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The proposed high-energy telescope (HET) for EXIST

Hong, J. and Grindlay, J. and Allen, B. and Skinner, G. and Barthelmy, S. and Gehrels, N. and Garson, A. and Krawczynski, H. and Cook, W. and Harrison, F. and Natalucci, L. and Ubertini, P. (2010) The proposed high-energy telescope (HET) 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. 77321Y. ISBN 978-0-8194-8222-8.

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The hard X-ray sky now being studied by INTEGRAL and Swift and soon by NuSTAR is rich with energetic phenomena and highly variable non-thermal phenomena on a broad range of timescales. The High Energy Telescope (HET) on the proposed Energetic X-ray Imaging Survey Telescope (EXIST) mission will repeatedly survey the full sky for rare and luminous hard X-ray phenomena at unprecedented sensitivities. It will detect and localize (<20", at 5σ threshold) X-ray sources quickly for immediate followup identification by two other onboard telescopes - the Soft X-ray imager (SXI) and Optical/Infrared Telescope (IRT). The large array (4.5 m^2) of imaging (0.6 mm pixel) CZT detectors in the HET, a coded-aperture telescope, will provide unprecedented high sensitivity (~0.06 mCrab Full Sky in a 2 year continuous scanning survey) in the 5 - 600 keV band. The large field of view (90° × 70°) and zenith scanning with alternating-orbital nodding motion planned for the first 2 years of the mission will enable nearly continuous monitoring of the full sky. A 3y followup pointed mission phase provides deep UV-Optical-IR-Soft X-ray and Hard X-ray imaging and spectroscopy for thousands of sources discovered in the Survey. We review the HET design concept and report the recent progress of the CZT detector development, which is underway through a series of balloon-borne wide-field hard X-ray telescope experiments, ProtoEXIST. We carried out a successful flight of the first generation of fine pixel large area CZT detectors (ProtoEXIST1) on Oct 9, 2009. We also summarize our future plan (ProtoEXIST2 & 3) for the technology development needed for the HET.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Grindlay, J.0000-0002-1323-5314
Harrison, F.0000-0003-2992-8024
Natalucci, L.0000-0002-6601-9543
Additional Information:© 2010 SPIE.
Subject Keywords:Coded-aperture imaging, X-ray survey, Gamma-ray Burst
Series Name:Proceedings of SPIE
Issue or Number:7732
Record Number:CaltechAUTHORS:20161101-074424155
Persistent URL:
Official Citation:J. Hong ; J. Grindlay ; B. Allen ; G. Skinner ; S. Barthelmy ; N. Gehrels ; A. Garson ; H. Krawczynski ; W. Cook ; F. Harrison ; L. Natalucci ; P. Ubertini; The proposed high-energy telescope (HET) for EXIST. Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77321Y (July 29, 2010); doi:10.1117/12.857713
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71646
Deposited By: Tony Diaz
Deposited On:01 Nov 2016 17:42
Last Modified:09 Mar 2020 13:19

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