V. Grinberg et al., LOW-COST ELECTRON-GUN PULSER FOR TABLE-TOP MASER EXPERIMENTS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 358(1-3), 1995, pp. 327-330
A simple 10 kV electron-gun pulser for small-scale maser experiments i
s presented. This low-cost pulser has operated successfully in various
table-top cyclotron-resonance maser (CRM) and free-electron maser (FE
M) experiments. It consists of a low-voltage capacitor bank, an SCR co
ntrol circuit and a transformer bank (car ignition coils) connected di
rectly to the e-gun. The pulser produces a current of 3 A at 10 kV vol
tage in a Gaussian like shape of 1 ms pulse width. The voltage sweep d
uring the pulse provides a useful tool to locate resonances of CRM and
FEM interactions. Analytical expressions for the pulser design and ex
perimental measurements are presented.