WO2004109718A1 - Dispositif guide de courant dun faisceau de particules charge - Google Patents

Dispositif guide de courant dun faisceau de particules charge Download PDF

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Publication number
WO2004109718A1
WO2004109718A1 PCT/CN2004/000619 CN2004000619W WO2004109718A1 WO 2004109718 A1 WO2004109718 A1 WO 2004109718A1 CN 2004000619 W CN2004000619 W CN 2004000619W WO 2004109718 A1 WO2004109718 A1 WO 2004109718A1
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Prior art keywords
charged particle
guiding device
hose
particle beam
soft tube
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Ceased
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PCT/CN2004/000619
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English (en)
French (fr)
Inventor
Chuanxiang Tang
Zhichao Sun
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Tsinghua University
Nuctech Co Ltd
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Tsinghua University
Nuctech Co Ltd
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Publication of WO2004109718A1 publication Critical patent/WO2004109718A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/08—Deviation, concentration or focusing of the beam by electric or magnetic means
    • G21K1/093—Deviation, concentration or focusing of the beam by electric or magnetic means by magnetic means

Definitions

  • the invention relates to the fields of radiation processing, non-destructive testing and radiation therapy, and in particular to a beam guiding device for radiation emitted from a radiation source. Background technique
  • Electron accelerators can generate high-energy electron beams or target high-energy electron beams to generate X-rays.
  • Irradiation treatment technology and radiotherapy are treatments that use the ionizing ability of electron beams or X-rays and induced radiation effects to cause certain biological and physical effects to the irradiated items, thereby sterilizing and removing insects, changing the physical properties of items, or treating tumors technology.
  • Non-destructive testing is the use of the ability of X-rays to penetrate an object to detect its internal structure.
  • high-power electron accelerators used for irradiation processing are large in volume and weight. In the application process, it is difficult to randomly change the position.
  • an electromagnet scanning device In order to increase the irradiation area, an electromagnet scanning device is generally used to make the electron beam It expands into a line bundle and leads out through the lead-out window.
  • the irradiation area generated by the scanning device is also basically fixed, so it is required that the article to be illuminated must be placed strictly in accordance with the irradiation area.
  • relatively large machinery is required to change the position of the accelerator or the illuminated object.
  • the object of the present invention is to provide a beam guiding device for a charged particle beam, which can flexibly and arbitrarily change the position and direction of the charged particle beam extraction. No need to change the position of the accelerator during use Or the position and shape of the illuminated object, just move the beam exit window to the specified position, which makes the operation more convenient and reduces the detection cost.
  • a beam guiding device for a charged particle beam which is arranged between a charged particle accelerator and a target or a measured object, and is characterized in that it includes bendability and expansion
  • a beam hose and a coil winding provided on an outer wall of the beam hose and used to generate a magnetic field for guiding a beam.
  • the present invention adopts the above structure, it can be used to irradiate the measured object from different angles and positions when the position of the illuminated object is fixed or the position of the charged particle accelerator is relatively unchanged, making the operation convenient and flexible. . Because there is no need to change the position of the accelerator, the mechanical transmission is simple and lightweight.
  • FIG. 1 is a schematic structural diagram of the present invention
  • Fig. 2 is a sectional view taken along the line A-A in Fig. 1.
  • the beam guiding device of the present invention is disposed between the electron accelerator 1 and the measured object or target, and includes a flexible and retractable beam tube 9 and a circulating water-cooled tube disposed on the outer wall thereof.
  • the periphery of the coil winding 10 may be preferably provided with a layer of yoke 11 made of a metal material, so as to form an external circuit of the magnetic field lines, which is used to close the magnetic field lines to reduce the magnetic resistance, and at the same time, reduce the exposed magnetic field to the human body or other equipment. Impact.
  • any cross-section of the beam hose 9 is a circle with the same cross-sectional area, and two ends of the beam hose 9 are provided with an introduction window 4 and an exit window 12 to close the beam hose 9.
  • the lead-in window 4 of the beam hose 9 is connected to the acceleration tube 2 of the electron accelerator 1.
  • the exit window 12 of the beam hose 9 can be placed at the place to be measured.
  • Beam hose 9 The segment 5 is parallel to the beam exit direction of the electron beam 3 of the electron accelerator 1 and does not bend or expand; to ensure that the angle between the electron beam 3 and the axis 8 of the beam hose 9 is zero when it is introduced.
  • the outer wall of the initial section 5 of the beam hose 9 is provided with a vacuum pump 6 for evacuating the inside of the beam hose 9 and a coil power source and a water cooling system 7 for the coil winding 10, so that the entire beam guiding device can be Operation is more convenient.
  • a light mechanical transmission device can be used to transfer the lead-out window 12 of the beam hose 9 to the position of the object to be measured.
  • the vacuum pump 6 keeps a high degree of vacuum in the channel of the beam hose 9 at all times.
  • the beam hose 9 may be filled with a small amount of gas as understood by those skilled in the art, as long as a certain degree of vacuum can be maintained in the beam hose 9.
  • the coil windings 10 are all wound on the beam channel. After being energized, a magnetic field parallel to the axis 8 of the channel of the beam tube 9 can be generated. The magnitude of the magnetic field can ensure that the turning radius of the highest energy electrons generated by the accelerator is smaller than that of the beam channel. Minimum bending radius.
  • the water cooling system 7 performs water cooling for the coil windings 10. After the electron beam 3 enters the beam channel in the beam hose 9, it flies along the axis 8 of the beam hose 9 and reaches the beam exit window 12, similar to the transmission process of light in an optical fiber.
  • the invention can be applied to the irradiation treatment of large, irregularly shaped or objects with special requirements, or applied to non-destructive testing and radiation therapy. Equipped with a lightweight mechanical transfer device in use, the irradiation can be performed flexibly, quickly and accurately. It has the characteristics of simple structure and low detection cost.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Radiation-Therapy Devices (AREA)
  • Particle Accelerators (AREA)

