Pulsed modulator for an IEC neutron source

This paper discusses the design and construction of a 1/10^th scaled prototype pulse modulator for an IEC neutron source. The scaled prototype modulator has an output voltage of 13 kV and an output current of 10A. A significant feature of the modulator is that it has a variable pulse width (50 μs – 1ms) with ≪ 5% droop at all pulse widths. The modulator operates with a duty factor up to 5% and has a maximum pulse repetition frequency of 1 kHz. Preliminary test results are given.