WO2017152470A1 - 一种同源双能加速器及加速器治疗装置 - Google Patents

一种同源双能加速器及加速器治疗装置 Download PDF

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WO2017152470A1
WO2017152470A1 PCT/CN2016/079235 CN2016079235W WO2017152470A1 WO 2017152470 A1 WO2017152470 A1 WO 2017152470A1 CN 2016079235 W CN2016079235 W CN 2016079235W WO 2017152470 A1 WO2017152470 A1 WO 2017152470A1
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energy
electrons
dual
accelerator
low
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PCT/CN2016/079235
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English (en)
French (fr)
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姚毅
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苏州雷泰医疗科技有限公司
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Priority to US15/552,581 priority Critical patent/US10231322B2/en
Publication of WO2017152470A1 publication Critical patent/WO2017152470A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H5/00—Direct voltage accelerators; Accelerators using single pulses
    • H05H5/02—Details
    • H05H5/03—Accelerating tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/103—Treatment planning systems
    • A61N5/1037—Treatment planning systems taking into account the movement of the target, e.g. 4D-image based planning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1048—Monitoring, verifying, controlling systems and methods
    • A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1077—Beam delivery systems
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H5/00—Direct voltage accelerators; Accelerators using single pulses
    • H05H5/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H9/00—Linear accelerators
    • H05H9/04—Standing-wave linear accelerators
    • H05H9/048—Lepton LINACS
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1048—Monitoring, verifying, controlling systems and methods
    • A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
    • A61N2005/1054—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using a portal imaging system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N2005/1092—Details
    • A61N2005/1095—Elements inserted into the radiation path within the system, e.g. filters or wedges
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
    • H05H7/001—Arrangements for beam delivery or irradiation
    • H05H2007/002—Arrangements for beam delivery or irradiation for modifying beam trajectory, e.g. gantries
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H2277/00—Applications of particle accelerators
    • H05H2277/10—Medical devices
    • H05H2277/11—Radiotherapy
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H9/00—Linear accelerators
    • H05H9/04—Standing-wave linear accelerators
    • H05H9/041—Hadron LINACS
    • H05H9/044—Coupling cavity LINACS, e.g. side coupled

Definitions

  • the invention relates to an accelerator treatment device, in particular to a homologous dual energy accelerator and an accelerator treatment device.
  • the rotation plane of the main frame is perpendicular to the horizontal plane
  • the rotation plane is an X plane
  • the rotation axis thereof is defined as a Z axis
  • the horizontal line perpendicular to the Z axis and intersecting is an X axis, and is perpendicular to the Z axis and the X axis, respectively.
  • the straight lines intersecting each other are the Y axis.
  • the Z axis and the Y axis establish a Y plane
  • the Y axis and the X axis establish an X plane
  • the Z axis and the X axis establish a horizontal plane (Z plane).
  • the current medical linear accelerator rotates the main accelerator to rotate the X-plane or a plane parallel thereto, the accelerator follows the main frame rotation, and the ray center axis of the emission is perpendicular to the rotation axis of the main frame. Intersect at one point, the isocenter.
  • the patient's lesion is placed at the isocenter, and the main frame is rotated, so that the accelerator rotates around the lesion in the X plane or its parallel plane, so that the radiation illuminates the lesion from different directions, so that better Kill the diseased cells.
  • the electron gun is connected with an accelerating tube, the accelerating tube is connected to the coupler, the coupler is connected to the waveguide through the waveguide window, the waveguide is connected with the microwave power source, the microwave power source is connected with the modulator, and the accelerating tube is provided with three energy a switch, three energy switches are respectively located between three acceleration cavities in the accelerating tube, each energy switch comprises a side coupling cavity and a detuning bar in the side coupling cavity, the outlet end of the accelerator is provided with a movable target; Controlling the output power of the microwave power source, and adjusting the length of the three detuning bars in the side coupling cavity, thereby adjusting the energy obtained by the electrons emitted by the electron gun in the accelerating tube, thereby obtaining KeV-level rays and MeV-class rays, thereby ensuring imaging,
  • the homologous coaxiality of the treatment improves the healing effect on the patient.
