A position energy time test system and device based on czt detector

Abstract

The invention relates to a position energy time testing device based on a CZT detector, which at least includes: a scintillation crystal array, one or several pixel detectors, and a dedicated readout ASIC, wherein, by using the determined pixel detector The corresponding relationship between the provided electronic pulse and the luminous intensity of the scintillation light generated by the scintillation crystal array under the incidence of radiation particles, at the level of the multi-pixel energy spectrum detector module, the dedicated readout ASIC can detect each The multiple scintillation events detected by the pixel detector respectively determine the relative time information of the corresponding ray-action detector, and gather multiple scintillation events from a single gamma photon, and perform temporal logic processing to identify those from Compton scattering The effective scintillation event of , output the scintillation event information including the relative time information of the ray action detector, the pixel energy spectrum information and the position information, and the time logically processed scintillation event information.

Description

technical field [0001] The invention relates to the technical field of radiation measurement, in particular to a position energy time test system and device based on a CZT detector. Background technique [0002] Cadmium zinc telluride (CZT) semiconductor is an excellent room temperature X-ray and γ-ray detection material. It is a wide bandgap II-VI compound semiconductor crystal formed by solid solution of CdTe and ZnTe. It is used in environmental monitoring, medical diagnosis, It has broad application prospects in many fields such as industrial non-destructive testing, safety inspection, and space science. Cadmium zinc telluride (CZT) semiconductors have at least the following advantages: 1. Cadmium zinc telluride (CZT) semiconductors are the only ones that can work at room temperature and can process millions to tens of millions of photons per second per square millimeter The sensitivity of semiconductors can reach the limit, and even the weak to almost no cosmic backgro...

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Problems solved by technology

[0008] The detectors disclosed in the above patent still cannot avoid the problem of the deviation of the modulation curve obtained by the system due to the fact that several detectors are set in different orientations and the opening angles are inconsistent with each other. It cannot avoid the trouble of offline correction of the modulation curve, which affects other System detection efficiency and energy resolution

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