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Title Fine structure of angular distribution of x-ray transition radiation from multilayered radiator in Geant4
Author(s) Savchenko, A A (Moscow Phys. Eng. Inst. ; Kurchatov Inst., Moscow ; Belgorod State U.) ; Tishchenko, A A (Moscow Phys. Eng. Inst. ; Kurchatov Inst., Moscow ; Belgorod State U.) ; Sergeeva, D Yu (Moscow Phys. Eng. Inst. ; Kurchatov Inst., Moscow ; Belgorod State U.) ; Belyaev, N (Moscow Phys. Eng. Inst.) ; Cherry, M (CERN) ; Dachs, F (CERN ; Vienna U.) ; Doronin, S (Moscow Phys. Eng. Inst.) ; Filippov, K (Moscow Phys. Eng. Inst.) ; Fusco, P (Bari U. ; INFN, Bari) ; Gargano, F (INFN, Bari) ; Konovalov, S (Lebedev Inst.) ; Loparco, F (Bari U. ; INFN, Bari) ; Mascagna, V (INFN, Milan Bicocca ; Insubria U., Como) ; Mazziotta, M N (INFN, Bari) ; Nechaeva, S (Moscow Phys. Eng. Inst.) ; Ponomarenko, D (Moscow Phys. Eng. Inst.) ; Romaniouk, A (Moscow Phys. Eng. Inst.) ; Schioppa, E J (CERN) ; Smirnov, S (Moscow Phys. Eng. Inst.) ; Smirnov, Y (Moscow Phys. Eng. Inst.) ; Soldani, M (INFN, Milan Bicocca ; Insubria U., Como) ; Spinelli, P (Bari U. ; INFN, Bari) ; Strikhanov, M N (Moscow Phys. Eng. Inst.) ; Teterin, P (Moscow Phys. Eng. Inst.) ; Tikhomirov, V O (Lebedev Inst.) ; Vorobev, K (Moscow Phys. Eng. Inst.) ; Zhukov, K (Lebedev Inst.)
Publication 2020
Number of pages 11
In: JINST 15 (2020) C06024
In: 13th Radiation from Relativistic Electrons in Periodic Structures, Belgorod, Russian Federation, 16-20 Sep 2019, pp.C06024
DOI 10.1088/1748-0221/15/06/C06024
Subject category Detectors and Experimental Techniques
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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