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A 90GHz Bolometer Camera Detector System for the Green Bank TelescopeWe describe a close-packed, two-dimensional imaging detector system for operation at 90GHz (3.3mm) for the 100 m Green Bank Telescope (GBT) This system will provide high sensitivity (<1mjy in 1s rapid imaging (15'x15' to 250 microJy in 1 hr) at the world's largest steerable aperture. The heart of this camera is an 8x8 close packed, Nyquist-sampled array of superconducting transition edge sensor bolometers. We have designed and are producing a functional superconducting bolometer array system using a monolithic planar architecture and high-speed multiplexed readout electronics. With an NEP of approx. 2.10(exp 17) W/square root Hz, the TES bolometers will provide fast linear sensitive response for high performance imaging. The detectors are read out by and 8x8 time domain SQUID multiplexer. A digital/analog electronics system has been designed to enable read out by SQUID multiplexers. First light for this instrument on the GBT is expected within a year.
Document ID
20040182418
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Benford, Dominic J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Allen, Christine A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Buchanan, Ernest D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chen, Tina C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chervenak, James A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Devlin, Mark J.
(Pennsylvania Univ. Philadelphia, PA, United States)
Dicker, Simon R.
(Pennsylvania Univ. Philadelphia, PA, United States)
Forgione, Joshua B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 22, 2013
Publication Date
January 1, 2004
Subject Category
Astronomy
Meeting Information
Meeting: Beyond Spitzer International Conference
Location: Pasadena, CA
Country: United States
Start Date: June 7, 2004
End Date: June 10, 2004
Distribution Limits
Public
Copyright
Other

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