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1. 发明申请

US20190126074A1 PARTICLE THERAPY SYSTEM 审中-公开
公开(公告)号：US20190126074A1
公开(公告)日：2019-05-02
申请号：US16158342
申请日：2018-10-12
申请人： Hitachi, Ltd.
发明人： Futaro EBINA
IPC分类号： A61N5/10 , H05H13/04 , H05H7/10 , H05H7/04
摘要： A particle therapy system in which the efficiency of extracting a beam from a synchrotron can be improved and time required for therapy can be shortened is provided. The synchrotron 10 of the particle therapy system 100 extracts a charged particle beam, which circulates in the synchrotron 10, out of the synchrotron 10 by means of a slow extraction method using the resonance of a betatron oscillation, and magnetic poles 73 included in a bending magnet 12 of the synchrotron 10 have a SIM structure that generates a magnetic field distribution that makes the horizontal tune of the charged particle more closely approach a resonant line used in the slow extraction method as the amplitude of the horizontal betatron oscillation of a charged particle included in the charged particle beam becomes larger.

2. 发明申请

US20170303384A1 ACCELERATOR AND PARTICLE BEAM IRRADIATION SYSTEM 审中-公开
公开(公告)号：US20170303384A1
公开(公告)日：2017-10-19
申请号：US15513584
申请日：2014-12-08
申请人： Hitachi, Ltd.
发明人： Takamichi AOKI , Futaro EBINA , Hideaki NISHIUCHI , Shigemitsu HARA , Masumi UMEZAWA , Takayoshi SEKI
IPC分类号： H05H13/00 , H05H13/04 , A61N5/10
CPC分类号： H05H13/005 , A61N5/1077 , A61N2005/1087 , H05H7/08 , H05H13/04 , H05H2277/11
摘要： The accelerator includes a circular vacuum container which contains a circular return yoke. With respect to the central axis of the vacuum container, an incidence electrode is arranged towards the entrance of a beam emission path inside of the return yoke. Inside of the return yoke, electrodes are arranged radially from the incidence electrode in the periphery of the incidence electrode. Recesses are arranged alternately with the electrodes in the circumferential direction of the return yoke. In the vacuum container, an orbit-concentric region is formed in which multiple beam orbits centered on the incidence electrode are present, and, in the periphery of said region, an orbit-eccentric area is formed in which multiple beam orbits eccentric to the incidence electrode are present. In the orbit-eccentric region, the beam orbits between the incidence electrode and the entrance to the beam emission path are denser.

3. 发明申请

US20160345422A1 CHARGED PARTICLE BEAM RADIATION SYSTEM, SYNCHROTRON, AND BEAM EJECTION METHOD THEREFOR 有权
标题翻译：充电颗粒光束辐射系统，同步光束和光束射出方法
公开(公告)号：US20160345422A1
公开(公告)日：2016-11-24
申请号：US15106876
申请日：2015-02-12
申请人： HITACHI, LTD.
发明人： Hideaki NISHIUCHI , Futaro EBINA , Satoshi TOTAKE , Takuya NOMURA , Kunio MORIYAMA
IPC分类号： H05H7/10 , H05H7/02 , A61N5/10 , H05H13/04
CPC分类号： H05H7/10 , A61N5/1048 , A61N5/1077 , A61N2005/1087 , H05H7/02 , H05H13/04
摘要： When controlling the ejection of a charged particle beam from a synchrotron, a radiofrequency voltage is applied, which serves as the radio-frequency voltage to be applied to an ejection radio-frequency electrode equipping the synchrotron, and which is constituted by a first radio-frequency voltage for increasing an oscillation amplitude in such a way as to exceed a stable limit in order to eject to the exterior of the synchrotron a beam that circles inside the synchrotron, and a second radio-frequency voltage for preferentially ejecting a charged particle beam that circles in the vicinity of the stable limit, with the amplitude value of the second radio-frequency voltage being controlled in such a way that the amplitude value is 0 prior to the beam ejection start, the amplitude value increases gradually from the beam ejection start, and, once a predetermined amplitude value has been reached, this value is maintained.
摘要翻译：当控制来自同步加速器的带电粒子束的喷射时，施加射频电压，其作为要施加到装备同步加速器的喷射射频电极的射频电压，并由第一射频电压构成，频率电压，以便以超过稳定极限的方式增加振荡幅度，以便向同步加速器的外部喷射圆周在同步加速器内的光束;以及第二射频电压，用于优先喷射带电粒子束，在稳定极限附近的圆圈，其中第二射频电压的振幅值被控制为在光束喷射开始之前振幅值为0，振幅值从射束开始逐渐增加，并且一旦达到预定的振幅值，就保持该值。

4. 发明申请

US20160213950A1 PARTICLE BEAM THERAPY SYSTEM, AND METHOD FOR OPERATING PARTICLE BEAM THERAPY SYSTEM 审中-公开
标题翻译：颗粒束治疗系统，以及操作粒子束治疗系统的方法
公开(公告)号：US20160213950A1
公开(公告)日：2016-07-28
申请号：US14976089
申请日：2015-12-21
申请人： Hitachi, Ltd.
发明人： Futaro EBINA , Hideaki NISHIUCHI
IPC分类号： A61N5/10
CPC分类号： A61N5/1048 , A61N5/1067 , A61N5/1077 , A61N2005/1087
摘要： When a beam acceleration high frequency control section turns on an accelerating cavity in synchronization with a beam irradiation on state, the beam acceleration high frequency control section rapidly increases an amplitude value of an applied voltage of the accelerating cavity. The control section rapidly decreases the amplitude value of the applied voltage of the accelerating cavity before beam irradiation off timing. When the control section turns off the accelerating cavity, the control section gradually decreases the amplitude value of the applied voltage of the accelerating cavity before the irradiation off timing. When the control section turns on the accelerating cavity and starts the beam irradiation, the control section gradually increases the applied voltage of the accelerating cavity.
摘要翻译：当光束加速度高频控制部与光束照射通过状态同步地接通加速腔时，光束加速度高频控制部快速增加加速腔的施加电压的振幅值。控制部分在光束照射时间之前快速降低加速腔的施加电压的振幅值。当控制部分关闭加速腔时，控制部分在照射时间之前逐渐减小加速腔的施加电压的振幅值。当控制部分接通加速腔并开始射束照射时，控制部分逐渐增加加速腔的施加电压。

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