CN103957655A - Electronic helical accelerator - Google Patents
Electronic helical accelerator Download PDFInfo
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- CN103957655A CN103957655A CN201410202889.1A CN201410202889A CN103957655A CN 103957655 A CN103957655 A CN 103957655A CN 201410202889 A CN201410202889 A CN 201410202889A CN 103957655 A CN103957655 A CN 103957655A
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Abstract
The invention relates to an accelerator, aims at solving the problem that an existing electronic accelerator is low in average beam current power and cannot meet the using demand of the fields of material irradiation and the like, meanwhile gives consideration to using economical efficiency and provides an electronic helical accelerator. The electronic helical accelerator comprises a radio-frequency resonance cavity, a pair of ridge-shaped electrodes, a four-pole magnet, a deflection magnet, a beam current motion pore passage, a pore passage inlet, a pore passage outlet and a grid-control electronic gun, wherein the beam current motion pore passage comprises a beam current deflection pore passage and ridge-shaped electrode beam current pore passages, the four-pole magnet and the deflection magnet are arranged outside the beam current deflection pore passage, electronic beams led from the pore passage inlet is subjected to acceleration, focusing and deflection in the beam current motion pore passage and finally jet out of the pore passage outlet, and the whole acceleration process is finished. The electronic helical accelerator is high in radio-frequency utilization efficiency and good in using economical efficiency, effectively improves the average beam current power and can well meet the using demand of the fields of material irradiation and the like.
Description
Technical field
The present invention relates to a kind of accelerator, particularly a kind of electron helical accelerator.
Background technology
Electron accelerator is a kind of conventional accelerator, is widely used in the fields such as scientific research, medical treatment, nondestructive inspection and material irradiation.The kind of electron accelerator is a lot, comprises electrostatic high-pressure accelerator, electron linear accelerator, betatron etc.Wherein, for the rebatron main electron linear accelerator that adopts at present of material irradiation, as conventional S-band irradiation accelerator, the beam parameters of its main force's type is 10MeV/20kW.Be subject to the common restriction of radio frequency utilization ratio and radio frequency power source, the beam power of electron linear accelerator is difficult to break through 30kW.
But, the current demand requirement of electron accelerator beam power being improved constantly for meeting the fields such as material irradiation, need to develop rebatron more than 50kW, therefore be difficult to break through this predicament of 30kW in order to overcome beam power, this just requires, from acceleration principle and device structure equal angles, electron accelerator is made to improvement.
Radio frequency power source is the energy source of electron accelerator line, is also one of principal element restricting at present beam power.Generally speaking, the frequency of radio frequency power source is lower, more easily obtain higher mean current power, its reason is: along with the reduction of frequency, the parts (as: waveguide, ceramic window, resonant cavity) such as radio-frequency power generation, transmission of radio frequency power source and the size of accelerating cavity increase thereupon, easily solve the heat dissipation problem under high power; Simultaneously, due to the heat dissipation problem having solved under radio frequency power source and accelerating cavity high power, therefore whole system easily runs on continuous wave mode, under identical mean current power, with respect to burst operative mode, the beam burst stream of continuous wave mode is lower by force, thereby has reduced the impact of the unfavorable factors such as space charge effect.Therefore,, from improving the angle of electron accelerator mean current power, need to adopt lower radio frequency operation frequency range to obtain more powerful irradiation accelerator.Because the working frequency range of existing electron linear accelerator radio frequency power source is generally at 2～3GHz, therefore can consider reducing this working frequency range improves mean current power, becomes stubborn problem but how to realize.
Radio frequency utilization ratio is another principal element of restriction electron accelerator beam power, its reason is: even solved to a certain extent the low problem of electron accelerator mean current power by the mode that reduces radio frequency power source working frequency range, and along with the raising of mean current power, although radio frequency utilization ratio also can improve, but because degree is limited, therefore be also necessary further to improve its usage economy of radio frequency utilization ratio and electron accelerator, thereby be conducive to applying commercially.
Except electron linear accelerator, in prior art, also there is the electron accelerator of snakelike line movement locus.But this kind of electron accelerator need to carry out 180 degree deflections to electron beam, need to take very large space, cause the beam acceleration number of times in unit radio frequency cavity length to be difficult to improve, radio frequency utilization ratio is subject to appreciable impact.
As can be seen here, working frequency range that can be by reducing electron accelerator radio frequency power source to be to improve its mean current power, but must take into account its its usage economy.Have technically larger difficulty owing to taking into account the two, therefore how overcoming this difficulty becomes problem demanding prompt solution.
Summary of the invention
Low for solving existing electron accelerator mean current power, can not meet the problem of the field user demands such as material irradiation, take into account its usage economy simultaneously, the invention provides a kind of electron helical accelerator.
