3D position sensing on UltraPeRL CdZnTe detectors

Donmez B., KIM J., HE Z.

IEEE Nuclear Science Symposium/Medical Imaging Conference, Hawaii, United States Of America, 26 October - 03 November 2007, pp.420-423, (Full Text) identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/nssmic.2007.4436361
  • City: Hawaii
  • Country: United States Of America
  • Page Numbers: pp.420-423
  • Akdeniz University Affiliated: No

Abstract

Experimental results of depth and lateral position sensing on UltraPeRL pixellated CdZnTe detectors using signal ratios are presented. Each detector employs one CdZnTe crystal of 20mm x 20mm x 5mm with 8 x 8 pixel electrodes fabricated on the anode surface. The anode pixel pitch is 2.4 mm. The signal ratios are calculated using the signals induced on the collecting pixel and the eight neighboring pixels. The signal on each collecting pixel is then corrected for depth of interaction using the signal ratios. We obtained 7.6%, 4.2% and 2.5% FWHM energy resolution at 122 keV, 356 keV and 662 keV, respectively.