Simulation of the Optical Parameters of Position-Sensitive Scintillation Detectors with an Organic Light Guide
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques(2023)
摘要
A new method for determining the coordinate in position-sensitive detectors with an organic light guide and silicon photomultipliers is described. This method differs from earlier used spectrum-shifting fibers or an array of photosensitive elements. It is based on the absorption of photons in the volume of the light guide and a reduction in the number of photons. Depending on the path length, the number of photons incident on the surface of the silicon photomultiplier varies. The optical parameters of a one-dimensional position-sensitive detector are simulated and the effect of the light-guide coating on the amount of light is shown. The simulation of a two-dimensional position-sensitive detector of two types is also carried out; the optical parameters and ratios of the radiation intensities of different ends of the light guide are determined. A technique for obtaining maps of intensity ratios and features of their use for determining the coordinates are described. The main features of the manufacture of detectors of this type and their influence on the resolution of the final detector are outlined.
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关键词
organic light,optical parameters,position-sensitive
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