This electron helical accelerator comprises radio-frequency cavity, a pair of ridged electrode, quadrupole magnet, deflecting magnet, line motion duct, duct entrance, duct outlet, the working frequency range of its radio frequency power source is 50～200MHz, described radio-frequency cavity be shaped as cylindrical cavity;
This electron helical accelerator also comprises grided electron gun, and its grid voltage waveform is sinusoidal wave, and operating frequency is identical with the working frequency range of radio frequency power source;
Described line motion duct comprises beam bending duct and ridged electrode beam channel, beam bending duct is connected with ridged electrode beam channel through radio frequency resonant cavity shell, and the space structure in line motion duct is spring type three-dimensional spiral structure or 8 font three-dimensional spiral structures;
Outside, beam bending duct is provided with quadrupole magnet and deflecting magnet, and the lateral confinement that described quadrupole magnet can be realized electron beam focuses on, and described deflecting magnet can be realized the three-dimensional yaw motion of electron beam; Wherein, the deflecting magnet of every section of beam bending duct outer setting is no less than 4;
Under the acting in conjunction of a pair of ridged electrode, quadrupole magnet and deflecting magnet, the electron beam of being introduced by duct entrance through acceleration, focusing and deflection, finally, by duct outlet outgoing, completes whole accelerator in line motion duct.
The working frequency range of described radio frequency power source is preferably 100MHz.
The shape of described radio-frequency cavity is preferably cylindrical cavity, anistree cylindrical cavity or square cylindrical cavity.
Due to the effect of grided electron gun grid, electron beam is directly formed as micropulse pattern, does not need longitudinal pack and the cutting of bundle group, thereby has avoided the beam loss of the follow-up acceleration transmission being caused by it.In addition, it is mutually wide shorter that the electron beam of grid-control output is rolled into a ball, and in the accelerator after it, Shu Tuanneng is loose just less, and the beam loss causing by faling apart is just corresponding less.Accelerator operation is in continuous wave mode, and the average flow that can improve thus electron beam is strong.In addition, due to the working frequency range of radio frequency power source, therefore its resonant cavity volume is larger, and water-cooled and heat dissipation problem relatively easily solve.
Electron helical accelerator of the present invention has adopted the line motion duct of spring type three-dimensional spiral structure or 8 font three-dimensional spiral structures, electron beam is repeatedly accelerated along three-dimensional track in line motion duct, the direction of beam bending is substantially perpendicular to ridged electrode plane, its deflecting magnet takes up space and can greatly reduce, beam acceleration number of times in unit radio frequency cavity length can be very high, radio frequency utilization ratio high (being about 70～80%), its usage economy is good, effectively improve the mean current power of electron accelerator, can better meet the user demand in the fields such as material irradiation.
Brief description of the drawings
Fig. 1 the present invention adopts the electron helical accelerator structure schematic diagram in spring type three-dimensional spiral structure line motion duct.
Fig. 2 the present invention adopts the electron helical accelerator structure schematic diagram in 8 font three-dimensional spiral structure line motion ducts.
Reference numeral: 1. radio-frequency cavity, 2. ridged electrode, 3. quadrupole magnet, 4. deflecting magnet, 5. line motion duct, 6. duct entrance, 7. duct outlet.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
Embodiment 1
A kind of electron helical accelerator, as shown in Figure 1, this electron helical accelerator comprises radio-frequency cavity 1, a pair of ridged electrode 2, quadrupole magnet 3, deflecting magnet 4, line motion duct 5, duct entrance 6, duct outlet 7, the working frequency range of its radio frequency power source is 100MHz, described radio-frequency cavity 1 be shaped as cylindrical cavity;
This electron helical accelerator also comprises grided electron gun, and its grid voltage waveform is sinusoidal wave, and operating frequency is identical with the working frequency range of radio frequency power source;
Described line motion duct 5 comprises beam bending duct and ridged electrode beam channel, and beam bending duct is connected with ridged electrode beam channel through radio-frequency cavity 1 housing, and the space structure in line motion duct 5 is spring type three-dimensional spiral structure;
Outside, beam bending duct is provided with quadrupole magnet 3 and deflecting magnet 4, and the lateral confinement that described quadrupole magnet 3 can be realized electron beam focuses on, and described deflecting magnet 4 can be realized the three-dimensional yaw motion of electron beam; Wherein, 6 blocks of deflecting magnets of every section of beam bending duct outer setting;
Under the acting in conjunction of a pair of ridged electrode 2, quadrupole magnet 3 and deflecting magnet 4, the electron beam of being introduced by duct entrance 6, in line motion duct 5 interior process acceleration, focusing and deflection, finally exports 7 outgoing by duct, completes whole accelerator.
