公开(公告)号：US20240306286A1

公开(公告)日：2024-09-12

申请号：US18276094

申请日：2021-12-23

Applicant: HITACHI, LTD.

Inventor： Takamichi AOKI ,  Takayoshi SEKI ,  Yuto NAKASHIMA

IPC: H05H13/10 ,  A61N5/06 ,  A61N5/10

CPC classification number: H05H13/10 ,  A61N5/103 ,  A61N5/1077 ,  A61N2005/0626 ,  A61N2005/1087 ,  H05H2277/11

Abstract: As the ion beam is accelerated, the radii of the closed orbits gradually increase, and the centers thereof move in a direction approaching the peripheral edge portion along a predetermined radial direction of the cavity, and upon reversing the direction of movement, move further toward the center of the cavity. The intensity distribution in the orbital plane of the main magnetic field is designed to realize the foregoing feature. Thus, an accelerator is provided that is compact and that enables the energy of an extracted beam to be changed, that enhances the efficiency of beam injection into the accelerator from an external ion source, and that improves a dose rate of the resulting extracted ion beam.

公开(公告)号：US12083362B2

公开(公告)日：2024-09-10

申请号：US17058200

申请日：2019-05-24

Applicant: WIP INNOVATIONS PTY LTD

Inventor： Jonathan Michael Watts

IPC: A61N5/10 ,  H05H7/00 ,  H05H7/22 ,  H05H9/04

CPC classification number: A61N5/1081 ,  A61N5/1075 ,  H05H7/22 ,  H05H9/04 ,  H05H2007/007 ,  H05H2277/11

Abstract: The invention relates to a drum assembly for a linear accelerator, the drum assembly comprising a drum having a front face including a front rim and a rear face including a rear rim, one or more support wheels supporting the drum, an arm extending from the front face of the drum and including a beam collimator through which a beam of radiation is emitted to form a radiation isocentre. One or more rear rim members are associated with the rear rim, the rear rim members adapted to substantially offset isocentre distortion due to unintended movement of the drum assembly. The invention also relates to variants thereto and combinations thereof.

公开(公告)号：US20240216717A1

公开(公告)日：2024-07-04

申请号：US18562858

申请日：2022-07-25

Applicant: HITACHI, LTD.

Inventor： Takayoshi SEKI

IPC: A61N5/10 ,  G21K5/04 ,  H05H13/00

CPC classification number: A61N5/1077 ,  G21K5/04 ,  H05H13/005 ,  A61N2005/1087 ,  H05H2277/11

Abstract: An ion source 3 includes a discharge chamber 36 for generating ions, gas pipes 24 and 25 for supplying a sample gas to the discharge chamber 36, and an extraction hole 37 for extracting the ions from the discharge chamber 36, and at least two discharge chambers 36 are arranged side by side. As a result, provided are a circular accelerator, a particle therapy system, and an ion source in which an operation rate and maintainability of an apparatus are improved as compared with the related art.

公开(公告)号：US20230232523A1

公开(公告)日：2023-07-20

申请号：US17997714

申请日：2021-04-30

Applicant: Elekta Limited

Inventor： Ian Shinton

IPC: H05H7/16 ,  H01P3/127

CPC classification number: H05H7/16 ,  H01P3/127 ,  H05H2277/11

Abstract: Disclosed herein is a waveguide cell having a helical cavity. The waveguide cell has a central axis and a cavity having a transverse cross section whose rotational position about the central axis varies along the central axis. There is also disclosed a method a determining the shape of a waveguide cell.

公开(公告)号：US20180104510A1

公开(公告)日：2018-04-19

申请号：US15847497

申请日：2017-12-19

Applicant: Faye Hendley Elgart ,  Nick Ruebel ,  Mark R. Amato ,  Nandish Desai ,  W. Davis Lee

Inventor： Faye Hendley Elgart ,  Nick Ruebel ,  Mark R. Amato ,  Nandish Desai ,  W. Davis Lee

IPC: A61N5/10 ,  H01J37/08

CPC classification number: A61N5/10 ,  A61N5/1043 ,  A61N5/1081 ,  A61N2005/1087 ,  H01J37/08 ,  H05H13/005 ,  H05H13/04 ,  H05H2007/046 ,  H05H2277/11

Abstract: The invention comprises a method and apparatus for scanning charged particles in a cancer therapy system, comprising the steps of: (1) providing a first and second dipole magnet system and a gap, the gap comprising a common gap length, along a path of the charged particles, within both the first and second dipole magnet systems, the gap comprising a progressively increasing x/y-plane cross-section area from an entrance area of the charged particles into the double dipole magnet system to an exit area of the double dipole magnet system, the x/y-plane perpendicular to a z-axis from a center of the entrance area to a center of the exit area; (2) scanning the positively charged particles along a first axis of the x/y-plane using the first dipole magnet system; and (3) scanning the positively charged particles along a second axis of the x/y-plane using the second dipole magnet system.

