Spatial Calibration of Scintillator Light Output for Proton Radiography
https://doi.org/10.56304/S2079562922030460
Abstract
A technique for determining spatial heterogeneity of scintillator used for proton radiography developed. It based on registration of a proton beam images formed during passage of a beam through scintillator and approximation of beam cross-profile with two-dimensional Gaussian-like function. Results of spatial calibration for the lutetium silicate scintillator and the digital camera used on the proton microscope with the use of magnetic optics PUMA are presented. It is shown that taking into account spatial heterogeneity of the scintillator and the camera allows describing a beam profile in each pixel of a beam image with an accuracy of 0.7%. Results on fluctuation of a beam position, dimensions and shape at the scintillator plane presented. The proposed technique eliminates defects of a proton radiography images caused by the optical system and electro-optical shutter if registered signal depends linearly on beam intensity. It also eliminates or strongly suppresses defects resulted from efficiency variation of a charge-coupled camera.
About the Authors
N. S. Shilkin
Institute of Problems of Chemical Physics of the Russian Academy of Sciences
Russian Federation
Russian Federation
Chernogolovka, Moscow oblast, 142432
V. B. Mintsev
Institute of Problems of Chemical Physics of the Russian Academy of Sciences
Russian Federation
Russian Federation
Chernogolovka, Moscow oblast, 142432
D. S. Yuriev
Institute of Problems of Chemical Physics of the Russian Academy of Sciences
Russian Federation
Russian Federation
Chernogolovka, Moscow oblast, 142432
A. V. Kantsyrev
National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
Moscow, 128132
D. S. Kolesnikov
National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
Moscow, 128132
A. V. Bogdanov
National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
Moscow, 128132
V. A. Panyushkin
National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
Moscow, 128132
A. V. Scobliakov
National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
Moscow, 128132
R. O. Gavrilin
National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
Moscow, 128132
A. A. Golubev
National Research Centre “Kurchatov Institute”; JSC “Science and Innovations” SAEC “Rosatom”
Russian Federation
Russian Federation
Moscow, 128132; Moscow, 115035
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Review
For citations:
Shilkin N.S., Mintsev V.B., Yuriev D.S., Kantsyrev A.V., Kolesnikov D.S., Bogdanov A.V., Panyushkin V.A., Scobliakov A.V., Gavrilin R.O., Golubev A.A. Spatial Calibration of Scintillator Light Output for Proton Radiography. Nuclear Physics and Engineering. 2023;14(1):46-55. (In Russ.) https://doi.org/10.56304/S2079562922030460
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