WO2017036015A1 - 一种x射线转换靶 - Google Patents

一种x射线转换靶 Download PDF

Info

Publication number
WO2017036015A1
WO2017036015A1 PCT/CN2015/098702 CN2015098702W WO2017036015A1 WO 2017036015 A1 WO2017036015 A1 WO 2017036015A1 CN 2015098702 W CN2015098702 W CN 2015098702W WO 2017036015 A1 WO2017036015 A1 WO 2017036015A1
Authority
WO
WIPO (PCT)
Prior art keywords
conversion target
ray conversion
ray
panel
base
Prior art date
Application number
PCT/CN2015/098702
Other languages
English (en)
French (fr)
Inventor
朱焕铮
俞章华
Original Assignee
中广核达胜加速器技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中广核达胜加速器技术有限公司 filed Critical 中广核达胜加速器技术有限公司
Publication of WO2017036015A1 publication Critical patent/WO2017036015A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K5/00—Irradiation devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08—Anodes; Anti cathodes

Definitions

  • the invention relates to an X-ray conversion target, in particular to a conversion target for generating X-rays by high-energy electron beam bombardment, and belongs to the technical field of irradiation processing.
  • electron accelerator irradiation uses a high-energy electron irradiation product produced by an electron accelerator to modify the product.
  • cobalt-60 radioisotopes are currently used.
  • Cobalt-60 radioactive sources are widely used in almost all walks of life. They are commonly used in agriculture for radiation breeding, stimulation, and radiation control of pests and food. Irradiation preservation and preservation.
  • cobalt-60 as a source of radioisotope, has a half-life of 5.27 years, which means that the source is decaying regardless of whether it is produced or not. Therefore, the source must be recharged or sourced to maintain the original irradiation capacity every year.
  • the increase in price is very expensive, almost 30% of the annual output value. The worse the benefit, the higher the cost.
  • the cobalt-60 source is prevented from being irradiated in the irradiation chamber by means of source rods, blocks, etc., and the radio source is lowered to the water well by the elevator when not in use, and the safety depth is ensured to ensure the personal safety of the personnel entering the irradiation room.
  • the technical problem to be solved by the present invention is to provide an X-ray conversion target which is obtained by bombarding an X-ray conversion target by an electron beam by being mounted under an accelerator scanning window, thereby obtaining X-rays; since X-rays have high penetration, they are in electrons.
  • the electron irradiation of the accelerator cannot meet the penetration requirement, the X-ray irradiation product is obtained by bombarding the X-ray conversion target by the electron beam, and the existing cobalt-60 radiation source irradiation can be replaced.
  • the technical solution adopted by the present invention is:
  • An X-ray conversion target includes a panel and a base, and an intermediate portion of the panel and the base is provided with an opening along a longitudinal direction thereof, and a bombardment plate is fixedly disposed at an opening between the panel and the base.
  • an intermediate partition fixedly connected to the base is disposed under the bombardment plate, a cooling chamber is formed between the intermediate partition and the bombardment plate, and water pipe joints are disposed at both ends of the cooling chamber.
  • a sealing ring is further disposed between the bombardment plate and the intermediate partition.
  • the bombardment plate is made of pure tantalum.
  • the panel and the bottom plate are made of one of 304, 316, 316L or 321 stainless steel.
  • the panel and the bottom plate are fixedly connected by a plurality of bolts.
  • the intermediate partition and the bottom plate are integrally formed.
  • the intermediate partition is welded to the bottom plate.
