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- W2187739998 abstract "The 4 th -generation readout systems based on VAS_UM/TAT4 ASICs for 3-D position sensitive CdZnTe/HgI2 detector arrays have been developed and tested. Each VAS_UM/TAT4 chip is a 129-channel self-triggered monolithic application specific integrated circuitry (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 × 2.2 cm 2 front-end board. Each detector has an array of 11 by 11 pixel anodes fabricated on the anode surface with an area up to 2 by 2 cm 2 . The detector and the front-end board are connected by three pairs of 42-pin connectors for easy assemble and component replacement. Up to nine detector modules can be plugged in to a single motherboard to form a 3 by 3 detector array. The VAS_UM/TAT4 chip can read out both the amplitude of induced charge on each electrode and the electron drift time needed for reconstructing energy deposition and three- dimensional coordinates of each radiation interaction. Three different sets of VAS_UM/TAT4 chips were fabricated - the first set is for intermediate energy gamma-ray spectroscopy on CdZnTe with a dynamic range up to 1 MeV per channel. The second set is for higher-energy gamma-ray detection in CdZnTe for energy deposition of up to 3 MeV per channel, and the third set is for HgI2 gamma-ray spectrometers (up to 1 MeV per channel). These are the first ASIC readout system that allow multiple 3-D position sensitive CdZnTe/HgI2 detector modules to be tiled together, to achieve detection volume greater than 50 cm 3 on a single detector plane. Multiple planes of detector arrays can be operated together to achieve more than 100 cm 3 detection volume and beyond on a single system. In this paper, VAS_UM/TAT4 ASIC systems are described and their test results will be reported." @default.
- W2187739998 created "2016-06-24" @default.
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- W2187739998 date "2005-01-01" @default.
- W2187739998 modified "2023-09-27" @default.
- W2187739998 title "VAS_UM/TAT4 ASIC Readout Systems for 3D CdZnTe/HgI 2 Detector Arrays" @default.
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