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This work investigate the full energy and total efficiencies of large volume CdZnTe detectors. The efficiencies of three 20 mm × 20 mm × 15 mm pixelated CdZnTPe detectors were measured using the H3Dv2 Application Specific Integrated Circuit (ASIC) readout system developed by Brookhaven National Laboratory with un-collimated 241Am, 137Cs, and 60Co sources. One detector was made by eV-Products while...
Due to the steering grid that aids the collection of electrons by the anode pixels, the common-grid pixelated CdZnTe (CZT) detectors have demonstrated better performance than simple pixel detectors. For a detailed analysis of charge sharing and weighting potential cross-talk that occurs near and underneath the gap and energy resolution degradation in common-grid CZT detectors, a detailed detector...
A 3-dimensional position-sensitive CdZnTe gamma-ray detector employs a pixellated anode (11 ?? 11 pixels) and a planar cathode on a 15 ?? 15 ?? 10 mm3 or 20 ?? 20 ?? 15 mm3 CdZnTe single crystal. The signals from the 121 pixels and the cathode read out by Application Specific Integrated Circuits (ASIC) are used to reconstruct the energy depositions and 3-D coordinates of multiple gamma-ray interactions...
The 4th-generation readout system based on VAS_UM/TAT4 ASICs for 3-D position sensitive CdZnTe/HgI2 detector arrays has been developed and tested. Each VAS_UM/TAT4 chip is a 129-channel self-triggered monolithic Application Specific Integrated Circuit (ASIC). One 3-D position-sensitive detector module consists of one CdZnTe or HgI2 gamma-ray spectrometer, and one VAS_UM/TAT4 ASIC mounted on a 2.2...
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