Improved version of the triode electron gun

Results of the triode electron gun which delivers 500 mA current pulses of 2 μs duration at an energy of 40 keV are presented. This new gun uses LaB6 cathode as emitter indirectly heated by a tungsten filament, a focusing electrode, non-intercepting modulating anode and anode. Various improvements and additions carried out to the earlier gun which delivered only 120 mA current pulses is described.