Charged particle beam generator, charged particle irradiation system, method for operating charged particle beam generator and method for operating charged particle irradiation system

摘要

Provided are a charged particle beam generation apparatus, a charged particle beam irradiation apparatus, a particle beam therapy system, and a charged particle beam generation apparatus operating method capable of implementing injection of a charged particle beam into a circular accelerator at an arbitrary timing by setting a normal operation period of a linear accelerator to be larger than a shortest period and securing a stability of the beam. In timing control of controlling injecting, accelerating, emitting, and decelerating processes of a synchrotron (200), after an end of the emitting process, a linear accelerator (111) is allowed to stop repetition of an operation based on an after-end-of-emitting-process timing signal to be in a stand-by state and is allowed to be start the repetition of the operation in a constant period based on a master signal.

主权项

1. A charged particle beam generation apparatus comprising:
a linear accelerator which is operated in a predetermined operation period and accelerates charged particles emitted from an ion source to emit a charged particle beam; a circular accelerator which is operated in an operation period including time intervals of injecting, accelerating, emitting, and decelerating processes for the charged particle beam, further accelerates and emits the charged particle beam accelerated in the linear accelerator, the charged particle beam being injected in a predefined timing; and a control device which, after an end of the charged particle beam emitting process in the operation period of the circular accelerator, generates an after-end-of-emitting-process timing signal, stops the linear accelerator based on the after-end-of-emitting-process timing signal, generates a synchrotron pattern start signal indicating a next operation start timing, and starts a periodic operation of the linear accelerator based on the synchrotron pattern start signal.