Hybrid contacts for CZT virtual Frisch-grid detectors

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

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

2 Citations (Scopus)


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
Publication statusPublished - 2011
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
ISSN (Print)0277-786X


ConferenceHard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII
Country/TerritoryUnited States
CitySan Diego, CA


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

ASJC Scopus subject areas

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


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