  • This scheme substantially accelerates the complexity of the tube control system, has poor stability, and is difficult to commercialize.
  • the other is a dual-source system, which integrates a KV-level accelerator on the existing MV-level accelerator system, so that the system has two different levels of radiation at the same time.
  • the system also has problems such as high cost and heavy structure.
  • an object of the present invention is to provide a homologous dual-energy accelerator and an accelerator treatment device which are simple in structure and reliable.
  • a homogenous dual-energy accelerator comprising: an electron-emitting device and an acceleration device, the electron-emitting device being located at an input end of the acceleration device, wherein the generated electrons are accelerated by the acceleration device and are emitted from the output end of the acceleration device, the homologous
  • the dual-energy accelerator further includes at least one separate deflection device disposed on an output side of the acceleration device for changing a portion of the electronic motion trajectory in the electrons accelerated by the acceleration device.
  • An advantage of the present invention is that the inventors have found that the speed and energy of all electrons are not exactly the same after the electrons are accelerated by the acceleration device.
  • the inventors have used this discovery to use a separate deflection device disposed on the output side of the acceleration device.
  • the electron trajectory of the lower energy level in the particles accelerated by the acceleration device is forcibly changed, and the electrons of different energy levels in the homologous electron beam are separated, thereby obtaining electron beams of two energy levels, wherein the high energy electron beam continues
  • the original path is used for radiation therapy, while the other low-energy electron beam is used to track lesions and detect treatment effects.
  • the separation deflection device comprises:
  • At least one set of separate deflection yoke assemblies disposed on an exit side of the acceleration device for deflecting a direction of movement of a portion of the electrons emitted from the acceleration device;
  • At least one set of deflection yoke assemblies are disposed on the path of the electrons of the yaw operating trajectory of the detached deflection yoke assembly to deflect the trajectories of the electrons again.
  • the homologous dual-energy accelerator is further provided with two targets of a high-energy target and a low-energy target, and the high-energy target is disposed on an operation path of electrons that do not change the motion track, and the low-energy target is disposed on the changed operation track.
  • the electronic path of operation is further provided with two targets of a high-energy target and a low-energy target, and the high-energy target is disposed on an operation path of electrons that do not change the motion track, and the low-energy target is disposed on the changed operation track.
  • the homologous dual-energy accelerator is further provided with a switching control device, and the switching control device includes: a low-energy switching device and a high-energy switching device; or only a high-energy switching device;
  • Low energy switching device for controlling whether low energy has an output
  • High-energy switching device for controlling whether high energy has an output.
  • the high-energy switching device is a high-energy shutter system that can block an electron beam emitted by the electron-emitting device from passing through or opening a through hole to pass an electron beam.
  • the low energy switching device is a low energy shutter system, which can block the low energy electron beam separated by the separating deflection device from passing through or opening the through hole to pass the low energy electron beam.
  • the low-energy switching device is an electronic switch, and the electronic switch is connected to the separating and deflecting device, and controls whether the low-energy electron beam has an output by controlling the magnetic field strength of the separating device or the power supply to be turned on and off.
  • the distance between the electronic trajectory deflected by the deflection yoke assembly and the trajectory of electrons not deviated from the original trajectory is no more than 2 cm.
  • the present invention also provides an accelerator treatment device including a treatment control device, a main frame, and the aforementioned homologous dual energy accelerator.
  • 1 to 2 are schematic views of the present invention.
  • a homogenous dual-energy accelerator 2 comprising: an electron-emitting device 21 and an acceleration device 22, the electron-emitting device 21 being located at an input end of the acceleration device 22, and the generated electrons are accelerated by the acceleration device 22 and output from the acceleration device 22
  • the homogenous dual-energy accelerator 2 further includes at least one separating deflection device 23 disposed on the output end side of the acceleration device 22 for changing a part of the electronic motion trajectory in the electrons accelerated by the acceleration device 22.