Embodiment 2
A kind of electron helical accelerator, as shown in Figure 2, this electron helical accelerator comprises radio-frequency cavity 1, a pair of ridged electrode 2, quadrupole magnet 3, deflecting magnet 4, line motion duct 5, duct entrance 6, duct outlet 7, the working frequency range of its radio frequency power source is 100MHz, described radio-frequency cavity 1 be shaped as cylindrical cavity;
This electron helical accelerator also comprises grided electron gun, and its grid voltage waveform is sinusoidal wave, and operating frequency is identical with the working frequency range of radio frequency power source;
Described line motion duct 5 comprises beam bending duct and ridged electrode beam channel, and beam bending duct is connected with ridged electrode beam channel through radio-frequency cavity 1 housing, and the space structure in line motion duct 5 is 8 font three-dimensional spiral structures;
Outside, beam bending duct is provided with quadrupole magnet 3 and deflecting magnet 4, and the lateral confinement that described quadrupole magnet 3 can be realized electron beam focuses on, and described deflecting magnet 4 can be realized the three-dimensional yaw motion of electron beam; Wherein, 6 blocks of deflecting magnets of every section of beam bending duct outer setting;
Under the acting in conjunction of a pair of ridged electrode 2, quadrupole magnet 3 and deflecting magnet 4, the electron beam of being introduced by duct entrance 6, in line motion duct 5 interior process acceleration, focusing and deflection, finally exports 7 outgoing by duct, completes whole accelerator.
The electron helical accelerator course of work of embodiment 1,2 is as follows:
Low-energy electron beam enters radio-frequency cavity 1 from duct entrance 6, arrive the accelerating gap between two ridged electrodes 2 by ridged electrode beam channel, radio frequency resonant field forms accelerating field at the accelerating gap of ridged electrode 2, the electron beam passing through is accelerated, then pass through ridged electrode beam channel from radio-frequency cavity 1 outgoing, complete accelerator one time.From the electron beam of radio-frequency cavity 1 outgoing along beam bending duct after the focusing of quadrupole magnet 3 and the deflection of deflecting magnet 4, arrive the opposite side entrance of radio-frequency cavity 1, complete deflection one time.The object of three-dimensional yaw motion, except electron beam is arrived the opposite side of radio-frequency cavity 1, also will make its dislocation move to another ridged electrode beam channel, to avoid conflict.
Identical with deflection with acceleration for the first time, electron beam, after the acceleration and deflection of n time, finally exports 7 outgoing from duct, complete whole accelerator.In adjacent twice acceleration and deflection, if the yawing moment of for the first time deflection of electron beam from radio-frequency cavity 1 outgoing is identical, will form spring type three-dimensional spiral structure; If contrary, can form 8 font three-dimensional spiral structures.
Claims (3)
1. an electron helical accelerator, it is characterized in that: this electron helical accelerator comprises radio-frequency cavity, a pair of ridged electrode, quadrupole magnet, deflecting magnet, line motion duct, duct entrance, duct outlet, the working frequency range of its radio frequency power source is 50～200MHz, described radio-frequency cavity be shaped as cylindrical cavity;
This electron helical accelerator also comprises grided electron gun, and its grid voltage waveform is sinusoidal wave, and operating frequency is identical with the working frequency range of radio frequency power source;
Described line motion duct comprises beam bending duct and ridged electrode beam channel, beam bending duct is connected with ridged electrode beam channel through radio frequency resonant cavity shell, and the space structure in line motion duct is spring type three-dimensional spiral structure or 8 font three-dimensional spiral structures;
Outside, beam bending duct is provided with quadrupole magnet and deflecting magnet, and the lateral confinement that described quadrupole magnet can be realized electron beam focuses on, and described deflecting magnet can be realized the three-dimensional yaw motion of electron beam; Wherein, the deflecting magnet of every section of beam bending duct outer setting is no less than 4;
Under the acting in conjunction of a pair of ridged electrode, quadrupole magnet and deflecting magnet, the electron beam of being introduced by duct entrance through acceleration, focusing and deflection, finally, by duct outlet outgoing, completes whole accelerator in line motion duct.
2. electron helical accelerator as claimed in claim 1, is characterized in that: the working frequency range of described radio frequency power source is 100MHz.
3. electron helical accelerator as claimed in claim 1, is characterized in that: described radio-frequency cavity be shaped as cylindrical cavity, anistree cylindrical cavity or square cylindrical cavity.
