Resonant Pulse Power Supply for Compact Proton And/or Heavy Ion Synchrotron

A resonant type pulse power supply, for an application to a compact proton and/or heavy ion synchrotron with a several Hz repetition rate, is attractive from the view point of attaining large average beam current that is enough for the radiation therapy. Maximum ampere-turn of the dipole magnet is as large as 200 kA to make the bending radius as small as possible. Pulse current is generated by discharging the stored energy in a capacitor bank through a pulse transformer. The current pulse width can be adjusted by the circuit elements including dipoles to a desired value to limit the heat load to the excitation coil. Its circuits and behaviors are treated for the realistic parameters.