  • An advantage of the present invention is that the inventors have found that the speed and energy of all electrons are not exactly the same after the electrons are accelerated by the acceleration device.
  • the inventors have used this discovery to use the separation deflection device 23 to be disposed on the output side of the acceleration device 22.
  • the movement trajectory of the electrons of the lower energy level (low-level electron beam 25) in the particles accelerated by the acceleration device 22 is forcibly changed, and the electrons of different energy levels in the homologous electron beam are separated to obtain two kinds of energy.
  • a graded electron beam in which the high energy level electron beam 24 continues the original path for radiation therapy and the other low level electron beam 25 is used to track the lesion and/or detect the therapeutic effect.
  • the separation deflection device 23 can use an electromagnetic deflection coil to perform low-level electron beam deflection, which includes:
  • At least one set of split deflection yoke assembly 231 is disposed on an exit side of the acceleration device 22 for deflecting a direction of movement of a portion of the electrons emitted from the acceleration device 22;
  • At least one set of deflection yoke assemblies 232 are disposed on the path of the electrons that deflect the trajectory of the traversing deflection yoke assembly 231, causing the trajectories of the electrons to deflect again.
  • the homologous dual-energy accelerator is further provided with two targets of a high energy target and a low energy target, the high energy target being disposed on an operation path of electrons that do not change the motion track, the low energy target setting On the running path of the electrons whose trajectory is changed.
  • the homologous dual-energy accelerator is further provided with a switching control device, the switching control device comprising: a low-energy switching device and a high-energy switching device; or only a high-energy switching device;
  • Low energy switching device for controlling whether low energy has an output
  • High-energy switching device for controlling whether high energy has an output.
  • the meaning of the so-called output, for the application side, is whether there is an electron beam reaching the target or the patient's body.
  • the high energy switching device is a high energy shutter system that can block an electron beam emitted by the electron emitting device from passing through or opening a through hole to pass an electron beam.
  • the low energy switching device is a low energy shutter system that blocks low energy electron beams separated by the separated deflection device from passing through or opening through holes for low energy electron beams to pass through.
  • the low-energy switching device is an electronic switch, and the electronic switch is connected to the separating and deflecting device, and controls the low-energy electron beam by controlling the magnetic field strength of the separating device or the power supply to be turned on and off. Is there an output? The power supply of the separation deflecting device is turned off, so that it stops working, or the magnetic field strength thereof is lowered, so that the low-energy electron beam cannot change the trajectory, thereby equivalent to stopping the output of the special low-level electron beam. This makes it easy to control whether the low-level electron beam is used alone.
  • the distance between the electronic trajectory deflected by the deflection yoke assembly and the trajectory of electrons that are not offset from the original trajectory is no more than 2 cm.
  • the present invention also provides an accelerator treatment device including a treatment control device, a main frame, and the aforementioned homologous dual energy accelerator.

