Energy Resolution of a Spectrometer with an Oriented Crystal Converter

A single-crystal converter oriented along the axis is placed in front of an electromagnetic spectrometer to change the response of the spectrometer that measures electrons with energies of several tens of GeV. The relative energy resolution of the spectrometer is improved by 15−80% depending on the orientation, thickness, and type of the crystal converter and the spectrometer thickness at electron energies of 26 and 28 GeV.