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| CN201410202889.1A CN103957655B (en) | 2014-05-14 | 2014-05-14 | Electron helical accelerator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109618484A (en) * | 2018-12-28 | 2019-04-12 | 中国原子能科学研究院 | A kind of box resonant cavity |
| CN109661096A (en) * | 2018-12-28 | 2019-04-19 | 中国原子能科学研究院 | A kind of reentry type centre particle booster |
| CN111212512A (en) * | 2020-03-06 | 2020-05-29 | 陕西利友百辉科技发展有限公司 | Accelerating device, irradiation system and high-energy electron manufacturing equipment and using method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0328224A1 (en) * | 1988-02-10 | 1989-08-16 | Ultra-Centrifuge Nederland N.V. | An electron accelerator of the microtron type |
| US6327339B1 (en) * | 1999-03-25 | 2001-12-04 | Kie Hyung Chung | Industrial x-ray/electron beam source using an electron accelerator |
| US20020008450A1 (en) * | 2000-03-09 | 2002-01-24 | Hirofumi Tanaka | Continuous wave electron-beam accelerator and continuous wave electron-beam accelerating method thereof |
| CN1395459A (en) * | 2001-07-05 | 2003-02-05 | 马钟仁 | Method for utilizing radio-frequency to accelerate electrons |
| CN101375153A (en) * | 2005-09-30 | 2009-02-25 | 哈泽德斯坎公司 | Multi-energy cargo inspection system based on an electron accelerator |
| CN201854496U (en) * | 2010-11-10 | 2011-06-01 | 北京大基康明医疗设备有限公司 | Step-type linear accelerator |
| CN202857121U (en) * | 2012-08-22 | 2013-04-03 | 安徽华夏微波电子股份有限公司 | Grid-control electronic gun applicable to linear accelerator |
| CN103026803A (en) * | 2010-04-26 | 2013-04-03 | 量子日本股份有限公司 | Charged particle accelerator and charged particle acceleration method |
| CN103702506A (en) * | 2012-09-27 | 2014-04-02 | 北京大基康明医疗设备有限公司 | Accelerator, radiotherapy system, pharmaceutical system and radiotherapy pharmaceutical system |
-
2014
- 2014-05-14 CN CN201410202889.1A patent/CN103957655B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0328224A1 (en) * | 1988-02-10 | 1989-08-16 | Ultra-Centrifuge Nederland N.V. | An electron accelerator of the microtron type |
| US6327339B1 (en) * | 1999-03-25 | 2001-12-04 | Kie Hyung Chung | Industrial x-ray/electron beam source using an electron accelerator |
| US20020008450A1 (en) * | 2000-03-09 | 2002-01-24 | Hirofumi Tanaka | Continuous wave electron-beam accelerator and continuous wave electron-beam accelerating method thereof |
| CN1395459A (en) * | 2001-07-05 | 2003-02-05 | 马钟仁 | Method for utilizing radio-frequency to accelerate electrons |
| CN101375153A (en) * | 2005-09-30 | 2009-02-25 | 哈泽德斯坎公司 | Multi-energy cargo inspection system based on an electron accelerator |
| CN103026803A (en) * | 2010-04-26 | 2013-04-03 | 量子日本股份有限公司 | Charged particle accelerator and charged particle acceleration method |
| CN201854496U (en) * | 2010-11-10 | 2011-06-01 | 北京大基康明医疗设备有限公司 | Step-type linear accelerator |
| CN202857121U (en) * | 2012-08-22 | 2013-04-03 | 安徽华夏微波电子股份有限公司 | Grid-control electronic gun applicable to linear accelerator |
| CN103702506A (en) * | 2012-09-27 | 2014-04-02 | 北京大基康明医疗设备有限公司 | Accelerator, radiotherapy system, pharmaceutical system and radiotherapy pharmaceutical system |
Non-Patent Citations (4)
| Title |
|---|
| 曹新民: "辐照用紧凑连续波电子加速器的物理设计", 《强激光与粒子束》, vol. 22, no. 9, 30 September 2010 (2010-09-30), pages 2151 - 2154 * |
| 韩广文: "栅控电子枪的设计", 《中国原子能科学研究院年报》, 31 December 2011 (2011-12-31), pages 207 * |
| 马雁云等: "10 MeV 大功率单腔电子辐照加速器谐振腔的设计", 《中国原子能科学研究院年报》, 31 December 2011 (2011-12-31), pages 160 - 161 * |
| 黄骏等: "10 MeV/20 kW 辐照加速器主体结构的设计", 《中国原子能科学研究院年报》, 31 December 2013 (2013-12-31), pages 128 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109618484A (en) * | 2018-12-28 | 2019-04-12 | 中国原子能科学研究院 | A kind of box resonant cavity |
| CN109661096A (en) * | 2018-12-28 | 2019-04-19 | 中国原子能科学研究院 | A kind of reentry type centre particle booster |
| CN111212512A (en) * | 2020-03-06 | 2020-05-29 | 陕西利友百辉科技发展有限公司 | Accelerating device, irradiation system and high-energy electron manufacturing equipment and using method thereof |
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| CN103957655B (en) | 2016-04-06 |
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