Description

带电粒子束的束流引导装置 技术领域
本发明涉及辐照加工、 无损探伤及放射治疗领域， 特别是从 辐射源放出的射线的束流引导装置。 背景技术
电子加速器可以产生高能电子束或将高能电子束打靶产生 X 射线。 辐照处理技术和放射治疗是利用电子束或 X射线的电离能 力和轫致辐射效应， 使受照物品产生某些生物和物理效应， 从而 进行杀菌除虫、 改变物品物理特性或治疗肿瘤的处理技术。 无损 探伤是利用 X射线对物体的穿透能力， 探测物体的内部结构。 现 有技术中， 用于辐照处理的大功率的电子加速器体积和重量都很 大， 在应用过程中， 位置很难随意改变， 为增加辐照面积， 一般 使用电磁铁扫描装置， 使电子束扩展为一条线行束， 再由引出窗 引出。 但扫描装置产生的辐照区域也基本固定不变， 因此要求被 照物品必须严格按照辐照区域放置。 在无损探伤和放射治疗的应 用中， 需要用较为庞大的机械装置来改变加速器或被照物体的位 置。 这种传统的束流引出方式的缺点是： 在辐照处理的应用中， 对被照物品的形状大小要求比较严格， 无法满足体积较大、 外形 不规则物品的辐照要求； 在无损探伤和放射治疗， 需要的机械传 动装置较大、 运行不方便、 成本高。 发明内容
为克服上述现有技术中存在的问题， 本发明的发明目的是提 供一种带电粒子束的束流引导装置， 它可灵活、 任意改变带电粒 子束流引出位置和方向。 在使用过程中， 无需改变加速器的位置 或被照物体的位置及其形状， 只需将束流引出窗移动到指定位置 即可， 使操作更加方便并降低了检测成本。
为达到上述的发明目的， 本发明提供了以下的技术方案： 一 种带电粒子束的束流引导装置， 设置在带电粒子加速器和靶或被 测物体之间， 其特征在于： 包括可弯曲和伸缩的束流软管、 以及 设置在所述束流软管外壁并用于产生引导束流的磁场的线圈绕 组。
本发明由于采用了上述结构， 因此可以在被照物品位置固定 不变或带电粒子加速器位置相对不变的情况下， 利用本发明从不 同的角度和位置对被测物品进行照射， 使操作方便灵活。 因为不 需要改变加速器的位置， 使得机械传动装置简单轻便。 附图说明
图 1是本发明的结构示意图；
图 2是图 1的 A-A向剖视图。
下面结合附图及具体实施方式对本发明作进一步的说明。 具体实施方式
参看图 1和图 2， 本发明的束流引导装置设置于电子加速器 1 和被测物体或靶之间， 包括可弯曲和伸缩的束流软管 9及其外 壁上设置的可使用循环水冷的线圈绕组 10。 该线圏绕组 10 的外 围可优选地设有一层用金属材料制成的磁轭 11， 以便构成磁力线 的外回路， 用于封闭磁力线使磁阻降低， 同时还可减少外露磁场 对人体或其它设备的影响。 所述束流软管 9 的任意横截面为截面 积相同的圆形， 其两端设有引入窗 4和引出窗 12并使束流软管 9 封闭。 束流软管 9的引入窗 4与电子加速器 1的加速管 2相连。 束流软管 9的引出窗 12可放置在被测物品之处。 束流软管 9的初 段 5与电子加速器 1的电子束流 3的出束方向平行且不弯曲或伸 缩； 以保证电子束流 3在引入时与束流软管 9 的轴线 8 夹角为 零。 束流软管 9的初段 5外壁上设有使束流软管 9内成真空的真 空泵 6和用于线圏绕组 10的线圏电源及水冷系统 7， 由此可使整 个束流引导装置的操作更加方便。
使用本发明时， 可使用轻便的机械传动装置将束流软管 9的 引出窗 12传送到被测物品位置。 真空泵 6使束流软管 9的通道内 一直保持较高的真空度。 可替代地， 束流软管 9 内也可如本领域 技术人 所了解地充有少量气体， 只要能使束流软管 9 内保持一 定的真空度即可。 线圏绕組 10均勾缠绕在束流通道上， 通电之后 可产生平行于束流软管 9通道轴线 8的磁场， 该磁场的大小可保 证加速器所产生最高能量电子的转弯半径小于束流通道的最小弯 曲半径。 水冷系统 7为线圈绕组 10进行水冷却。 当电子束流 3进 入到束流软管 9内束流通道之后， 沿束流软管 9的轴线 8飞行， 一直到达束流引出窗 12， 类似光线在光纤中的传输过程。
本发明可应用于大型、 形状不规则或有特殊要求物体的辐照 处理， 或应用于无损探伤和放射治疗。 在使用中配以轻便的机械 传送装置， 就可灵活、 快速、 精确地完成照射动作。 具有结构简 单、 检测成本低的特点。
值得提出的是， 按照上述的实施方式， 所述的电子加速器若 改用其它高能电子发生器、 等带电粒子加速器組成类似的技术方 案， 也应属本发明的保护范围。

