ELECTRON BEAM PROJECTOR PROVIDED WITH A LINEAR THERMIONIC EMITTING CATHODE FOR ELECTRON BEAM HEATING.

摘要

The invention relates to electron beam devices. The inventive electron beam gun comprises a beam waveguide and an accelerating anode fixed thereto. Said accelerating anode is connected with the aid of high-voltage insulators and through a cathode plate to a cathode assembly. Said cathode assembly comprises a linear hot cathode fixed with the aid of two cathode carriers and a focussing electrode which is coaxially arranged with respect to the linear hot cathode and encompasses it with the aid of a two-sided surface. The beam waveguide is separated from the accelerating anode with the aid of rack panels which rigidly fix the accelerating anode to the beam waveguide in such a way that a space is formed therebetween. In order to hermetically separate cathode and anode parts of the projector, the accelerating anode is provided with a plate rigidly connected thereto. The cathode assembly comprises two identical current conductors fixed to the focussing electrode with the aid of annular insulators and connected to the cathode carriers by means of four flat springs and copper current-conducting plates which are disposed in a parallel position thereto. The cathode assembly is embodied and fixed to the cathode plate in symmetrical position with respect to the vertical axis of the focussing electrode.