  • the cooling water used for circulating cooling in the cooling chamber is low calcium content soft water or purified water.
  • the X-ray conversion target By using an X-ray conversion target mounted under the accelerator scanning window, the X-ray conversion target is bombarded by an electron beam to obtain X-rays; since the X-ray has high penetration, the electron irradiation of the electron accelerator cannot meet the penetration requirement. At the time, the X-ray irradiation product is obtained by bombarding the X-ray conversion target by electron beam; the advantage of the X-ray irradiation of the low-dose, high-density product is particularly prominent, especially in the fields of food irradiation, medical device irradiation and the like;
  • Figure 1 is a front elevational view of an X-ray conversion target of the present invention
  • Figure 2 is a cross-sectional view of an X-ray conversion target of the present invention.
  • an X-ray conversion target includes a panel 1 and a base 3, and an intermediate portion of the panel 1 and the base 3 is provided with an opening along a length thereof, and the panel 1 and the base 3 are provided.
  • a bombardment plate 2 is fixedly disposed between the openings, and in this embodiment, the panel 1 and the bottom plate 3 are fixedly connected by a plurality of bolts 7.
  • X-rays are obtained when the bombardment plate 2 of the X-ray conversion target is bombarded by an electron beam; since the X-ray has high penetration, the electron irradiation of the electron accelerator cannot be satisfied.
  • X-ray irradiation products are obtained by bombardment of X-ray conversion targets by electron beam; the advantages of X-ray irradiation of low-dose and high-density products are particularly prominent, especially in the fields of food irradiation and medical device irradiation. .
  • bremsstrahlung a kind of radiation generated by the high-energy charged particles in the sudden deceleration
  • the bombardment plate 2 is made of pure tantalum, and the panel 1 and the bottom plate 3 are made of one of high quality stainless steels such as 304, 316, 316L or 321 to improve the service life of the device.
  • the conversion rate of the generated X-ray is low, which is usually about 5-7%, and most of the energy of the high-energy electron beam is absorbed by the target to generate heat. If the heat cannot be dissipated in time, the target will burn out, which will reduce the life of the X-ray conversion target and affect the production shutdown, which will affect the production efficiency.
  • an intermediate partition 8 fixedly connected to the base 3 is disposed below the bombardment plate 2, and a cooling chamber 6 is formed between the intermediate partition 8 and the bombardment plate 2, and both ends of the cooling chamber 6 are disposed There is a water pipe joint 5, and the cooling chamber is circulated and cooled through the water pipe joint 5, thereby ensuring the service life of the X-ray conversion target.
  • the cooling chamber 6 is used
  • the cooling water cooled by circulation is low calcium content soft water or pure water.
  • a sealing ring 4 is further disposed between the bombardment plate 2 and the intermediate partition plate 8, and the intermediate partition plate 8 and the bottom plate 3 are integrally formed or welded on the bottom plate 3 to ensure The sealing of the cooling chamber 6,
  • the present invention provides an X-ray conversion target that is mounted under an accelerator scanning window and bombards an X-ray conversion target by an electron beam to obtain X-rays; since X-rays have high penetration, they are in electrons.
  • the electron irradiation of the accelerator cannot meet the penetration requirement, the X-ray irradiation product is obtained by bombarding the X-ray conversion target by the electron beam, and the existing cobalt-60 radiation source irradiation can be replaced.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Particle Accelerators (AREA)

