Benford, D. J. and Ames, T. A. and Chervenak, J. A. and Grossman, E. N. and Irwin, K. D. and Khan, S. A. and Maffei, B. and Moseley, S. H. and Pajot, F. and Phillips, T. G. and Renault, J.-C. and Reintsema, C. D. and Rioux, C. and Shafer, R. A. and Staguhn, J. G. and Vastel, C. and Voellmer, G. M. (2002) First Astronomical Use of Multiplexed Transition Edge Bolometers. In: Low Temperature Detectors. AIP Conference Series (605). American Institute of Physics , Melville, N.Y. , pp. 589-592. ISBN 0-7354-0049-0 http://resolver.caltech.edu/CaltechAUTHORS:20111101-150746771
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We present performance results based on the first astronomical use of multiplexed superconducting bolometers. The Fabry-Perot Interferometer Bolometer Research Experiment (FIBRE) is a broadband submillimeter spectrometer that achieved first light in June 2001 at the Caltech Submillimeter Observatory (CSO). FIBRE'S detectors are superconducting transition edge sensor (TES) bolometers read out by a SQUID multiplexer. The Fabry-Perot uses a low resolution grating to order sort the incoming light. 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 δλ/λ ≈ 1/1200 can be acquired. This 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 star formation tracers neutral carbon [Cl] and carbon monoxide (CO). We have verified that the multiplexed bolometers are photon noise limited even with the low power present in moderate resolution spectrometry.
|Item Type:||Book Section|
|Additional Information:||© 2002 American Institute of Physics. Issue Date: 5 February 2002. We thank the staff of the CSO for making the observations described here possible; their support was crucial in the commissioning of FIBRE. We owe a debt of gratitude to many at NASA/GSFC for their contributions to FIBRE hardware and software.|
|Subject Keywords:||submillimetre astronomy, astronomical instruments, bolometers, SQUIDs, multiplexing equipment, superconducting particle detectors, superconducting transition temperature, superconducting thin films, submillimetre wave spectra, submillimetre wave spectroscopy|
|Classification Code:||PACS: 95.55.Rg; 85.25.Oj|
|Official Citation:||First astronomical use of multiplexed transition edge bolometers D. J. Benford, T. A. Ames, J. A. Chervenak, E. N. Grossman, K. D. Irwin, S. A. Khan, B. Maffei, S. H. Moseley, F. Pajot, T. G. Phillips, J.-C. Renault, C. D. Reintsema, C. Rioux, R. A. Shafer, J. G. Staguhn, C. Vastel, and G. M. Voellmer, AIP Conf. Proc. 605, 589 (2002), DOI:10.1063/1.1457715|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||02 Nov 2011 14:30|
|Last Modified:||26 Dec 2012 14:21|
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