Particle beam irradiation system and operating method

A particle beam irradiation system, comprising:

• a synchrotron constructed to accelerate and extract an ion beam;
• an irradiation apparatus adapted to irradiate the ion beam extracted from the synchrotron;
• a storage device in which control data that enables extraction of beams of all energy levels corresponding to irradiation parameters for a plurality of patients is stored as module data, the control data including a plurality of sets of initial acceleration control data, a plurality of sets of extraction control data, a plurality of sets of energy change control data, and a plurality of sets of deceleration control data that correspond to ion beams of a plurality of energy levels;
• a power supply controller configured to control devices constituting the synchrotron;
• and
• a particle beam irradiation system controller configured to select appropriate control data from the module data stored in the storage device when irradiation parameters for a specific patient are assigned for irradiation setup, store the selected control data into the power supply controller, and construct operating control data for the constituent devices of the synchrotron,
• wherein the operating control data comprises a plurality of sets of deceleration control data to enable rapid shifting to deceleration control from an energy level of the plurality of energy levels.

A method for operating a particle beam irradiation system comprising a synchrotron constructed to accelerate and extract an ion beam, and an irradiation apparatus adapted to irradiate the ion beam extracted from the synchrotron, the operating method comprising;

• constructing operating control data for devices constituting the synchrotron in such a manner as to control extraction of beams of a plurality of energy levels in one operating cycle of the synchrotron and to enable rapid shifting to deceleration control from an energy level of the plurality of energy levels;
• and
• controlling the constituent devices of the synchrotron by using the operating control data,
• wherein the operating control data comprises a plurality of sets of deceleration control data to enable the rapid shifting to deceleration control from an energy level of the plurality of energy levels.