FIELD: acceleration technology.
SUBSTANCE: invention relates to accelerator technology and is intended for use in the development of braking radiation sources based on electron accelerators and in the control of their parameters when used in flaw detection and industrial tomography of thick-walled objects. A method for determining the size of the focal spot of accelerator braking radiation includes multiple irradiation of a collimator consisting of sections with identical aperture diameters and a detector behind it with braking radiation from the accelerator target at a constant distance between the accelerator target and the collimator, measurement by the detector of the dose distributions of braking radiation behind the collimator depending on the coordinates and determination of the size of the focal spot by dose distributions depending on the length of the collimator.
EFFECT: simplification of the procedure for determining the size of the focal spot of braking radiation on the surface of the accelerator target.
1 cl, 3 dwg
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