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Proceedings Paper

Development of x-ray and gamma-ray CZT detectors for homeland security applications
Author(s): Kuen Lee; J. W. Martin; A. B. Garson; M. Beilicke; Q. Guo; Q. Li; G. De Geronimo; M. Groza; A. Burger; H. Krawczynski
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Paper Abstract

Cadmium Zinc Telluride (CZT) continues to progress in quality and cost as a material for the detection of hard X-ray and gamma-ray photons with excellent spatial and energy resolutions. We are developing large-volume (0.5×3.9×3.9 cm3) cross-strip CZT detectors with the objective to combine the excellent performance achieved so far only with pixelated CZT detectors with a reduced number of readout channels. In this contribution, we discuss the spectroscopic performance of large volume CZT detectors from the company Orbotech when contacted as pixelated detectors. Subsequently, we present results obtained when the same substrates where contacted with cross-strip contacts. Finally, we use the results from a simulation study to discuss the optimization of the design of the strip contacts and the readout electronics.

Paper Details

Date Published: 29 April 2010
PDF: 9 pages
Proc. SPIE 7664, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XV, 766423 (29 April 2010); doi: 10.1117/12.850113
Show Author Affiliations
Kuen Lee, Washington Univ. in St. Louis (United States)
J. W. Martin, Washington Univ. in St. Louis (United States)
A. B. Garson, Washington Univ. in St. Louis (United States)
M. Beilicke, Washington Univ. in St. Louis (United States)
Q. Guo, Washington Univ. in St. Louis (United States)
Q. Li, Washington Univ. in St. Louis (United States)
G. De Geronimo, Brookhaven National Lab. (United States)
M. Groza, Fisk Univ. (United States)
A. Burger, Fisk Univ. (United States)
H. Krawczynski, Washington Univ. in St. Louis (United States)


Published in SPIE Proceedings Vol. 7664:
Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XV
Russell S. Harmon; John H. Holloway; J. Thomas Broach, Editor(s)

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