Huge cathode-heating units for relativistic electron injectors and powerful electron-beam devices

摘要

The principles of creation of huge cathode-heating units with emitting surface a few hundred square centimeters are described. Proposed to use injector with thermionic cathode for forming the electron beam with current 500 to 1000 A and energy 500 keV. Emitting surface of this cathode should be a truncated cone form with a large diameter of 400 mm, slant height 30 mm, apex angle of 120 degrees and lateral surface 360 cm2. Suggested technological solutions for the manufacture of cathode preheating unit for the cathode.