HORI TOMOCHIKA,堀 知新,HANEE TAKAMITSU,羽江 隆光,AOKI TAKAMICHI,青木 孝道,SEKI TAKAYOSHI,関 孝義
申请号：
JP2018163888
公开号：
JP2020035728A
申请日:
2018.08.31
申请国别(地区):
JP
年份:
2020
代理人:
摘要：
To provide an energy-variable small particle beam accelerator that does not use a degrader and a particle beam therapy system including a particle beam accelerator.SOLUTION: A particle beam accelerator includes a main magnetic field magnet 1 that generates a static magnetic field, a high-frequency accelerating cavity 1037 whose frequency can be modulated and that applies a high-frequency electric field to accelerate the beam, and a high-frequency kicker 40 that applies a high-frequency electric field of a different frequency from the high-frequency acceleration cavity 1037, and in the main magnetic field magnet 1, in the surface facing an intermediate plane 2 of an upper magnetic pole 8 and a lower magnetic pole 9, concave portions 21a, 21b, 21c, and 21d and convex portions 22a, 22b, 22c, and 22d are alternately arranged in the beam circling direction, and the high-frequency kicker 40 is arranged in a space interposed between the concave portion 21a.SELECTED DRAWING: Figure 4【課題】ディグレーダを用いないエネルギー可変の小型粒子線加速器およびその粒子線加速器を備えた粒子線治療システムを提供する。【解決手段】静磁場を生成する主磁場磁石１と、周波数が変調可能で、ビームを加速するための高周波電場を印加する高周波加速空洞１０３７と、高周波加速空洞１０３７とは異なる周波数の高周波電場を印加する高周波キッカ４０と、を備え、主磁場磁石１のうち、上部磁極８，下部磁極９の中間平面２に対向する面には、ビーム周回方向に沿って凹部２１ａ，２１ｂ，２１ｃ，２１ｄと凸部２２ａ，２２ｂ，２２ｃ，２２ｄとが交互に配置されており、高周波キッカ４０は、前記凹部２１ａに挟まれた空間に配置されている。【選択図】 図４
