Super-high-power repetitive-pulse generators with plasma opening switches (Review)

The review considers a new trend in accelerator engineering-repetitive gene rators of electron beams and X-radiation based on plasma opening switches ( POSs) and capable of operating in the repetitive pulse mode. The main resul ts of studying POSs are presented, as well as circuits and design features of repetitive-pulse generators in the megavolt range. Prospects for the dev elopment of POS-based pulsed-power accelerators, their ultimately attainabl e parameters, service life duration, cost, and possible application fields are considered. It is shown that the record maximal peak dose rate of such accelerators may substantially enhance the efficiency of radiation-biology technologies. The review can be useful for specialists in the field of high -power pulse engineering and current opening switches, as well as for devel opers of new techniques on the basis of high-power accelerators.