[en] Studied is the dependence of the pulse amplitude being received from the Cherenkov total absorption spectrometer on the thickness of the lead converter located before it. Considered is the possibility of increase of the accuracy of determination of the electron-proton shower energy by the Cherenkov total absorption spectrometer together with spark chambers. It is established experimentally that the best correlation between the number of particles registered by spark chambers and energy released in the Cherenkov counter is obtained under the condition taking into account the sum of particles in all sections, but not a number of particles after their passage through the total converter layer. The formulas allowing to calculate the true energy of the incident electrons and protons are obtained empirically