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ProtoEXIST: advanced prototype CZT coded aperture telescopes for EXIST

Allen, Branden and Hong, Jaesub and Grindlay, Josh and Barthelmy, Scott D. and Baker, Robert G. and Gehrels, Neil A. and Garson, Trey and Krawwczynski, Henric S. and Cook, Walter R. and Harrison, Fiona A. and Apple, Jeffery A. and Ramsey, Brian D. (2010) ProtoEXIST: advanced prototype CZT coded aperture telescopes for EXIST. In: Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray. Proceedings of SPIE. No.7732. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 77324D. ISBN 9780819482228.

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ProtoEXIST1 is a pathfinder for the EXIST-HET , a coded aperture hard X-ray telescope with a 4.5 m^2 CZT detector plane a 90x70 degree field of view to be flown as the primary instrument on the EXIST mission and is intended to monitor the full sky every 3 h in an effort to locate GRBs and other high energy transients. ProtoEXIST1 consists of a 256 cm^2 tiled CZT detector plane containing 4096 pixels composed of an 8x8 array of individual 1.95 cm x 1.95 cm x 0.5 cm CZT detector modules each with a 8 x 8 pixilated anode configured as a coded aperture telescope with a fully coded 10° x 10° field of view employing passive side shielding and an active CsI anti-coincidence rear shield, recently completed its maiden flight out of Ft. Sumner, NM on the 9th of October 2009. During the duration of its 6 hour flight on-board calibration of the detector plane was carried out utilizing a single tagged 198.8 nCi Am-241 source along with the simultaneous measurement of the background spectrum and an observation of Cygnus X-1. Here we recount the events of the flight and report on the detector performance in a near space environment. We also briefly discuss ProtoEXIST2 : the next stage of detector development which employs the NuSTAR ASIC enabling finer (32×32) anode pixilation. When completed ProtoEXIST2 will consist of a 256 cm^2 tiled array and be flown simultaneously with the ProtoEXIST1 telescope.

Item Type:Book Section
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Harrison, Fiona A.0000-0003-2992-8024
Additional Information:© 2010 SPIE.
Subject Keywords:CZT, Hard X-Ray, Coded Aperture
Series Name:Proceedings of SPIE
Issue or Number:7732
Record Number:CaltechAUTHORS:20161028-122824256
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Official Citation:Branden Allen ; Jaesub Hong ; Josh Grindlay ; Scott D. Barthelmy ; Robert G. Baker ; Neil A. Gehrels ; Trey Garson ; Henric S. Krawczynski ; Walter R. Cook ; Fiona A. Harrison ; Jeffrey A. Apple ; Brian D. Ramsey; ProtoEXIST: advanced prototype CZT coded aperture telescopes for EXIST. Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77324D (July 29, 2010); doi:10.1117/12.857940
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71576
Deposited By: Tony Diaz
Deposited On:28 Oct 2016 19:43
Last Modified:03 Oct 2019 16:08

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