Detector and telescope development for ProtoEXIST and fine beam measurements of spectral response of CZT detectors

J. Hong; A. Copete; J. E. Grindlay; S. V. Vadawale; W. W. Craig; F. Harrison; W. R. Cook; N. Gehrels

doi:10.1117/12.617630

18 August 2005 Detector and telescope development for ProtoEXIST and fine beam measurements of spectral response of CZT detectors

J. Hong, A. Copete, J. E. Grindlay, S. V. Vadawale, W. W. Craig, F. Harrison, W. R. Cook, N. Gehrels

Author Affiliations +

Proceedings Volume 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV; 58980N (2005) https://doi.org/10.1117/12.617630
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We outline our plan to develop ProtoEXIST, a balloon-borne prototype experiment for the Energetic X-ray Imaging Survey Telescope (EXIST) for the Black Hole Finder Probe. EXIST will consist of multiple wide-field hard X-ray coded-aperture telescopes. The current design of the EXIST mission employs two types of telescope systems: high energy telescopes (HETs) using CZT detectors, and low energy telescopes (LETs) using Si detectors. With ProtoEXIST, we will develop and demonstrate the technologies required for the EXIST HETs. As part of our development efforts, we also present recent laboratory measurements of the spectral response and efficiency variation of imaging CZT detectors on a fine scale (~0.5 mm). The preliminary results confirm the need for multi-pixel readouts and small inter-pixel gaps to achieve uniform spectral response and high detection efficiency across detectors.

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J. Hong, A. Copete, J. E. Grindlay, S. V. Vadawale, W. W. Craig, F. Harrison, W. R. Cook, and N. Gehrels "Detector and telescope development for ProtoEXIST and fine beam measurements of spectral response of CZT detectors", Proc. SPIE 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV, 58980N (18 August 2005); https://doi.org/10.1117/12.617630

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KEYWORDS

Sensors

Crystals

Space telescopes

Detector development

Telescopes

X-ray telescopes

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