PARTICLE BEAM IRRADIATION SYSTEM AND METHOD FOR OPERATING THE SAME

摘要

Operation control data of each of the constituent sub-units of a synchrotron is constructed by a combination of module data items (initial acceleration data item, plural energy change data items, and a deceleration control data item), corresponding to plural control intervals, respectively. A control start value, a control completion value, and a computing function for connecting the control start value with the control completion value are expressed in each of module data items. Further, the plural module data items are corrected on the basis of a correction data item of a residual field, and a power-supply control command value is sequentially outputted. By preparing correction table data of the residual field, expressed by irradiation energy and irradiation stage numbers of the irradiation energy beforehand, the correction table data items of the plural module data items are selected from the correction table data to be prepared.

主权项

1. A particle beam irradiation system comprising:
a synchrotron for accelerating an ion beam to be extracted; a beam transport unit for transporting the ion beam extracted from the synchrotron; and an irradiation unit for executing irradiation with the ion beam transported by the beam transport unit, wherein operation control data of constituent sub-units of the synchrotron, and/or the beam transport unit is constructed by a combination of a plurality of module data items, corresponding to plural control intervals, respectively, and a control device is provided whereby the plural module data items are corrected by use of a correction data item acquired from a correction table data of a residual field, expressed by an irradiation energy and an irradiation-stage number of the irradiation energy, and a power-supply control command value is sequentially outputted to the constituent sub-units of the synchrotron, and/or the beam transport unit on the basis of the plural module data items as corrected.