公开(公告)号：US20170339778A1

公开(公告)日：2017-11-23

申请号：US15533530

申请日：2014-12-08

Applicant: Hitachi, Ltd.

Inventor： Takamichi AOKI ,  Fuutarou EBINA ,  Masumi UMEZAWA ,  Shigemitsu HARA ,  Hideaki NISHIUCHI ,  Takayoshi SEKI

IPC: H05H7/04 ,  A61N5/10 ,  H05H13/04 ,  H05H7/10

CPC classification number: H05H7/04 ,  A61N5/10 ,  A61N5/1077 ,  A61N2005/1087 ,  H05H7/10 ,  H05H13/04 ,  H05H13/10 ,  H05H2007/045 ,  H05H2007/048 ,  H05H2277/11

Abstract: Ion beams are efficiently extracted with an accelerator that includes a circular vacuum container including a pair of circular return yokes facing each other. Six magnetic poles are radially disposed from the injection electrode at the periphery thereof in the return yoke. Six recessions are disposed alternately with the respective magnetic poles in the circumferential direction of the return yoke. In the vacuum container, a concentric trajectory region, in which multiple beam turning trajectories centered around the injection electrode are present, is formed, and an eccentric trajectory region, in which multiple beam turning trajectories eccentric from the injection electrode are present, is formed around the region. In the eccentric trajectory region, the beam turning trajectories are dense between the injection electrode and the inlet of the beam extraction path. Gaps between the beam turning trajectories are wide in a direction 180° opposite to the inlet of the beam extraction path.

公开(公告)号：US09642233B2

公开(公告)日：2017-05-02

申请号：US14123791

申请日：2012-06-08

Applicant: Soriba Franciszek (François) Sylla ,  Victor Armand Malka ,  Alessandro Federico Flacco ,  Mina Ivanova Veltcheva ,  Subhendu Kahaly

Inventor： Soriba Franciszek (François) Sylla ,  Victor Armand Malka ,  Alessandro Federico Flacco ,  Mina Ivanova Veltcheva ,  Subhendu Kahaly

IPC: H05G2/00 ,  H05H1/54 ,  H01J37/32 ,  A61B6/00 ,  H05H1/22

CPC classification number: H05G2/006 ,  A61B6/40 ,  H01J37/32009 ,  H01J37/32669 ,  H01J2237/152 ,  H01J2893/0063 ,  H05G2/00 ,  H05G2/001 ,  H05G2/003 ,  H05G2/008 ,  H05H1/22 ,  H05H1/54 ,  H05H2277/10 ,  H05H2277/11 ,  H05H2277/113

Abstract: A method and apparatus for generating a pulsed jet of fluid, and transforming the jet into a plasma. The method includes using a high-pressure rapid solenoid valve, and a pipe mounted on an outlet opening of the solenoid valve to produce a pulsed fluid jet which is sub-millimetric in size, and the atomic density of which is more than 1020 cm−3.

公开(公告)号：US09381378B2

公开(公告)日：2016-07-05

申请号：US14163143

申请日：2014-01-24

Applicant: HITACHI, LTD.

Inventor： Hideaki Nishiuchi

IPC: A61N5/10 ,  H05H13/04

CPC classification number: A61N5/1077 ,  A61N5/1043 ,  A61N2005/1087 ,  H05H13/04 ,  H05H2277/11

Abstract: 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.

Abstract translation: 分别对应于多个控制间隔的模块数据项（初始加速度数据项目，多个能量变化数据项目和减速度控制数据项目）的组合构成同步加速器的每个组成子单元的操作控制数据 。 控制开始值，控制完成值和用于将控制开始值与控制完成值连接的计算功能在每个模块数据项中表示。 此外，基于残留场的校正数据项来校正多个模块数据项，并且依次输出电源控制命令值。 通过预先准备由照射能量和照射级数表示的残留场的校正表数据，从要准备的校正表数据中选择多个模块数据项的校正表数据项。

