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Proceedings Paper

Si:As IBC array performance for SIRTF/IRAC
Author(s): Robert E. McMurray; R. R. Johnson; Craig R. McCreight; Mark E. McKelvey; James D. Garnett; Alan W. Hoffman; Nancy A. Lum; W. Y. Lum; Michael S. Smith; K. P. Sparkman; Andrew G. Toth; George Domingo; Danny J. Krebs; Murzy D. Jhabvala
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Paper Abstract

The goal of achieving background-limited performance in SIRTF's cryogenic telescope environment places stringent demands on focal plane sensitivity. SIRTF's prime imaging instrument, the InfraRed Array Camera (IRAC), employs 256 X 256 Si:As Impurity-Band Conduction (IBC) arrays for its two longest wavelength channels at 5.8 micrometers and 8.0 micrometers . Background-limited performance is achieved at very low levels of zodiacal background radiation with cryo-optimized readout and detector technology from Raytheon. Presented here are performance measurements of IRAC flight candidate IBC arrays. Operating at a temperature of 6 K, these devices meet all IRAC sensitivity requirements, with dark currents well below the 10 e-/s specification, Fowler-sampled noise levels of 16 e-, and excellent photometric stability.

Paper Details

Date Published: 16 November 2000
PDF: 8 pages
Proc. SPIE 4131, Infrared Spaceborne Remote Sensing VIII, (16 November 2000); doi: 10.1117/12.406573
Show Author Affiliations
Robert E. McMurray, NASA Ames Research Ctr. (United States)
R. R. Johnson, NASA Ames Research Ctr. (United States)
Craig R. McCreight, NASA Ames Research Ctr. (United States)
Mark E. McKelvey, NASA Ames Research Ctr. (United States)
James D. Garnett, Raytheon Co. (United States)
Alan W. Hoffman, Raytheon Co. (United States)
Nancy A. Lum, Raytheon Co. (United States)
W. Y. Lum, Raytheon Co. (United States)
Michael S. Smith, Raytheon Co. (United States)
K. P. Sparkman, Raytheon Co. (United States)
Andrew G. Toth, Raytheon Co. (United States)
George Domingo, Jet Propulsion Lab. (United States)
Danny J. Krebs, NASA Goddard Space Flight Ctr. (United States)
Murzy D. Jhabvala, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 4131:
Infrared Spaceborne Remote Sensing VIII
Marija Strojnik; Bjorn F. Andresen, Editor(s)

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