Fine Structure of Angular Distribution of X-Ray Transition Radiation from Multilayered Radiator in Geant4
Journal of instrumentation(2020)
Abstract
The present version of the Transition Radiation (TR) simulation module implemented in the Geant4 toolkit describes very well experimental data for the TR energy distribution; however, it does not allow reproducing the details of angular distribution at small angles. In order to solve this problem, corrections to the existing x-ray TR module in Geant4 are proposed. With these corrections, the results of the simulations are in a good agreement with the angular TR distributions predicted by theory and obtained in the test beam measurements using a 480 um Si pixel detector and Mylar radiator.
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Key words
Cherenkov and transition radiation,Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc),Transition radiation detectors,Interaction of radiation with matter
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