Oblique arrangement type high-energy ray detector of composite photosensor

Abstract

The embodiment of the invention discloses an oblique arrangement type high-energy ray detector of a composite photosensor, which comprises a scintillating crystal module, a composite photosensor array and a decoding module, wherein the scintillating crystal module is used for generating flare light and is formed by arranging strip-shaped scintillating crystal units along the width direction of the strip-shaped scintillating crystal unit; the composite photosensor array is used for detecting the flare light from the scintillating crystal module and outputting signals, and comprises a first groups of photosensors and a second group of photosensors, the size of the first group of photosensors is larger than that of the second group of photosensors, and the first group of photosensors are arranged in a diamond shape; and the decoding module is used for obtaining the space position and energy of the high-energy ray according to the signals from the composite photosensor array. According tothe high-energy ray detector provided by the invention, a smaller detection dead zone can be obtained via flexibly selecting the size of the photosensor, and different spatial resolutions can be obtained in two directions.

Description

technical field [0001] The invention relates to the field of radiation detection and imaging, in particular to a composite photosensitive device obliquely arranged high-energy ray detector. Background technique [0002] One of the commonly used detectors in high-energy ray detection technology is a scintillator detector. Scintillator detectors usually use a scintillation crystal that can effectively block and absorb electromagnetic radiation and produce luminescence with it as a detection material. When high-energy rays are incident into the scintillation crystal, according to the difference in ray energy, effective atomic coefficient and density of the scintillation crystal, different proportions of photoelectric effect, Compton scattering effect and electron pair effect will occur with the scintillation crystal, and the energy will be deposited in the scintillation crystal. , The excited scintillation crystal de-excites to emit weak scintillation light, and the de-excitat...

AI Technical Summary

Problems solved by technology

[0009] The disadvantage of the existing technology is that the spatial resolution obtained by traditional detectors in the X and Y directions is the same, and if the figure 1 , figure 2 and image 3 In the scintillation detector, there is a large detection dead zone between the photosensitive devices

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