Title

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

Authors

A. A. Savchenko, National Research Nuclear University MEPhI
A. A. Tishchenko, National Research Nuclear University MEPhI
D. Yu Sergeeva, National Research Nuclear University MEPhI
N. Belyaev, National Research Nuclear University MEPhI
M. Cherry, Louisiana State University
F. Dachs, European Organization for Nuclear Research
S. Doronin, National Research Nuclear University MEPhI
K. Filippov, National Research Nuclear University MEPhI
P. Fusco, Università degli studi di Bari Aldo Moro
F. Gargano, Istituto Nazionale di Fisica Nucleare, Sezione di Bari
S. Konovalov, P.N. Lebedev Physical Institute of the Russian Academy of Sciences
F. Loparco, Università degli studi di Bari Aldo Moro
V. Mascagna, Istituto Nazionale di Fisica Nucleare, Sezione di Milano-Bicocca
M. N. Mazziotta, Istituto Nazionale di Fisica Nucleare, Sezione di Bari
S. Nechaeva, National Research Nuclear University MEPhI
D. Ponomarenko, National Research Nuclear University MEPhI
A. Romaniouk, National Research Nuclear University MEPhI
E. J. Schioppa, European Organization for Nuclear Research
S. Smirnov, National Research Nuclear University MEPhI
Y. Smirnov, National Research Nuclear University MEPhI
M. Soldani, Istituto Nazionale di Fisica Nucleare, Sezione di Milano-Bicocca
P. Spinelli, Università degli studi di Bari Aldo Moro
M. N. Strikhanov, National Research Nuclear University MEPhI
P. Teterin, National Research Nuclear University MEPhI
V. O. Tikhomirov, P.N. Lebedev Physical Institute of the Russian Academy of Sciences
K. Vorobev, National Research Nuclear University MEPhI
K. Zhukov, P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Document Type

Article

Publication Date

6-1-2020

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.

Publication Source (Journal or Book title)

Journal of Instrumentation

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