LAUSR

The procedure of measurement of the brightness distribution of the hard X-ray source of the MIB-7.5 betatron with a penumbral aperture is detailed (i.e., a measurement algorithm and a calculation model are proposed). This measurement method involves reconstructing the brightness distribution of a source based on the radiation distribution in the penumbral region of a large circular collimator. The influence of the penumbral aperture diameter on the signal-to-noise ratio in the distribution of the source brightness is estimated. A parametric model of formation of the source X-ray pattern is presented. This model is based on a priori information on the measurement setting and the brightness distribution of the radiation source.