公开(公告)号：US20150313001A1

公开(公告)日：2015-10-29

申请号：US14694567

申请日：2015-04-23

Applicant: Janusz HARASIMOWICZ ,  Ian Shinton

Inventor： Janusz HARASIMOWICZ ,  Ian Shinton

IPC: H05H7/22 ,  H05H7/02 ,  H05H9/00

CPC classification number: H05H7/22 ,  H05H7/02 ,  H05H9/00 ,  H05H9/048 ,  H05H2007/025 ,  H05H2007/227 ,  H05H2277/11

Abstract: A linear accelerator is disclosed, having a series of interconnected cavities through at least some of which an rf signal and an electron beam are sent, comprising at least one variable coupler projecting into the a cavity of the series, a control apparatus adapted to interpret an electrical signal from the coupler and derive diagnostic information as to the electron beam therefrom, wherein the control apparatus is further adapted to vary the interaction of the at least one coupler with the rf signal in dependence on the diagnostic information. Thus, the accelerator properties can be adjusted by encouraging or inciting an Higher-Order Mode (“HOM”) having a desired effect such as bunching and/or deflecting. The coupler could be rotateable, and partially or fully retractable, to allow its influence to be adjusted and/or for it to be removed from service when not needed. Several such probes could be available, approaching the cavity from different directions or at different locations, or approaching different cavities. The coupler can be asymmetric, in order to exert an appropriate influence on the cavity and provoke a useful HOM. For example, it can be elongate with at least one directional deviation, such as a hockey stick. Generally, however, the appropriate shape for the coupler will be dependent on the shape of the cavity with which it is working and the specific HOMs that are to be excited.

Abstract translation: 公开了一种线性加速器，其具有通过至少一些其中的一些RF信号和电子束被发送的一系列互连腔，包括突出到该系列的空腔中的至少一个可变耦合器，适于解释一个 来自耦合器的电信号，并从其中导出关于电子束的诊断信息，其中控制装置还适于根据诊断信息改变至少一个耦合器与rf信号的相互作用。 因此，可以通过鼓励或煽动具有期望效果的高阶模式（“HOM”）来调节加速器特性，例如聚束和/或偏转。 联接器可以是可旋转的，部分地或完全可缩回的，以允许其影响被调整和/或在不需要的时候使其脱离服务。 几个这样的探针可以是可用的，从不同方向或不同位置接近空腔，或接近不同的腔。 耦合器可以是不对称的，以便对腔体施加适当的影响并引起有用的HOM。 例如，它可以具有至少一个方向偏离的细长，例如曲棍球棒。 然而，通常，耦合器的适当形状将取决于其正在工作的空腔的形状和要激发的特定HOM。

公开(公告)号：US20140323793A1

公开(公告)日：2014-10-30

申请号：US14356629

申请日：2012-03-27

Applicant: Yukiko Yamada ,  Hisashi Harada ,  Taizo Honda ,  Masahiro Ikeda ,  Kazushi Hanakawa ,  Toshihiro Otani ,  Tadashi Katayose

Inventor： Yukiko Yamada ,  Hisashi Harada ,  Taizo Honda ,  Masahiro Ikeda ,  Kazushi Hanakawa ,  Toshihiro Otani ,  Tadashi Katayose

IPC: A61N5/10

CPC classification number: A61N5/1048 ,  A61N5/1043 ,  A61N5/1077 ,  A61N2005/1074 ,  A61N2005/1087 ,  H05H13/04 ,  H05H2277/11

Abstract: A control unit is provided with, a retaining section that retains a plurality of operation patterns each being a pattern of operation to be periodically repeated by an accelerator, the operation patterns having respective operation conditions adjusted for different emission times of an particle beam, to cause a deflection electromagnet in the accelerator to have an intended magnetic field intensity even under a presence of a hysteresis; a reading section for a plurality of slices of an irradiation target in a depth direction, which reads an irradiation condition for each of the slices; a selection section that selects the operation pattern suitable for each of the slices, on the basis of the read irradiation condition; and a main control section that controls, for each of the slices, the accelerator on the basis of the selected operation pattern and an irradiation device on the basis of the irradiation condition.

Abstract translation: 控制单元设置有保持部，其保持多个操作模式，每个操作模式是由加速器周期性重复的操作模式，所述操作模式具有针对粒子束的不同发射次数调整的各自的操作条件，以使得 加速器中的偏转电磁体即使在滞后的情况下也具有预期的磁场强度; 用于读取每个切片的照射条件的用于在深度方向上的照射目标的多个切片的读取部分; 选择部，其基于读取的照射条件选择适合于每个切片的操作模式; 以及主控制部，其基于所述照射条件，基于所选择的操作模式和照射装置对每个切片进行加速器的控制。