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Proceedings Paper

Design and fabrication of a two-dimensional superconducting bolometer array for SAFIRE
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Paper Abstract

The Submillimeter and Far-InfraRed Experiment (SAFIRE) on the SOFIA airborne observatory will employ a large-format, two-dimensional, close-packed bolometer array. SAFIRE is an imaging Fabry-Perot spectrometer operating at wavelengths between 100μm and 700μm. The array format is 16×32 pixels, using a 32-element multiplexer developed in part for this instrument. The low backgrounds achieved in spectroscopy require very sensitive detectors with NEPs of order 10-19 W/√Hz. An architecture which permits 512 pixels to be placed adjacent to each other in an area the size of a postage stamp, integrate them with multiplexers, and provide all the necessary wiring interconnections is a complex proposition, but can be achieved. Superconducting detectors can be close-packed using the Pop-Up Detector (PUD) format, and SQUID multiplexers operating at the detector base temperature can be intimately coupled to them. The result is a compact array, easily scalable to kilopixel arrays. We describe the PUD architecture, superconducting transition edge sensor bolometers we have manufactured and tested using the PUD architecture, and the electronics of SQUID multiplexed readouts. We show the design and assembly of the mechanical model of a 512-element bolometer array.

Paper Details

Date Published: 3 March 2003
PDF: 11 pages
Proc. SPIE 4857, Airborne Telescope Systems II, (3 March 2003); doi: 10.1117/12.458816
Show Author Affiliations
Dominic J. Benford, NASA Goddard Space Flight Ctr. (United States)
George M. Voellmer, NASA Goddard Space Flight Ctr. (United States)
James A. Chervenak, NASA Goddard Space Flight Ctr. (United States)
Kent D. Irwin, National Institute of Standards and Technology (United States)
S. Harvey Moseley, NASA Goddard Space Flight Ctr. (United States)
Richard A. Shafer, NASA Goddard Space Flight Ctr. (United States)
Johannes G. Staguhn, NASA Goddard Space Flight Ctr. (United States)
Science Systems and Applications, Inc. (United States)

Published in SPIE Proceedings Vol. 4857:
Airborne Telescope Systems II
Ramsey K. Melugin; Hans-Peter Roeser, Editor(s)

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