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Abstract

一种同源双能加速器（2）及包含该同源双能加速器（2）的治疗装置，包括：电子发射装置（21）和加速装置（22），所述电子发射装置（21）位于加速装置（22）的输入端，其产生的电子经加速装置（22）加速后从加速装置（22）的输出端射出，所述同源双能加速器（2）还包括至少一个分离偏转装置（23），设置于加速装置（22）的输出端一侧，用于使经过加速装置（22）加速后的电子中的部分电子运动轨迹发生改变。电子经加速装置（22）加速后，所有电子的速度及能量并不完全相同，使用设置于加速装置（22）输出端一侧的分离偏转装置（23），将经过加速装置（22）加速后的粒子中的部分能量等级较低的电子运动轨迹强制改变，将同源电子束中不同能级的电子进行分离，从而获得两种能级的电子束，其中高能电子束（24）继续原有路径，用于放射治疗，而另一路低能电子束（25）则用于跟踪病灶及检测治疗效果。

Description

一种同源双能加速器及加速器治疗装置 技术领域
本发明涉及加速器治疗装置，具体涉及一种同源双能加速器及加速器治疗装置。
背景技术
随着肿瘤放射学与材料科学的发展，作为治疗癌症的一种重要手段，放疗逐步迈入精确定位、精确计划、精确治疗的″三精″时代。设定主机架的旋转平面与水平面垂直时，该旋转平面为X平面，此时其转轴定义为Z轴，与Z轴垂直且相交的水平直线为X轴，与Z轴、X轴分别垂直且均相交的直线为Y轴。Z轴和Y轴确立Y平面，Y轴和X轴确立X平面，Z轴和X轴确立水平面(Z平面)。目前的医用直线加速器(放射治疗设备)通过主机架旋转带动加速器在X平面或与其平行的平面上旋转，所述加速器跟随主机架旋转，并且其发射的射线中轴线与主机架的旋转轴线垂直并相交于一点，即等中心点。一般来说，治疗时，将病患的病灶放置于等中心处，旋转主机架，使得加速器在X平面或其平行平面上围绕病灶旋转，从而使射线从不同的方向照射病灶，以更好的杀死患病细胞。
通常，由于病灶的位置会随病患的呼吸而发生位移，以及需要及时了解治疗情况，需要对病灶进行治疗前定位、治疗过程中的跟踪检测，以前是需要将病患置于不同的设备上进行，如在低能级的加速器设备上进行检测和定位，然后在高能级的加速器设备上进行治疗，最后再回到低能级的加速器设备上进行检测，观察治疗效果。为了克服上述技术方案的低效率及检测的及时性差等问题，目前有两种技术方案被公开，一种是同源双束方案，如公开号CN104188679A，该发明涉及一种同源双束医用加速器，包括电子枪，所述电子枪连接有加速管，加速管连接耦合器，耦合器通过波导窗连接有波导，波导连接有微波功率源，微波功率源连接有调制器，加速管上设置有三个能量 开关，三个能量开关分别位于加速管内的三个加速腔之间，每个能量开关包括边耦合腔和位于边耦合腔内的失谐棒，加速器的出口端设置有可移动靶；通过调制器控制微波功率源的输出功率，同时调整三根失谐棒在边耦合腔内的长度，从而调整电子枪发射出的电子在加速管内获得的能量，从而获取KeV级射线和MeV级射线，保证了成像、治疗的同源共轴，提高对患者的治愈效果。但是该方案实质上加速管控制系统复杂，稳定性差，难以商业化应用。另一种是双源系统，即在现有的MV级加速器系统上再集成一个KV级加速器，使得系统同时具备两种不同量级的射线，该系统也存在造价高、结构笨重等问题。
发明内容
为解决上述问题，本发明的目的在于提供一种结构简单、可靠的同源双能加速器及加速器治疗装置，。
为达到上述目的，本发明的技术方案是：
一种同源双能加速器，包括：电子发射装置和加速装置，所述电子发射装置位于加速装置的输入端，其产生的电子经加速装置加速后从加速装置的输出端射出，所述同源双能加速器还包括至少一个分离偏转装置，设置于加速装置的输出端一侧，用于使经过加速装置加速后的电子中的部分电子运动轨迹发生改变。
