdom)
Ian Pain, Astronomical Technology Ctr. (United Kingdom)
Robert Wall, UK Astronomy Technology Ctr. (United Kingdom)
Peter R. Hastings, UK Astronomy Technology Ctr. (United Kingdom)
Brenda Graham, UK Astronomy Technology Ctr. (United Kingdom)
Thomas E. C. Baillie, UK Astronomy Technology Ctr. (United Kingdom)
Ken Laidlaw, UK Astronomy Technology Ctr. (United Kingdom)
Richard J. Bennett, UK Astronomy Technology Ctr. (United Kingdom)
Ian Laidlaw, UK Astronomy Technology Ctr. (United Kingdom)
William Duncan, UK Astronomy Technology Ctr. (United Kingdom)
Maureen A. Ellis, UK Astronomy Technology Ctr. (United Kingdom)
Russell O. Redman, Herzberg Institute of Astrophysics (Canada)
Robert Wooff, Herzberg Institute of Astrophysics (Canada)
Keith K. Yeung, Herzberg Institute of Astrophysics (Canada)
Joeleff T. Fitzsimmons, Herzberg Institute of Astrophysics (Canada)
Lorne Avery, Herzberg Institute of Astrophysics (Canada)
Dennis Derdall, Herzberg Institute of Astrophysics (Canada)
Dean Josephson, Herzberg Institute of Astrophysics (Canada)
Andre Anthony, Herzberg Institute of Astrophysics (Canada)
Raj Atwal, Herzberg Institute of Astrophysics (Canada)
Tomas Chylek, Joint Astronomy Ctr. (United States)
Dean J. Shutt, Joint Astronomy Ctr. (United States)
Per Friberg, Joint Astronomy Ctr. (United States)
Nicholas P. Rees, Joint Astronomy Ctr. (United States)
Robin Philips, Joint Astronomy Ctr. (United States)
Matthias Kroug, Technische Univ. Delft (Netherlands)
Teun M. Klapwijk, Technische Univ. Delft (Netherlands)
Tony Zijlstra, Technische Univ. Delft (Netherlands)


Published in SPIE Proceedings Vol. 4855:
Millimeter and Submillimeter Detectors for Astronomy
Thomas G. Phillips; Jonas Zmuidzinas, Editor(s)

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