Abstract

X射线转换靶，包括面板（1）和底座（3），所述面板和底座的中间部位沿其长度方向均设置有开孔，所述面板（1）和底座（3）之间的开孔处固定设置有轰击板（2）。通过安装在加速器扫描窗下，由电子束轰击X射线转换靶，从而获得X射线；由于X射线具有高穿透性，因此在电子加速器电子辐照无法满足穿透要求时，通过电子束轰击X射线转换靶获取X射线辐照产品，并且可替换现有钴-60放射源辐照。

Description

一种X射线转换靶
本申请要求于2015年08月31日提交中国专利局、申请号为201510545054.0、发明名称为“一种X射线转换靶”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及了一种X射线转换靶，具体涉及一种高能电子束轰击产生X射线的转换靶，属于辐照加工技术领域。
背景技术
传统技术上的电子加速器辐照采用的是电子加速器产生的高能电子照射产品对产品进行改性。
针对高密度辐照的产品，目前使用的是钴-60放射性同位素，钴-60放射源的应用非常广泛，几乎遍及各行各业，在农业上常用于辐射育种、刺激增产，辐射防治虫害和食品辐照保藏与保鲜等。但是钴-60作为放射性同位素源，其半衰期为5.27年，也就是说该辐射源不管是否在生产中都在衰变，因此每年必须对放射源进行充源或增源以维持原有的辐照能力，目前增加价格非常昂贵几乎为年产值的30％以上，效益越差其成本越高。
钴-60放射源以源棒、块等形态防止于辐照室内进行辐照，在不用时利用升降机将放射源降至水井下，并保证安全深度，以保证进入辐照室的人员人身安全，但是在国内发生多次由于升降机故障造成卡源事故，由于辐射源具有辐射性，人员无法直接维修，辐射源在辐照室内不断的放射射线，造成产品温度过高烧毁，相关辐照室内设施烧毁等严重事故。放射源在国内也出现过多次丢失事件，造成不小的影响。
发明内容
本发明所要解决的技术问题是提供一种X射线转换靶，通过安装在加速器扫描窗下，由电子束轰击X射线转换靶，从而获得X射线；由于X射线具有高穿透性，因此在电子加速器电子辐照无法满足穿透要求时，通过电子束轰击X射线转换靶获取X射线辐照产品，并且可替换现有钴-60放射源辐照。
为了解决上述技术问题，本发明所采用的技术方案是：
一种X射线转换靶，包括面板和底座，所述面板和底座的中间部位沿其长度方向均设置有开孔，所述面板和底座之间的开孔处固定设置有轰击板。
可选的，所述轰击板下方设置有与所述底座固定连接的中间隔板，所述中间隔板与所述轰击板之间形成冷却室，所述冷却室的两端均设置有水管接头。
可选的，所述轰击板与中间隔板之间还设置有密封圈。
可选的，所述轰击板为纯钽制成。
可选的，所述面板和底板的材质为304、316、316L或321不锈钢中的一种。
可选的，所述面板和底板通过多个螺栓固定连接。
可选的，所述中间隔板与所述底板为一体成型结构。
可选的，所述中间隔板焊接在所述底板上。
可选的，所述冷却室中用于循环冷却的冷却水为低钙含量软水或纯净水。
本发明的有益效果是：
1、通过采用X射线转换靶安装在加速器扫描窗下，由电子束轰击X射线转换靶，从而获得X射线；由于X射线具有高穿透性，因此在电子加速器电子辐照无法满足穿透要求时，通过电子束轰击X射线转换靶获取X射线辐照产品；X射线辐照低剂量、高密度产品时优势尤为突出，尤其是在食品辐照、医疗器械辐照等领域具有领先优势；
2、并且可替换现有钴-60放射源辐照，当电子加速器高能电子束轰击轰击板时，在轰击板内发生轫致辐射(高能带电粒子在突然减速时产生的一种辐射)而产生X射线，因此当电子加速器关机断电的情况下没有射线产生，对设备维修、人员安全有很好的保证。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地， 下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明一种X射线转换靶的主视图；
图2是本发明一种X射线转换靶的剖视图。
具体实施方式
下面将结合说明书附图，对本发明做进一步的说明。
如图1和图2所示，一种X射线转换靶，包括面板1和底座3，所述面板1和底座3的中间部位沿其长度方向均设置有开孔，所述面板1和底座3之间的开孔处固定设置有轰击板2，本实施例中，面板1和底板3通过多个螺栓7固定连接。
通过采用X射线转换靶安装在加速器扫描窗下，由电子束轰击X射线转换靶的轰击板2时，获得X射线；由于X射线具有高穿透性，因此在电子加速器电子辐照无法满足穿透要求时，通过电子束轰击X射线转换靶获取X射线辐照产品；X射线辐照低剂量、高密度产品时优势尤为突出，尤其是在食品辐照、医疗器械辐照等领域具有领先优势。
并且可替换现有钴-60放射源辐照，当电子加速器高能电子束轰击轰击板时，在轰击板内发生轫致辐射(高能带电粒子在突然减速时产生的一种辐射)而产生X射线，因此当电子加速器关机断电的情况下没有射线产生，对设备维修、人员安全有很好的保证。
本发明中，轰击板2为纯钽制成，面板1和底板3的材质为304、316、316L或321等优质不锈钢中的一种，提高了设备的使用寿命。
高能电子束轰击X射线转换靶时，产生的X射线的转换率较低，约为通常只有5-7％左右，高能电子束的大部分能量都被靶材吸收，产生热量。如果热量不能及时散发，则会导致靶材烧坏，会降低X射线转换靶的寿命并影响生产停机，影响生产效率。因此在轰击板2下方设置有与所述底座3固定连接的中间隔板8，所述中间隔板8与所述轰击板2之间形成冷却室6，所述冷却室6的两端均设置有水管接头5，通过水管接头5对冷却室进行循环冷却，保证了X射线转换靶的使用寿命。其中，所述冷却室6中用 于循环冷却的冷却水为低钙含量软水或纯净水。
本实施例中，所述轰击板2与中间隔板8之间还设置有密封圈4，所述中间隔板8与所述底板3为一体成型结构，或者焊接在所述底板3上，保证了冷却室6的密封性，
综上所述，本发明提供的一种X射线转换靶，通过安装在加速器扫描窗下，由电子束轰击X射线转换靶，从而获得X射线；由于X射线具有高穿透性，因此在电子加速器电子辐照无法满足穿透要求时，通过电子束轰击X射线转换靶获取X射线辐照产品，并且可替换现有钴-60放射源辐照。
以上显示和描述了本发明的基本原理、主要特征及优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界。

