| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a means for confirming the irradiation positions of particle beams with one sort of equipment in a particle beam irradiation system which enables the application of two or more types of particle beams. <P>SOLUTION: The system includes a particle beam generator to generate two or more kinds of particle beams, irradiation equipment to emit particle beams onto an object to be irradiated, gamma-ray detectors 203a and 203b to detect the gamma rays generated from the object to be irradiated on the basis of the particle beams emitted from the irradiation equipment, a signal processor 209 to determine whether gamma-ray detection signals from the gamma-ray detectors 203a and 203b arise from prompt gamma rays or pair annihilation gamma rays, and an irradiation field confirmation device which finds a field irradiated with the particle beams from the gamma-ray detection signals determined to arise from the prompt gamma rays by the signal processor 209 and obtains a field irradiated with the particle beams from the gamma-ray detection signals determined to be arise from the pair annihilation gamma rays. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
