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

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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 ... continued below

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Bolotnikov, A. E.; Camarda, G. S.; Cui, Y.; Egarievwe, E. U.; Fochuk, P. M.; Fuerstnau, M. et al. August 1, 2010.

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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.

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  • 2010 SPIE Optics + Photonics; San Diego, California; 20100801 through 20100805

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  • Report No.: BNL--93956-2010-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 1013506
  • Archival Resource Key: ark:/67531/metadc840015

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  • August 1, 2010

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  • May 19, 2016, 3:16 p.m.

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  • Dec. 6, 2017, 4:03 p.m.

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Bolotnikov, A. E.; Camarda, G. S.; Cui, Y.; Egarievwe, E. U.; Fochuk, P. M.; Fuerstnau, M. et al. Array of virtual Frisch-grid CZT detectors with common cathode readout and pulse-height correction, article, August 1, 2010; United States. (digital.library.unt.edu/ark:/67531/metadc840015/: accessed June 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.