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Proceedings Paper

The Herschel/PACS 2560 bolometers imaging camera
Author(s): Nicolas Billot; Patrick Agnèse; Jean-Louis Auguères; Alain Béguin; André Bouère; Olivier Boulade; Christophe Cara; Christelle Cloué; Eric Doumayrou; Lionel Duband; Benoît Horeau; Isabelle Le Mer; Jean Lepennec; Jérome Martignac; Koryo Okumura; Vincent Revéret; Marc Sauvage; François Simoens; Laurent Vigroux
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Paper Abstract

The development program of the flight model imaging camera for the PACS instrument on-board the Herschel spacecraft is nearing completion. This camera has two channels covering the 60 to 210 microns wavelength range. The focal plane of the short wavelength channel is made of a mosaic of 2×4 3-sides buttable bolometer arrays (16×16 pixels each) for a total of 2048 pixels, while the long wavelength channel has a mosaic of 2 of the same bolometer arrays for a total of 512 pixels. The 10 arrays have been fabricated, individually tested and integrated in the photometer. They represent the first filled arrays of fully collectively built bolometers with a cold multiplexed readout, allowing for a properly sampled coverage of the full instrument field of view. The camera has been fully characterized and the ground calibration campaign will take place after its delivery to the PACS consortium in mid 2006. The bolometers, working at a temperature of 300 mK, have a NEP close to the BLIP limit and an optical bandwidth of 4 to 5 Hz that will permit the mapping of large sky areas. This paper briefly presents the concept and technology of the detectors as well as the cryocooler and the warm electronics. Then we focus on the performances of the integrated focal planes (responsivity, NEP, low frequency noise, bandwidth).

Paper Details

Date Published: 16 June 2006
PDF: 12 pages
Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 62650D (16 June 2006); doi: 10.1117/12.671154
Show Author Affiliations
Nicolas Billot, DAPNIA, CEA (France)
Patrick Agnèse, LETI, CEA (France)
Jean-Louis Auguères, DAPNIA, CEA (France)
Alain Béguin, LETI, CEA (France)
André Bouère, DAPNIA, CEA (France)
Olivier Boulade, DAPNIA, CEA (France)
Christophe Cara, DAPNIA, CEA (France)
Christelle Cloué, DAPNIA, CEA (France)
Eric Doumayrou, DAPNIA, CEA (France)
Lionel Duband, DRFMC, CEA (France)
Benoît Horeau, DAPNIA, CEA (France)
Isabelle Le Mer, DAPNIA, CEA (France)
Jean Lepennec, DAPNIA, CEA (France)
Jérome Martignac, DAPNIA, CEA (France)
Koryo Okumura, DAPNIA, CEA (France)
Vincent Revéret, European Southern Observatory (Chile)
Marc Sauvage, DAPNIA, CEA (France)
François Simoens, LETI, CEA (France)
Laurent Vigroux, Institut d'Astrophysique de Paris (France)

Published in SPIE Proceedings Vol. 6265:
Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter
John C. Mather; Howard A. MacEwen; Mattheus W. M. de Graauw, Editor(s)

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