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Development of Tiled Imaging CZT Detectors for Sensitive Wide-Field Hard X-Ray Surveys to EXISTMotivated by the proposed EXIST mission, a "medium-class" space observatory to survey black holes and the Early Universe proposed to the 2010 NAS/NRC Astronomy and Astrophysics Decadal Survey, we have developed the first "large" area 256 sq cm close-tiled (0.6 mm gaps) hard X-ray (20-600 keV) imaging detector employing pixelated (2.5 mm) CdZnTe (CZT) detectors, each 2 x 2 x 0.5 cubic cm. We summarize the design, development and operation of this detector array (8 x 8 CZTs) and its performance as the imager for a coded aperture telescope on a high altitude (40 km) balloon flight in October. 2009, as the ProtoEX1STl payload. We then outline our current development of a second-generation imager, ProtcEXIST2. with 0.6 mm pixels on a 32 x 32 array on each CZT, and how it will lead to the ultimate imaging system needed for EXIST. Other applications of this technology will also be mentioned.
Document ID
20120017011
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Grindlay, J.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Hong, J.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Allen, B.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Barthelmy, S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Baker, R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 25, 2013
Publication Date
October 1, 2011
Publication Information
Publisher: Elsevier Science Publishers
Subject Category
Astronomy
Report/Patent Number
GSFC.JA.6610.2012
Funding Number(s)
CONTRACT_GRANT: NNG06WC12G
CONTRACT_GRANT: NN09AD76G
Distribution Limits
Public
Copyright
Other

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