Development of electron-optical system with convergent sheet beam for terahertz TWT

The results of modeling by synthesis and analysis a convergent sheet electron beam with a cross section of 0.05 2 mm
²
and a current density of 200 A/cm
²
with magnetic shielding of the cathode are presented. Experimental investigations of the current-voltage characteristic of an electron gun in a pulsed mode are conducted, where collector current is 200 mA, and the measured beam thickness is 70 μm.