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Proceedings Paper

Performance of a prototype CdZnTe detector module for hard x-ray astrophysics
Author(s): Kimberly R. Slavis; Paul F. Dowkontt; Fred Duttweiler; John W. Epstein; Paul L. Hink; George L. Huszar; Emrah Kalemci; Philippe C. Leblanc; James L. Matteson; Michael R. Pelling; Richard E. Rothschild; Edwin A. Stephan; Tumay O. Tumer; Gerald J. Visser
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Paper Abstract

Our collaboration is characterizing a prototype detector module designed for high energy X-ray astrophysics research covering the 20 - 250 keV energy range. The module consists of a three dimensional position sensitive CdZnTe detector, 25 mm X 25 mm X 2 mm, with 1 mm pitch crossed strip electrodes, an interleaved steering electrode, and an Application Specific Integrated Circuit (ASIC) for individual electrode readout. The newly developed readout system is compact, lightweight, has low power consumption and will lead to reduced system electronic noise. The detector is surrounded by a plastic anti-coincidence system for charged particles, and passive shielding that has been optimized based on results from two previous balloon flights. The first balloon flight test of the new detector module is scheduled for Fall 2000. In addition to our continuing balloon studies, we are investigating proton radiation damage effects and present preliminary results. After proton irradiation, the energy resolution is not significantly degraded, calibration photopeaks are down shifted by less than 10% in energy, and the depth of interaction dependence is nearly eliminated.

Paper Details

Date Published: 13 December 2000
PDF: 8 pages
Proc. SPIE 4140, X-Ray and Gamma-Ray Instrumentation for Astronomy XI, (13 December 2000); doi: 10.1117/12.409117
Show Author Affiliations
Kimberly R. Slavis, Washington Univ. (United States)
Paul F. Dowkontt, Washington Univ. (United States)
Fred Duttweiler, Univ. of California/San Diego (United States)
John W. Epstein, Washington Univ. (United States)
Paul L. Hink, Washington Univ. (United States)
George L. Huszar, Univ. of California/San Diego (United States)
Emrah Kalemci, Univ. of California/San Diego (United States)
Philippe C. Leblanc, Univ. of California/San Diego (United States)
James L. Matteson, Univ. of California/San Diego (United States)
Michael R. Pelling, Univ. of California/San Diego (United States)
Richard E. Rothschild, Univ. of California/San Diego (United States)
Edwin A. Stephan, Univ. of California/San Diego (United States)
Tumay O. Tumer, University of California/Riverside (United States)
Gerald J. Visser, Nova R&D, Inc. (United States)

Published in SPIE Proceedings Vol. 4140:
X-Ray and Gamma-Ray Instrumentation for Astronomy XI
Kathryn A. Flanagan; Oswald H. W. Siegmund, Editor(s)

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