Cadmium-zinc-telluride crystal array spectrometer

William M. Quam; Thomas DeVore; Harold R McHugh; Robert D Vogel; John Wesolowski

doi:10.1117/12.510747

20 January 2004 Cadmium-zinc-telluride crystal array spectrometer

William M. Quam, Thomas DeVore, Harold R McHugh, Robert D Vogel, John Wesolowski

Proceedings Volume 5198, Hard X-Ray and Gamma-Ray Detector Physics V; (2004) https://doi.org/10.1117/12.510747
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

This paper describes a gamma detector employing an array of eight cadmium-zinc-telluride (CZT) crystals configured as a high resolution gamma ray spectrometer. This detector is part of a more complex instrument that identifies the isotope, displays this information, and records the gamma spectrum. Various alarms and other operator features are incorporated in this battery operated rugged instrument. The CZT detector is the key component of this instrument and will be described in detail in this paper. We have made extensive spectral measurements of the usual laboratory gamma sources, common medical isotopes, and various Special Nuclear Materials (SNM) with this detector. Some of these data will be presented as spectra. We will also present energy resolution and detection efficiency for the basic 8-crystal array. Additional data will also be presented for a 32-crystal array. The basic 8-crystal array development was completed two years ago, and the system electronic design has been improved recently. This has resulted in significantly improved noise performance. We expect to have a much smaller detector package, using 8 crystals, in a few months. This package will use flip-chip packaging to reduce the electronics physical size by a factor of 5.

Citation Download Citation

William M. Quam, Thomas DeVore, Harold R McHugh, Robert D Vogel, and John Wesolowski "Cadmium-zinc-telluride crystal array spectrometer", Proc. SPIE 5198, Hard X-Ray and Gamma-Ray Detector Physics V, (20 January 2004); https://doi.org/10.1117/12.510747

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