A megavolt test stand for measuring cathode and anode emissions with nanosecond pulses

A new test stand has been constructed for measuring emissions from cathode and anode surfaces under high electrical stress in vacuum. An L-3 PulseRad is used as the generator to provide ~50-ns electrical pulses of up to 1 MV. The usual sealed glass x-ray tube has been replaced by a stacked ring insulator so that custom load hardware can be used with the generator [1].