Claims

Figure imgf000006_0001
1. 一种带电粒子束的束流引导装置， 设置在带电粒子加速器和 靶或被测物品之间， 其特征在于： 包括可弯曲和伸缩的束流软管
(9) 、 以及设置在所迷束流软管外壁上并用于产生引导束流的磁 场的线圏绕组（10) 。
2. 按照权利要求 1所述的带电粒子束的束流引导装置， 其特征 在于： 所述束流软管在其两端分别设有与所述带电粒子加速器的 加速管相连的引入窗 （4) 、 以及用于所述靶或被测物品的引出窗
(12) 。
3. 按照权利要求 1所述的带电粒子束的束流引导装置， 其特征 在于： 还包括使所述束流软管内成真空的真空泵（6) 。
4， 按照权利要求 1所述的带电粒子束的束流引导装置， 其特征 在于： 所述线圈绕组 （10) 的外围设有磁轭 (11) , 以构成磁力 线的外回路。
5. 按照权利要求 1所述的带电粒子束的束流引导装置， 其特征 在于： 所述束流软管 （9) 的初段 （5) 外壁上设有使束流软管
(9) 内成真空的真空泵（6)和用于线圈绕组 （10) 的线圈电源 及水冷系统（7) 。
6. 按照权利要求 1所述的带电粒子束的束流引导装置， 其特征 在于： 所述束流软管 （9) 的初段（5) 与带电粒子加速器的出束 方向平行且不弯曲。
7. 按照权利要求 1所述的带电粒子束的束流引导装置， 其特征 在于： 所述束流软管 （9)的任意横截面积为截面积相同的圆形。
PCT/CN2004/000619 2003-06-10 2004-06-08 Dispositif guide de courant dun faisceau de particules charge Ceased WO2004109718A1 (fr)

Applications Claiming Priority (2)

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CN03137303.8 2003-06-10
CN 03137303 CN1282215C (zh) 2003-06-10 2003-06-10 一种电子束的束流引导装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2519511A (en) * 2013-09-27 2015-04-29 Zeiss Carl Microscopy Gmbh Particle optical system having a liner tube and/or compensating coils
CN110553146A (zh) * 2019-08-23 2019-12-10 无锡爱邦辐射技术有限公司 为电子加速器提供氮气的供气装置
CN113903489A (zh) * 2020-06-22 2022-01-07 四川智研科技有限公司 一种桶形容器内外表面电子束辐照处理装置
CN111721599B (zh) * 2020-06-23 2021-08-27 南京大学 一种原子级材料束流在真空中变温液体包覆收集方法与装置
CN114284124A (zh) * 2021-02-02 2022-04-05 湖州超群电子科技有限公司 一种电子束辐照增强装置及其使用方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0193038A2 (de) * 1985-02-25 1986-09-03 Siemens Aktiengesellschaft Magnetfeldeinrichtung für eine Teilchenbeschleuniger-Anlage
US4769623A (en) * 1987-01-28 1988-09-06 Siemens Aktiengesellschaft Magnetic device with curved superconducting coil windings
US4782303A (en) * 1987-04-06 1988-11-01 Linlor William I Current guiding system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0193038A2 (de) * 1985-02-25 1986-09-03 Siemens Aktiengesellschaft Magnetfeldeinrichtung für eine Teilchenbeschleuniger-Anlage
US4769623A (en) * 1987-01-28 1988-09-06 Siemens Aktiengesellschaft Magnetic device with curved superconducting coil windings
US4782303A (en) * 1987-04-06 1988-11-01 Linlor William I Current guiding system

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CN1568125A (zh) 2005-01-19

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