Other
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21460205h&link_type=abstract
American Astronomical Society, AAS Meeting #214, #602.05
Other
Scientific paper
The High Energy Telescope (HET) on EXIST is a coded-aperture telescope using a large array of CZT detectors and hybrid tungsten mask. The HET will locate high red-shift Gamma-Ray Bursts (GRBs) and other rare elusive transients quickly (<10 sec) and accurately (<20") for rapid (<1-2 min) follow-up onboard optical/IR imaging and spectroscopy. The HET will also survey the highly variable transient hard X-ray sky on unprecedented time scales, scanning nearly the entire sky in every two orbits (3 hour). A key challenge of the HET is to develop a large array (4.5m2) of fine pixel imaging CZT detectors. We report the recent progress in the first prototype CZT detector module (16x16 cm2). We plan to test two of such modules in a near space environment through our balloon experiment - ProtoEXIST1. The first flight is scheduled in Fall 2009. ProtoEXIST1 is the first in a series of increasingly sophisticated detector development programs to fulfill the technology requirement for the HET on EXIST.
Allen Ben
Barthelmy Scott
EXIST Team
Finger Michael
Gehrels Neil
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