Abstract
A technique for determining the transverse sizes of a beam on a target from the two-dimensional angular distributions of the radiation for two distances between the emitting crystal and a coordinate detector is proposed. The desired sizes are obtained from the results of fitting, in which the fitted function is the distribution at a shorter distance and the fitting function is the convolution of the angular distribution at a greater distance with a two-dimensional Gaussian distribution with the parameters uniquely related to the beam sizes on the target and crystal-to-detector distance. The limits of applicability of the proposed technique are determined.
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ACKNOWLEDGMENTS
This study was supported in part by the Japan Society for the Promotion of Science KAKENHI, project no. JP17K05483.
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Translated by E. Bondareva
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Vnukov, I.E., Goponov, Y.A., Sidnin, M.A. et al. Measuring the Transverse Sizes of an Electron Beam by the Angular Distribution of the Coherent Radiation of Electrons in a Crystal. J. Surf. Investig. 13, 515–524 (2019). https://doi.org/10.1134/S1027451019030340
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DOI: https://doi.org/10.1134/S1027451019030340