An electrostatic spectrograph in the form of a truncated cylinder

An electrostatic spectrograph based on an energy analyzer in the form of a truncated cylinder is designed. The parameters of the device can vary in a wide range. The position of the focal line is found for the beam energies differing by one order of magnitude. The linear and specific energy dispersions are determined. The performance of the spectrograph suggested is compared with that of a conventional spectrograph with two planar electrodes.