Rotating-disc type high voltage generator

A very compact electrostatic generator, making use of a rotating insulator disc equipped with charge-carrying metallic pieces in an SF6 atmosphere, has been constructed and used for a preacceleration voltage source of a tandem accelerator. The maximum usable voltage is 400 kV, generating a current of 500 μA. The charge transfer to and from the moving charge carriers at the ground and high voltage terminals is performed by means of a contact with running conducting rubber belts. (orig.)