Performance of a prototype CdZnTe detector module for hard x-ray astrophysics

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

doi:10.1117/12.409117

13 December 2000 Performance of a prototype CdZnTe detector module for hard x-ray astrophysics

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

Author Affiliations +

Proceedings Volume 4140, X-Ray and Gamma-Ray Instrumentation for Astronomy XI; (2000) https://doi.org/10.1117/12.409117
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

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.

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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, and Gerald J. Visser "Performance of a prototype CdZnTe detector module for hard x-ray astrophysics", Proc. SPIE 4140, X-Ray and Gamma-Ray Instrumentation for Astronomy XI, (13 December 2000); https://doi.org/10.1117/12.409117

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