Array of virtual Frisch-grid CZT detectors with common cathode readout and pulse-height correction

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

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

7 Citations (Scopus)

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.

Original languageEnglish
Title of host publicationHard X-Ray, Gamma-Ray, and Neutron Detector Physics XII
DOIs
Publication statusPublished - 2010
EventHard X-Ray, Gamma-Ray, and Neutron Detector Physics XII - San Diego, CA, United States
Duration: 2010 Aug 22010 Aug 4

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7805
ISSN (Print)0277-786X

Other

OtherHard X-Ray, Gamma-Ray, and Neutron Detector Physics XII
CountryUnited States
CitySan Diego, CA
Period10/8/210/8/4

Keywords

  • CdZnTe detectors
  • crystal defects
  • virtual Frisch-grid detectors

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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  • Cite this

    Bolotnikov, A. E., Camarda, G. S., Cui, Y., Egarievwe, S. U., Fochuk, P. M., Fuerstnau, M., Gul, R., Hossain, A., Jones, F., Kim, K., Kopach, O. V., Taggart, R., Yang, G., Ye, Z., Xu, L., & James, R. B. (2010). Array of virtual Frisch-grid CZT detectors with common cathode readout and pulse-height correction. In Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII [780504] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7805). https://doi.org/10.1117/12.861775