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Proceedings Paper

Kilopixel backshort-under-grid arrays for the Primordial Inflation Polarization Explorer
Author(s): Christine A. Jhabvala; Dominic J. Benford; Regis P. Brekosky; Meng-Ping Chang; Nicholas P. Costen; Aaron M. Datesman; Gene C. Hilton; Kent D. Irwin; Alan J. Kogut; Justin Lazear; Edward S. Leong; Stephen F. Maher; Timothy M. Miller; S. H. Moseley; Elmer H. Sharp; Johannes G. Staguhn; Edward J. Wollack
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Paper Abstract

We have demonstrated a kilopixel, filled, infrared bolometer array for the balloon-borne Primordial Inflation Polarization Explorer (PIPER). The array consists of three individual components assembled into a single working unit: 1) a transition-edge-sensor bolometer array with background-limited sensitivity, 2) a quarter–wavelength backshort grid, and 3) an integrated Superconducting Quantum Interference Device (SQUID) multiplexer (MUX) readout. The detector array is a filled, square–grid of suspended, one-micron thick silicon bolometers with superconducting sensors. The Backshort–Under–Grid (BUG) is a separately fabricated component serving as a backshort to each pixel in the array. The backshorts are positioned in the cavities created behind each detector by the back–etched well. The spacing of the backshort beneath the detector grid can be set from ~30-300_microns by independently adjusting process parameters during fabrication. Kilopixel arrays are directly indium–bump–bonded to a 32x40 SQUID multiplexer circuit. The array architecture is suitable for a wide range of wavelengths and applications. Detector design specific to the PIPER instrument, fabrication overview, and assembly technologies will be discussed.

Paper Details

Date Published: 23 July 2014
PDF: 11 pages
Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 91533C (23 July 2014); doi: 10.1117/12.2056995
Show Author Affiliations
Christine A. Jhabvala, NASA Goddard Space Flight Ctr. (United States)
Dominic J. Benford, NASA Goddard Space Flight Ctr. (United States)
Regis P. Brekosky, NASA Goddard Space Flight Ctr. (United States)
Stinger Ghaffarian Technologies, Inc. (United States)
Meng-Ping Chang, NASA Goddard Space Flight Ctr. (United States)
Stinger Ghaffarian Technologies, Inc. (United States)
Nicholas P. Costen, NASA Goddard Space Flight Ctr. (United States)
Stinger Ghaffarian Technologies, Inc. (United States)
Aaron M. Datesman, NASA Goddard Space Flight Ctr. (United States)
Stinger Ghaffarian Technologies, Inc. (United States)
Gene C. Hilton, National Institute of Standards and Technology (United States)
Kent D. Irwin, Stanford Univ. (United States)
Alan J. Kogut, NASA Goddard Space Flight Ctr. (United States)
Justin Lazear, NASA Goddard Space Flight Ctr. (United States)
Johns Hopkins Univ. (United States)
Edward S. Leong, NASA Goddard Space Flight Ctr. (United States)
Stinger Ghaffarian Technologies, Inc. (United States)
Stephen F. Maher, NASA Goddard Space Flight Ctr. (United States)
Scienc Systems and Applications, Inc. (United States)
Timothy M. Miller, NASA Goddard Space Flight Ctr. (United States)
S. H. Moseley, NASA Goddard Space Flight Ctr. (United States)
Elmer H. Sharp, NASA Goddard Space Flight Ctr. (United States)
Global Science & Technology, Inc. (United States)
Johns Hopkins Univ. (United States)
Johannes G. Staguhn, NASA Goddard Space Flight Ctr. (United States)
Johns Hopkins Univ. (United States)
Edward J. Wollack, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 9153:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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