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Proceedings Paper

Array of virtual Frisch-grid CZT detectors with common cathode readout and pulse-height correction
Author(s): A. E. Bolotnikov; G. S. Camarda; Y. Cui; S. U. Egarievwe; P. M. Fochuk; M. Fuerstnau; R. Gul; A. Hossain; F. Jones; K. Kim; O. V. Kopach; R. Taggart; G. Yang; Z. Ye; L. Xu; R. B. James
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Paper Abstract

We present our new results from testing 15-mm-long virtual Frisch-grid CdZnTe detectors with a common-cathode readout for correcting pulse-height distortions. The array employs parallelepiped-shaped CdZnTe (CZT) detectors of a large geometrical aspect ratio, with two planar contacts on the top and bottom surfaces (anode and cathode) and an additional shielding electrode on the crystal's sides to create the virtual Frisch-grid effect. We optimized the geometry of the device and improved its spectral response. We found that reducing to 5 mm the length of the shielding electrode placed next to the anode had no adverse effects on the device's performance. At the same time, this allowed corrections for electron loss by reading the cathode signals to obtain depth information.

Paper Details

Date Published: 27 August 2010
PDF: 12 pages
Proc. SPIE 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII, 780504 (27 August 2010); doi: 10.1117/12.861775
Show Author Affiliations
A. E. Bolotnikov, Brookhaven National Lab. (United States)
G. S. Camarda, Brookhaven National Lab. (United States)
Y. Cui, Brookhaven National Lab. (United States)
S. U. Egarievwe, Alabama A&M Univ. (United States)
P. M. Fochuk, Brookhaven National Lab. (United States)
Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
M. Fuerstnau, Brookhaven National Lab. (United States)
R. Gul, Brookhaven National Lab. (United States)
A. Hossain, Brookhaven National Lab. (United States)
F. Jones, Brookhaven National Lab. (United States)
K. Kim, Brookhaven National Lab. (United States)
O. V. Kopach, Brookhaven National Lab. (United States)
Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
R. Taggart, Brookhaven National Lab. (United States)
G. Yang, Brookhaven National Lab. (United States)
Z. Ye, Brookhaven National Lab. (United States)
L. Xu, Brookhaven National Lab. (United States)
Northwestern Polytechnic Univ. (China)
R. B. James, Brookhaven National Lab. (United States)


Published in SPIE Proceedings Vol. 7805:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII
Arnold Burger; Larry A. Franks; Ralph B. James, Editor(s)

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