|発明の名称||PARTICLE ACCELERATOR, ITS OPERATION METHOD, AND PARTICLE BEAM IRRADIATION THERAPY DEVICE|
PROBLEM TO BE SOLVED: To provide a particle accelerator capable of reducing an operation time for providing a required irradiation amount, and effective for improvement of utilization efficiency and reduction of irradiation cost of a charged particle beam; its operation method; and a particle beam irradiation therapy device equipped with the particle accelerator.
SOLUTION: Multiple times of extraction cycles each executing, after an entering process of entering charged particles in to a synchrotron, an acceleration or deceleration process of accelerating or decelerating the charged particles to predetermined energy in a high-frequency acceleration cavity while revolving them on an orbit in the synchrotron, and an emission process of emitting the accelerated charged particles from the synchrotron are executed to accelerate the charged particles to energy values different from one another in the respective processes; and the charged particles accelerated to the energy values different from one another are emitted in the emission processes in the extraction cycles of the acceleration or deceleration processes.
- 放射線医学総合研究所 企画部研究推進課
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