Hybrid contacts for CZT virtual Frisch-grid detectors

G. S. Camarda, A. E. Bolotnikov, W. Chan, Y. Cui, R. Gul, A. Hossain, Kihyun Kim, G. Yang, R. B. James

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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.

Original languageEnglish
Title of host publicationHard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII
DOIs
Publication statusPublished - 2011 Nov 2
Externally publishedYes
EventHard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII - San Diego, CA, United States
Duration: 2011 Aug 222011 Aug 24

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8142
ISSN (Print)0277-786X

Conference

ConferenceHard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII
CountryUnited States
CitySan Diego, CA
Period11/8/2211/8/24

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Keywords

  • CZT
  • Frisch-grid detectors
  • hybrid anode
  • NSLS beamline X27B
  • X-ray response maps

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Camarda, G. S., Bolotnikov, A. E., Chan, W., Cui, Y., Gul, R., Hossain, A., ... James, R. B. (2011). Hybrid contacts for CZT virtual Frisch-grid detectors. In Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII [814202] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8142). https://doi.org/10.1117/12.896682