本发明的优点是，发明人发现电子经加速装置加速后，所有电子的速度及能量并不完全相同，发明人利用这一发现，使用分离偏转装置，设置于加速装置的输出端一侧，将经过加速装置加速后的粒子中的部分能量等级较低的电子运动轨迹强制改变，将同源电子束中不同能级的电子进行分离，从而获得两种能级的电子束，其中高能电子束继续原有路径，用于放射治疗，而另一路低能电子束则用于跟踪病灶，及检测治疗效果。
进一步的，所述分离偏转装置包括：
至少一组分离偏转线圈组件，设置于加速装置出口一侧，用于使从加速装置中射出的电子中一部分电子的运动方向发生偏转；
至少一组偏转线圈组件，设置于被分离偏转线圈组件偏转运行轨迹的电子的运行路径上，使这些电子的运行轨迹再次发生偏转。
进一步的，所述同源双能加速器还设有高能靶和低能靶两个靶，所述高能靶设置于未改变运动轨迹的电子的运行路径上，所述低能靶设置于被改变运行轨迹的电子的运行路径上。
进一步的，所述同源双能加速器还设有切换控制装置，所述切换控制装置包括：低能切换装置和高能切换装置；或者只配置高能切换装置；
低能切换装置，用于控制低能是否有输出；
高能切换装置，用于控制高能是否有输出。
进一步的，所述高能切换装置为一高能快门系统，所述高能快门系统可以阻断所述电子发射装置发射的电子束穿过或开启通孔让电子束穿过。
进一步的，所述低能切换装置为一低能快门系统，所述低能快门系统可以阻断经分离偏转装置分离出来的低能电子束穿过或开启通孔让低能电子束穿过。
进一步的，所述低能切换装置为一电子开关，该电子开关与所述分离偏转装置连接，通过控制分离编制装置的磁场强弱或电源通断，来控制低能电子束是否有输出。
进一步的，经所述偏转线圈组件偏转的电子运行轨迹和未被偏离原运行轨迹的电子的运行轨迹之间的距离不大于2cm。
本发明还提供一种加速器治疗装置，所述加速器治疗装置包括治疗控制装置、主机架、以及前述同源双能加速器。
附图说明
图1到图2是本发明的示意图。
图中数字和字母所表示的相应部件名称：
1.主机架；2.双能加速器；3.治疗床；21.电子发射装置；22加速器；23.分离偏转装置；231.分离偏转线圈组件；232.偏转线圈 组件；24.高能级电子束；25低能级电子束
具体实施方式
下面结合附图和具体实施方式对本发明作进一步详细的说明。
本发明的一种实施例，如图1及图2所示，为达到上述目的，本发明的技术方案是：
一种同源双能加速器2，包括：电子发射装置21和加速装置22，所述电子发射装置21位于加速装置22的输入端，其产生的电子经加速装置22加速后从加速装置22的输出端射出，所述同源双能加速器2还包括至少一个分离偏转装置23，设置于加速装置22的输出端一侧，用于使经过加速装置22加速后的电子中的部分电子运动轨迹发生改变。
本发明的优点是，发明人发现电子经加速装置加速后，所有电子的速度及能量并不完全相同，发明人利用这一发现，使用分离偏转装置23，设置于加速装置22的输出端一侧，将经过加速装置22加速后的粒子中的部分能量等级较低的电子(低能级电子束25)运动轨迹强制改变，将同源电子束中不同能级的电子进行分离，从而获得两种能级的电子束，其中高能级电子束24继续原有路径，用于放射治疗，而另一路低能级电子束25则用于跟踪病灶，和/或检测治疗效果。
在实际应用中，所述分离偏转装置23可以使用电磁偏转线圈来完成低能级电子束偏转的工作，它包括：
至少一组分离偏转线圈组件231，设置于加速装置22出口一侧，用于使从加速装置22中射出的电子中一部分电子的运动方向发生偏转；
至少一组偏转线圈组件232，设置于被分离偏转线圈组件231偏转运行轨迹的电子的运行路径上，使这些电子的运行轨迹再次发生偏转。
通常，所述同源双能加速器还设有高能靶和低能靶两个靶，所述高能靶设置于未改变运动轨迹的电子的运行路径上，所述低能靶设置 于被改变运行轨迹的电子的运行路径上。
为了进一步对电子束进行控制，所述同源双能加速器还设有切换控制装置，所述切换控制装置包括：低能切换装置和高能切换装置；或者只配置高能切换装置；
