Patent ID: 8637833

Claim:
An apparatus for cancer therapy using charged particles, comprising: a synchrotron, said synchrotron comprising: a set of n bending magnets configured to turn the charged particles in a circulation beam path during an acceleration phase of said synchrotron, wherein n is a positive integer of at least four; and a single power supply simultaneously electrically linked to all of said n bending magnets; a center, wherein the charged particle circulation beam path passes; about said center; through straight sections; and through turning sections, at least one inductor wrapped about a portion of each turning section; and an electric circuit configured to link said power supply to said inductor, said power supply configured to deliver a first voltage at a terminus of the acceleration phase to said inductor about said synchrotron, wherein said electric circuit comprises: at least one electric switch alternately configurable in an open position and in a closed position; and at least one resistor, said switch configured in said open position to direct current through said resistor during a recovery period following the terminus of the acceleration phase, wherein each of said turning sections comprises a plurality of said bending magnets, and wherein a number of said straight sections equals a number of said turning sections.