Claims (9)

  1. 一种X射线转换靶，包括面板(1)和底座(3)，其特征在于：所述面板(1)和底座(3)的中间部位沿其长度方向均设置有开孔，所述面板(1)和底座(3)之间的开孔处固定设置有轰击板(2)。
  2. 根据权利要求1所述的一种X射线转换靶，其特征在于：所述轰击板(2)下方设置有与所述底座(3)固定连接的中间隔板(8)，所述中间隔板(8)与所述轰击板(2)之间形成冷却室(6)，所述冷却室(6)的两端均设置有水管接头(5)。
  3. 根据权利要求2所述的一种X射线转换靶，其特征在于：所述轰击板(2)与中间隔板(8)之间还设置有密封圈(4)。
  4. 根据权利要求1所述的一种X射线转换靶，其特征在于：所述轰击板(2)为纯钽制成。
  5. 根据权利要求1所述的一种X射线转换靶，其特征在于：所述面板(1)和底板(3)的材质为304、316、316L或321不锈钢中的一种。
  6. 根据权利要求1所述的一种X射线转换靶，其特征在于：所述面板(1)和底板(3)通过多个螺栓(7)固定连接。
  7. 根据权利要求2所述的一种X射线转换靶，其特征在于：所述中间隔板(8)与所述底板(3)为一体成型结构。
  8. 根据权利要求2所述的一种X射线转换靶，其特征在于：所述中间隔板(8)焊接在所述底板(3)上。
  9. 根据权利要求2所述的一种X射线转换靶，其特征在于：所述冷却室(6)中用于循环冷却的冷却水为低钙含量软水或纯净水。
PCT/CN2015/098702 2015-08-31 2015-12-24 一种x射线转换靶 WO2017036015A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510545054.0A CN105070343A (zh) 2015-08-31 2015-08-31 一种x射线转换靶
CN201510545054.0 2015-08-31

Publications (1)

Publication Number Publication Date
WO2017036015A1 true WO2017036015A1 (zh) 2017-03-09

Family

ID=54499696

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/098702 WO2017036015A1 (zh) 2015-08-31 2015-12-24 一种x射线转换靶

Country Status (2)

Country Link
CN (1) CN105070343A (zh)
WO (1) WO2017036015A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105070343A (zh) * 2015-08-31 2015-11-18 中广核达胜加速器技术有限公司 一种x射线转换靶
CN105788695B (zh) * 2016-04-22 2018-04-17 中国原子能科学研究院 一种大功率电子辐照加速器x射线转换靶
CN111403073B (zh) * 2020-03-19 2023-01-03 哈尔滨工程大学 一种基于电子加速器的多用途终端

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0358237A1 (en) * 1988-09-09 1990-03-14 The Titan Corporation Apparatus for and methods of detecting common explosive materials
US6907106B1 (en) * 1998-08-24 2005-06-14 Varian Medical Systems, Inc. Method and apparatus for producing radioactive materials for medical treatment using x-rays produced by an electron accelerator
CN202651055U (zh) * 2011-11-28 2013-01-02 天津市技术物理研究所 一种x射线转换靶
CN103208318A (zh) * 2013-03-21 2013-07-17 无锡爱邦辐射技术有限公司 大功率辐照加速器x射线转换靶及转换装置
CN203689930U (zh) * 2014-01-20 2014-07-02 汇佳生物仪器（上海）有限公司 电子直线加速器二维扫描高能x线辐照系统
CN105070343A (zh) * 2015-08-31 2015-11-18 中广核达胜加速器技术有限公司 一种x射线转换靶
CN204926816U (zh) * 2015-08-31 2015-12-30 中广核达胜加速器技术有限公司 一种x射线转换靶

