Fine structure of angular distribution of x-ray transition radiation from multilayered radiator in Geant4

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, c...

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Published inJournal of instrumentation Vol. 15; no. 6; p. C06024
Main Authors Savchenko, A.A., Tishchenko, A.A., Sergeeva, D.Yu, Belyaev, N., Cherry, M., Dachs, F., Doronin, S., Filippov, K., Fusco, P., Gargano, F., Konovalov, S., Loparco, F., Mascagna, V., Mazziotta, M.N., Nechaeva, S., Ponomarenko, D., Romaniouk, A., Schioppa, E.J., Smirnov, S., Smirnov, Y., Soldani, M., Spinelli, P., Strikhanov, M.N., Teterin, P., Tikhomirov, V.O., Vorobev, K., Zhukov, K.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2020
Subjects
Angular distribution
Energy distribution
Fine structure
Modules
Mylar
Radiators
Toolkits
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Summary: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.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/15/06/C06024