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Proceedings Paper

Hybrid contacts for CZT virtual Frisch-grid detectors
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Paper Abstract

In our previous design of virtual Frisch-grid CdZnTe (CZT) detectors, the charge drift-lines can be terminated at the side surfaces before the carriers reach the collecting anode; this results in a loss of signal from the interacting events near the detector's edges. Here, we describe our new design for the anode contact that reduces these edge effects by focusing the electric field towards the detectors' central axes. Four detectors were fabricated with the new hybrid anode contact, and their performances were evaluated and compared to those from the previous design for our virtual Frisch-grid detectors. The results obtained for all four showed similar improvement: therefore, we illustrate them with the findings from one detector.

Paper Details

Date Published: 22 September 2011
PDF: 6 pages
Proc. SPIE 8142, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII, 814202 (22 September 2011); doi: 10.1117/12.896682
Show Author Affiliations
G. S. Camarda, Brookhaven National Lab. (United States)
A. E. Bolotnikov, Brookhaven National Lab. (United States)
W. Chan, Alabama A&M Univ. (United States)
Y. Cui, Brookhaven National Lab. (United States)
R. Gul, Brookhaven National Lab. (United States)
A. Hossain, Brookhaven National Lab. (United States)
K. Kim, Brookhaven National Lab. (United States)
G. Yang, Brookhaven National Lab. (United States)
R. B. James, Brookhaven National Lab. (United States)

Published in SPIE Proceedings Vol. 8142:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII
Larry A. Franks; Ralph B. James; Arnold Burger, Editor(s)

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