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Proceedings Paper

HARP: a submillimetre heterodyne array receiver operating on the James Clerk Maxwell Telescope
Author(s): H. Smith; J. Buckle; R. Hills; G. Bell; J. Richer; E. Curtis; S. Withington; J. Leech; R. Williamson; W. Dent; P. Hastings; R. Redman; B. Wooff; K. Yeung; P. Friberg; C. Walther; R. Kackley; T. Jenness; R. Tilanus; J. Dempsey; M. Kroug; T. Zijlstra; T. M. Klapwijk
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Paper Abstract

This paper describes the key design features and performance of HARP, an innovative heterodyne focal-plane array receiver designed and built to operate in the submillimetre on the James Clerk Maxwell Telescope (JCMT) in Hawaii. The 4x4 element array uses SIS detectors, and is the first sub-millimetre spectral imaging system on the JCMT. HARP provides 3-dimensional imaging capability with high sensitivity at 325-375 GHz and affords significantly improved productivity in terms of speed of mapping. HARP was designed and built as a collaborative project between the Cavendish Astrophysics Group in Cambridge UK, the UK-Astronomy Technology Centre in Edinburgh UK, the Herzberg Institute of Astrophysics in Canada and the Joint Astronomy Centre in Hawaii. SIS devices for the mixers were fabricated to a Cavendish Astrophysics Group design at the Delft University of Technology in the Netherlands. Working in conjunction with the new Auto Correlation Spectral Imaging System (ACSIS), first light with HARP was achieved in December 2005. HARP synthesizes a number of interesting features across all elements of the design; we present key performance characteristics and images of astronomical observations obtained during commissioning.

Paper Details

Date Published: 18 July 2008
PDF: 15 pages
Proc. SPIE 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, 70200Z (18 July 2008); doi: 10.1117/12.790707
Show Author Affiliations
H. Smith, Cavendish Lab., Univ. of Cambridge (United Kingdom)
J. Buckle, Cavendish Lab., Univ. of Cambridge (United Kingdom)
R. Hills, Cavendish Lab., Univ. of Cambridge (United Kingdom)
G. Bell, Cavendish Lab., Univ. of Cambridge (United Kingdom)
J. Richer, Cavendish Lab., Univ. of Cambridge (United Kingdom)
E. Curtis, Cavendish Lab., Univ. of Cambridge (United Kingdom)
S. Withington, Cavendish Lab., Univ. of Cambridge (United Kingdom)
J. Leech, Cavendish Lab., Univ. of Cambridge (United Kingdom)
Joint Astronomy Ctr. (United States)
R. Williamson, Cavendish Lab., Univ. of Cambridge (United Kingdom)
W. Dent, UK Astronomy Technology Ctr. (United Kingdom)
P. Hastings, UK Astronomy Technology Ctr. (United Kingdom)
R. Redman, Herzberg Institute of Astrophysics (Canada)
B. Wooff, Herzberg Institute of Astrophysics (Canada)
K. Yeung, Herzberg Institute of Astrophysics (Canada)
P. Friberg, Joint Astronomy Ctr. (United States)
C. Walther, Joint Astronomy Ctr. (United States)
R. Kackley, Joint Astronomy Ctr. (United States)
T. Jenness, Joint Astronomy Ctr. (United States)
R. Tilanus, Joint Astronomy Ctr. (United States)
J. Dempsey, Joint Astronomy Ctr. (United States)
M. Kroug, Kavli Institute of Nanoscience, Delft Univ. of Technology (Netherlands)
T. Zijlstra, Kavli Institute of Nanoscience, Delft Univ. of Technology (Netherlands)
T. M. Klapwijk, Kavli Institute of Nanoscience, Delft Univ. of Technology (Netherlands)


Published in SPIE Proceedings Vol. 7020:
Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV
William D. Duncan; Wayne S. Holland; Stafford Withington; Jonas Zmuidzinas, Editor(s)

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