Abstract: An over-voltage protection system for an accelerator can include: a plurality of DC power supplies configured to provide a plurality of voltage levels up to a desired voltage level; and an acceleration tube electrically connected to the plurality of DC power supplies and configured to accelerate a charged particle. The acceleration tube can include a plurality of stages. Each stage can include a plurality of electrodes and a plurality of varistors configured to discharge energy in response to an overvoltage event. One electrode of the plurality of electrodes can be electrically coupled to a voltage level of the plurality of voltage levels. The plurality of electrodes and the plurality of varistors can be electrically coupled to each other and arranged in an alternating fashion.

Abstract: An over-voltage protection system for an accelerator can include: a plurality of DC power supplies configured to provide a plurality of voltage levels up to a desired voltage level; and an acceleration tube electrically connected to the plurality of DC power supplies and configured to accelerate a charged particle. The acceleration tube can include a plurality of stages. Each stage can include a plurality of electrodes and a plurality of varistors configured to discharge energy in response to an overvoltage event. One electrode of the plurality of electrodes can be electrically coupled to a voltage level of the plurality of voltage levels. The plurality of electrodes and the plurality of varistors can be electrically coupled to each other and arranged in an alternating fashion.