NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
A 90GHz Bolometer Camera Detector System for the GreenWe describe a close-packed, two-dimensional imaging detector system for operation at 90GHz (3.3 mm) for the 100m Green Bank Telescope (GBT). This system will provide high sensitivity (less than 1mJy in 1s) rapid imaging (15'x15' to 150 micron Jy 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 (TES) 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 approximately 2 x 10(exp -17) W/square root of Hz, the TES bolometers will provide fast, linear, sensitive response for high performance imaging. The detectors are read out by an 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
20050041922
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 (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
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.

Related Records

There are no records associated with this record.
No Preview Available