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070237296A1 (en) * 2004-09-13 2007-10-11 Wyatt Jeffrey D Decontamination using planar X-ray sources
WO2008078477A1 (ja) * 2006-12-22 2008-07-03 Stanley Electric Co., Ltd. Ｘ線発生装置
JP2008268105A (ja) * 2007-04-24 2008-11-06 Toshiba Corp Ｘ線ビーム源、ｘ線ビーム照射装置、ｘ線ビーム透過撮影装置、ｘ線ビームｃｔ装置、ｘ線元素マッピング検査装置及びｘ線ビーム形成方法
CN103578894B (zh) * 2013-10-28 2015-11-25 中国科学院上海应用物理研究所 X射线转换靶

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0358237A1 (en) * 1988-09-09 1990-03-14 The Titan Corporation Apparatus for and methods of detecting common explosive materials
US6907106B1 (en) * 1998-08-24 2005-06-14 Varian Medical Systems, Inc. Method and apparatus for producing radioactive materials for medical treatment using x-rays produced by an electron accelerator
CN202651055U (zh) * 2011-11-28 2013-01-02 天津市技术物理研究所 一种x射线转换靶
CN103208318A (zh) * 2013-03-21 2013-07-17 无锡爱邦辐射技术有限公司 大功率辐照加速器x射线转换靶及转换装置
CN203689930U (zh) * 2014-01-20 2014-07-02 汇佳生物仪器（上海）有限公司 电子直线加速器二维扫描高能x线辐照系统
CN105070343A (zh) * 2015-08-31 2015-11-18 中广核达胜加速器技术有限公司 一种x射线转换靶
CN204926816U (zh) * 2015-08-31 2015-12-30 中广核达胜加速器技术有限公司 一种x射线转换靶

Also Published As

Publication number Publication date
CN105070343A (zh) 2015-11-18

Similar Documents

Publication Publication Date Title
WO2017036015A1 (zh) 一种x射线转换靶
ES2215149T3 (es) Blanco para la produccion de rayos x.
CN103762007B (zh) 电子直线加速器二维扫描高能x线辐照系统
Tsechanski et al. Electron accelerator-based production of molybdenum-99: Bremsstrahlung and photoneutron generation from molybdenum vs. tungsten
US9324535B2 (en) Self contained irradiation system using flat panel X-ray sources
CN210489263U (zh) 一种低能散电子束辐照装置
PL2283508T3 (pl) Źródło promieniowania i sposób wytwarzania promieniowania rentgenowskiego
CN203689930U (zh) 电子直线加速器二维扫描高能x线辐照系统
CN204926816U (zh) 一种x射线转换靶
WO2023284780A1 (zh) 中子捕获治疗系统
GB432154A (en) Improvements in and relating to x-ray tubes
CN110400650A (zh) 转换靶装置及靶材料层结构
JP2005233793A (ja) 電子線照射器のｘ線遮蔽構造
He et al. The design study of an ultra-high power EB/X-ray conversion facility
Raghuvanshi et al. Design and Development of Front‐end components of Indus‐2 Bending Magnet Beamlines
JPS57158936A (en) X-ray tube
JP3203094U (ja) 放射線被曝防止装置
Hovhannisyan et al. Photonuclear production of 47Sc isotope
Omar et al. Analytical modeling of 30-300 kV x-ray spectra taking into account the intrinsic bremsstrahlung angular distribution
Senthilkumaran et al. Quadrupole focused LWFA electron beam driven bremsstrahlung gamma ray source
IN2014CN03505A (zh)
Humann et al. JACOW: Challenges and mitigation measures for synchrotron radiation on the FCC-ee arcs
Student Yu. A. Kurachenko, HA Onischuk 2, 3, Eu. S. Matusevich 3, VV Korobeynikov 4 High-Intensity Bremsstrahlung of Electron Accelerator in Photoneutron and Radioisotopes Production for Medicine
Hyun et al. Commissioning and First Results From a Channeling-Radiation Experiment at FAST
Ludewig et al. Integration of the beam scraper and primary collimator in the SNS ring

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15902820

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15902820

Country of ref document: EP

Kind code of ref document: A1