A Quasi-Monochromatic Calibration Beam of Secondary Electrons at the Pakhra Accelerator. - Alekseev, V. I.; Baskov, V. A.; Dronov, V. A.; L'vov, A. I.; Krechetov, Yu. F.; Malinovsky, E. I.; Pavlyuchenko, L. N.; Polyansky, V. V.; Sidorin, S. S. (Instruments & Experimental Techniques, 2019)