CIRCULAR ACCELERATOR, PARTICLE BEAM THERAPY SYSTEM INCLUDING CIRCULAR ACCELERATOR, AND METHOD OF OPERATING CIRCULAR ACCELERATOR

摘要

PROBLEM TO BE SOLVED: To highly accurately control emission of a charged particle beam from a circular accelerator, in the circular accelerator where, by applying a high-frequency wave in a main magnetic field, a charged particle beam is accelerated while an orbital radius thereof is increased.;SOLUTION: In a circular accelerator where, by applying a high-frequency wave in a main magnetic field, a charged particle beam is accelerated while an orbital radius thereof is increased, the charged particle beam is emitted by applying, on the charged particle beam, a high-frequency wave having a frequency different from that of the high-frequency wave used in acceleration.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2019,JPO&INPIT