Design considerations for trapezoid-shaped Frisch-grid semiconductor radiation detectors

Douglas S. McGregor; J. R. Nishanth; David K. Wehe

doi:10.1117/12.407601

21 November 2000 Design considerations for trapezoid-shaped Frisch-grid semiconductor radiation detectors

Douglas S. McGregor, J. R. Nishanth, David K. Wehe

Proceedings Volume 4141, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II; (2000) https://doi.org/10.1117/12.407601
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Measurements with 60 keV gamma-rays from a ²⁴¹Am check source show that most of the volume of a trapezoidal Frisch grid device is active and operates as a detector. Measurements were performed on a trapezoidal device constructed from 'counter grade' CdZnTe material, which despite the lower quality of the starting material still demonstrated excellent energy resolution at relatively high gamma ray energies. The energy resolution was comprised at low energies, most likely due to surface effects and material non-uniformities. Models indicate that performance can be improved with very straightforward and simple design changes.

Citation Download Citation

Douglas S. McGregor, J. R. Nishanth, and David K. Wehe "Design considerations for trapezoid-shaped Frisch-grid semiconductor radiation detectors", Proc. SPIE 4141, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II, (21 November 2000); https://doi.org/10.1117/12.407601

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