HARP-B: a 350-GHz 16-element focal plane array for the James Clerk Maxwell Telescope

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

doi:10.1117/12.459674

17 February 2003 HARP-B: a 350-GHz 16-element focal plane array for the James Clerk Maxwell telescope

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

Author Affiliations +

Proceedings Volume 4855, Millimeter and Submillimeter Detectors for Astronomy; (2003) https://doi.org/10.1117/12.459674
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

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.

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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, and Tony Zijlstra "HARP-B: a 350-GHz 16-element focal plane array for the James Clerk Maxwell telescope", Proc. SPIE 4855, Millimeter and Submillimeter Detectors for Astronomy, (17 February 2003); https://doi.org/10.1117/12.459674

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