Background The PFN (pulsed forming network)-Marx generator shows robust capabilities for enhancing the output efficiency and miniaturization level of pulsed power system, and offers the most significant potential for compact and lightweight design.

Purpose This study aims to develop a compact PFN-Marx generator that is capable of generating high-power pulses with flat-top duration, while maintaining low output jitter.

Methods A tailored pulsed forming module (PFM) was developed by employing a non-uniform 2-section PFN, aiming for compact design. The influence of key circuit parameters on its output waveform was investigated. A PFN-Marx generator was designed and assembled by employing the PFMs and low-jitter gas switches with planar trigger electrode et al.

Results The effects of key circuit parameters on the pulse shaping was quantitatively researched, and waveform tailoring of the PFM was achieved. The PFM could output a high-voltage pulse with pulse width and flat-top duration (90%−90%) of about 150 ns and 80 ns, respectively. Once assembled into the Marx generator, it could deliver a 190 kV, 3.4 GW high pulsed power to a 10.6 Ω resistive load, while maintaining a flat-top duration of about 80 ns. When operating at a repetition rate of 50 Hz, it exhibits highly consistent output waveforms, with an output jitter as low as 2.4 ns.

Conclusions A compact PFN-Marx generator was developed by employing the compact high-voltage PFMs and low-jitter gas switches. It is helpful for the development of compact Marx generator with the required waveform and low output jitter.