低能切换装置，用于控制低能是否有输出；
高能切换装置，用于控制高能是否有输出。
所谓输出的含义，对应用端来讲，就是是否有电子束到达目标物或者说病患的身体。
在一些实施例中，所述高能切换装置为一高能快门系统，所述高能快门系统可以阻断所述电子发射装置发射的电子束穿过或开启通孔让电子束穿过。
在一些实施例中，所述低能切换装置为一低能快门系统，所述低能快门系统可以阻断经分离偏转装置分离出来的低能电子束穿过或开启通孔让低能电子束穿过。
在另外一些实施例中，也可以，所述低能切换装置为一电子开关，该电子开关与所述分离偏转装置连接，通过控制分离编制装置的磁场强弱或电源通断，来控制低能电子束是否有输出。切断分离偏转装置的电源，使得其停止工作，或者降低其磁场强度，使得低能电子束无法改变轨迹，从而相当于停止了专门的低能级电子束的输出。这样可以方便的控制低能级电子束是否单独用于工作。
为了更加便于治疗以及验证，经所述偏转线圈组件偏转的电子运行轨迹和未被偏离原运行轨迹的电子的运行轨迹之间的距离不大于2cm。
本发明还提供一种加速器治疗装置，所述加速器治疗装置包括治疗控制装置、主机架、以及前述同源双能加速器。
以上所述的仅是本发明的优选实施方式，应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。

Claims (10)

  1. 一种同源双能加速器，包括：电子发射装置和加速装置，所述电子发射装置位于加速装置的输入端，其产生的电子经加速装置加速后从加速装置的输出端射出，其特征在于，所述同源双能加速器还包括至少一个分离偏转装置，设置于加速装置的输出端一侧，用于使经过加速装置加速后的电子中的部分电子运动轨迹发生改变。
  2. 根据权利要求1所述的同源双能加速器，其特征在于，所述分离偏转装置包括：
    至少一组分离偏转线圈组件，设置于加速装置出口一侧，用于使从加速装置中射出的电子中一部分电子的运动方向发生偏转；
    至少一组偏转线圈组件，设置于被分离偏转线圈组件偏转运行轨迹的电子的运行路径上，使这些电子的运行轨迹再次发生偏转。
  3. 根据权利要求2所述的同源双能加速器，其特征在于，经所述偏转线圈组件偏转的电子运行轨迹和未被偏离原运行轨迹的电子的运行轨迹平行。
  4. 根据权利要求1或2或3所述的同源双能加速器，其特征在于，所述同源双能加速器还设有高能靶和低能靶两个靶，所述高能靶设置于未改变运动轨迹的电子的运行路径上，所述低能靶设置于被改变运行轨迹的电子的运行路径上。
  5. 根据权利要求1或2或3所述的同源双能加速器，其特征在于，所述同源双能加速器还设有切换控制装置，所述切换控制装置包括：低能切换装置和高能切换装置；或者只配置高能切换装置；
    低能切换装置，用于控制低能是否有输出；
    高能切换装置，用于控制高能是否有输出。
  6. 根据权利要求5所述的同源双能加速器，其特征在于，所述高能切换装置为一高能快门系统，所述高能快门系统可以阻断所述电子发射装置发射的电子束穿过或开启通孔让电子束穿过。
  7. 根据权利要求5所述的同源双能加速器，其特征在于，所述低能切换装置为一低能快门系统，所述低能快门系统可以阻断经分离偏转装 置分离出来的低能电子束穿过或开启通孔让低能电子束穿过。
  8. 根据权利要求5所述的同源双能加速器，其特征在于，所述低能切换装置为一电子开关，该电子开关与所述分离偏转装置连接，通过控制分离编制装置的磁场强弱或电源通断，来控制低能电子束是否有输出。
  9. 根据权利要求3所述的同源双能加速器，其特征在于，经所述偏转线圈组件偏转的电子运行轨迹和未被偏离原运行轨迹的电子的运行轨迹之间的距离不大于2cm。
  10. 一种加速器治疗装置，所述加速器治疗装置包括治疗控制装置、主机架，其特征在于，还包括权利要求1到3任一的同源双能加速器。
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