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Proceedings Paper

Astronomical demonstration of superconducting bolometer arrays
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Paper Abstract

We have built a prototype submillimeter spectrometer, FIBRE, which is based on a helium-cooled scanning Fabry-Perot and superconducting transition edge sensor bolometers (TES). SQUID multiplexers are used to read out the individual detector pixels. The spectral resolving power of the instrument is provided by the Fabry-Perot spectrometer. The outgoing light from the Fabry-Perot passes onto a low resolution grating for order sorting. A linear bolometer array consisting of 16 elements detects this dispersed light, capturing 5 orders simultaneously from one position on the sky. With tuning of the Fabry-Perot over one free spectral range, a spectrum covering Δλ/λ=1/7 at a resolution of ~1/1200 can be achieved. The spectral resolution is sufficient to resolve doppler broadened line emission from external galaxies. FIBRE operates in the 350 μm and 450 μm bands. These bands cover line emission from the important PDR tracers neutral carbon [CI] and carbon monoxide CO. The spectrometer was used at the Caltech Submillimeter Observatory to obtain the first ever astronomical observations using multiplexed arrays of superconducting transition edge bolometers.

Paper Details

Date Published: 17 February 2003
PDF: 8 pages
Proc. SPIE 4855, Millimeter and Submillimeter Detectors for Astronomy, (17 February 2003); doi: 10.1117/12.459377
Show Author Affiliations
Johannes G. Staguhn, NASA Goddard Space Flight Ctr. (United States)
Dominic J. Benford, NASA Goddard Space Flight Ctr. (United States)
Francois Pajot, Univ. de Paris-Sud (France)
Troy J. Ames, NASA Goddard Space Flight (United States)
James A. Chervenak, NASA Goddard Space Flight (United States)
Erich N. Grossman, National Institute of Standards and Technology (United States)
Kent D. Irwin, National Institute of Standards and Technology (United States)
Bruno Maffei, Univ. of Wales Cardiff (United Kingdom)
S. Harvey Moseley, NASA Goddard Space Flight Ctr. (United States)
Thomas G. Phillips, California Institute of Technology (United States)
Carl D. Reintsema, National Institute of Standards and Technology (United States)
Cyrille Rioux, Univ. de Paris-Sud (France)
Richard A. Shafer, NASA Goddard Space Flight Ctr. (United States)
George M. Voellmer, NASA Goddard Space Flight Ctr. (United States)


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

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