Beam monitor system and particle beam irradiation system

Abstract

A charge collection electrode is formed of a plurality of groups each of which is made up of a plurality of adjoining wire electrodes. Further, all the wire electrodes are connected to channels of a signal processing device 22 by the same number of lines as the wire electrodes belonging to one group so that each detection signal outputted from one wire electrode selected from each group is inputted through the same line and so that no two adjoining channels are physically continuous in regard to a certain set of consecutive measurement channels. The signal processing device 22 determines group information indicating to which group the wire electrodes that sent the inputted detection signals belong and outputs a processing signal including the group information to a beam monitor controller 8b2. The beam monitor controller 8b2 determines the position and the beam width of the charged particle beam 12 that passed through the wire electrodes.

Description

technical field [0001] The present invention relates to a beam monitoring system for monitoring the beam position in a charged particle beam (particle beam) irradiation system, and particularly relates to a particle beam suitable for irradiating an affected part with a particle beam such as protons or carbon ions for treatment A beam monitoring system for a particle beam irradiation system of a therapeutic device. Background technique [0002] There are known therapeutic methods of irradiating charged particle beams (particle beams, ion beams) such as protons and carbon ions to affected parts of patients with cancer or the like. A particle beam irradiation system used for this treatment includes a charged particle beam generator. The ion beam accelerated by the charged particle beam generating device passes through the first beam conveying system and the second beam conveying system arranged on the rotating platform to reach the irradiation device arranged on the rotating p...

AI Technical Summary

Problems solved by technology

In spot position monitors, signal amplifiers and signal processing devices are required along with the number of channels, and signal amplification and signal processing are performed on all channels in beam position and width detection. Therefore, there is a problem that the more channels are increased The larger the monitoring system is, the more complicated the structure becomes, and the cost becomes higher.

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