Patent ID: 7042145

Claim:
Electron gum with a linear hot cathode for electron beam heating, which comprises a beam guide ( 1 ) with an accelerating anode ( 2 ) fastened on it, wherein the anode is connected to high-voltage insulators ( 3 ) through a cathodic plate ( 4 ) with a cathode assembly ( 5 ), wherein the cathode assembly comprises a linear hot cathode ( 6 ), fastened in two cathode-holders ( 7 ), and a focusing electrode ( 12 ), mounted co-axially and enclosing said linear hot cathode ( 6 ) by a two-face surface, characterized in that said beam guide ( 1 ) is separated from said accelerating anode ( 2 ) by posts ( 13 ), providing a rigid fastening of the accelerating anode on the beam guide and creation of a space between them, said accelerating anode incorporating a plate ( 14 ) rigidly connected to it for a vacuum-tight separation of the cathode and the beam guide part of the gun, and the cathode assembly ( 5 ) incorporating two similar current supplies ( 10 ) fixed to said focusing electrode ( 12 ) through ring insulators ( 11 ) and connected to the cathode-holders ( 7 ) by means of four flat springs ( 8 ) and copper current-conducting plates ( 9 ) that are located parallel to the flat springs ( 8 ), the cathode assembly ( 5 ) being made and fastened on the cathode plate 4 symmetrically relative to a vertical axis of focusing electrode ( 12 ).