Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21347408c&link_type=abstract
American Astronomical Society, AAS Meeting #213, #474.08; Bulletin of the American Astronomical Society, Vol. 41, p.429
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Scientific paper
The ProtoEXIST1 mission, a pathfinder for the EXIST high energy telescope (HET), is slated for a spring 2009 flight out of Ft. Sumner, NM. The ProtoEXIST payload consists of two coded aperture telescopes, each with a 10^ 10^deg field of view and an angular resolution of approximately 10'. One telescope will be outfitted with passive Pb/Sn/Cu rear and side shielding while the other will utilize a rear active CsI anti-coincidence shield and passive side shielding for comparison of background rejection efficiency. The detector plane of each telescope consists of a 8 times 8 large tiled array of 2.04 cm times 2.04 cm CZT detectors, each with thickness of 0.5 cm and a pixilated anode consisting of 2.5 mm pixels. Each detector is read out utilizing the Caltech RADNET ASIC. In total the detector plane of a single telescope measures 16 cm times 16 cm and is sensitive over an energy range of 10 keV up to 500 keV, with an energy resolution of 3.1 keV FWHM at 59 keV. The ProtoEXIST1 flight will validate the use of tiled CZT arrays in flight and pave the way for ProtoEXIST2 which will demonstrate the use of a tiled array of CZT detectors with 0.6 mm pixels.
Allen Ben
Apple Jeffery
Baker Robin R.
Barthelmy Scott
Benson Carl
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