The procedure for measuring the energy of a nonmonochromatic electron beam by the method of attenuating bremsstrahlung by an absorbing barrier is simulated using the analytical expression for the bremsstrahlung spectrum. The energy value measured by this method is compared with the mean energy and energy of the maximum of the electron beam spectrum. It is shown that the energy estimate obtained by the attenuation barrier method depends on the form of the electrons energy spectrum and is closer to the average energy than to the energy of the maximum of the spectrum, which, as a rule, is the main optimized parameter in calculating beam dynamics in the accelerator.
29.27.Fh Beam characteristics
$^1$M.V.Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics (SINP MSU)\
$^2$"Laboratory of electron accelerators MSU Ltd" ("LEA MSU Ltd")
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