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Proceedings Paper

High-dynamic-range x-ray imager employing CdZnTe detector arrays
Author(s): Richard C. Schirato; Raulf M. Polichar; John H. Reed; Scott T. Smith
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Paper Abstract

We have designed and fabricated an x-ray linear scanner based on monolithic CdZnTe arrays. The arrays are 1.0 inch long with 16 detectors each. To increase the x-ray stopping power of the arrays, they are operated with the x-ray photons incident normal to the E-field direction. A photon-counting pulse mode read-out is utilized to produce high dynamic range images at low incident flux rates. Our read-out electronics are composed of independent 16-channel modules including charge pre-amplification, pulse shaping discriminated scaler, and buffered I/O. The linear packing density for the electronics is 16 channels per inch, commensurate with the array pitch. Results from measurements of spatial response generated by scanning a fine beam of gamma rays across the arrays, and x-ray images produced in a linear-scan mode are presented.

Paper Details

Date Published: 16 December 1993
PDF: 7 pages
Proc. SPIE 2009, X-Ray Detector Physics and Applications II, (16 December 1993); doi: 10.1117/12.164753
Show Author Affiliations
Richard C. Schirato, Science Applications International Corp. (United States)
Raulf M. Polichar, Science Applications International Corp. (United States)
John H. Reed, Science Applications International Corp. (United States)
Scott T. Smith, Science Applications International Corp. (United States)


Published in SPIE Proceedings Vol. 2009:
X-Ray Detector Physics and Applications II
Victor J. Orphan, Editor(s)

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