CN106535457A - Back-bombardment-preventing electron linear accelerator - Google Patents
Back-bombardment-preventing electron linear accelerator Download PDFInfo
- Publication number
- CN106535457A CN106535457A CN201610960485.8A CN201610960485A CN106535457A CN 106535457 A CN106535457 A CN 106535457A CN 201610960485 A CN201610960485 A CN 201610960485A CN 106535457 A CN106535457 A CN 106535457A
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- China
- Prior art keywords
- deflection
- electron
- electron gun
- linear
- boxes
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Classifications
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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
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/04—Magnet systems, e.g. undulators, wigglers; Energisation thereof
-
- 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
- H05H7/22—Details of linear accelerators, e.g. drift tubes
-
- 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
-
- 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
- H05H7/04—Magnet systems, e.g. undulators, wigglers; Energisation thereof
- H05H2007/046—Magnet systems, e.g. undulators, wigglers; Energisation thereof for beam deflection
Abstract
The invention discloses a back-bombardment-preventing electron linear accelerator, which includes an electron gun, a 270-degree deflection box, a 270-degree deflection magnet and a linear accelerating tube. The central axis of the electron gun and the central axis of the linear accelerating tube are vertical to each other. The linear accelerating tube includes a plurality of coaxially arranged accelerating cavities, and a beam channel II is arranged at the central axis of the linear accelerating tube; the 270-degree deflection magnet is arranged on the outer side of the 270-degree deflection box, and is used for providing a deflection magnetic field with a 270-degree deflection angle to an electron beam located in the 270-degree deflection box; the 270-degree deflection box is arranged between the electron gun and the linear accelerating tube, the inside of the 270-degree deflection box is hollow, the inlet of the 270-degree deflection box is connected with the electron gun, and the output port of the 270-degree deflection box is connected with the inlet of the linear accelerating tube; and a beam channel I in the electron gun, the hollow cavity of the 270-degree deflection box and the beam channel II in the linear accelerating tube mutually communicate, and form a beam track of electron beam motion. The back-bombardment-preventing electron linear accelerator provided by the invention can protect normal work of the electron gun, and prevents damage caused by back bombardment electrons.
Description
Technical field
The present invention relates to a kind of accelerator, particularly a kind of to prevent returning Hong electron linear accelerator.
Background technology
Accelerator can be divided into proton precessional magnetometer, heavy ion avcceleration and electron accelerator by charged particle species；By acceleration
Device structure can be divided into synchrotron, cyclotron and linear accelerator etc.；High-pressure type accelerator can be divided into by acceleration principle
With RF pulse-to-pulse stamp accelerator.
Relative to other types of accelerator, electron linear accelerator has the advantages that simple structure and energy are high.With
The development of science and technology, the application of electron linear accelerator are more and more extensive, and such as industrial irradiation accelerator, industrial flaw detection accelerates
Device, medical accelerator, scientific research accelerator etc..
Electron linear accelerator is typically all to use HIGH-POWERED MICROWAVES to originate as energy to accelerate electronics, and microwave is a kind of
High-frequency alternating electromagnetic field, after first accelerating cavity that the electron beam of electron gun transmitting is entered in linear accelerating pipe, in acceleration
The electrons gain energy of phase place enters second accelerating cavity along direction of advance, and the electronics in decelerating phase equally obtains energy
Amount, but direction is return electron rifle negative electrode, is referred to as to return and bangs.As the energy obtained from microwave is larger, cause to return Hong electricity
The speed of son is far longer than the speed of electron gun transmitting, therefore easily causes cathode temperature to raise, and affects cathode life even thorough
Bottom is damaged.For grided electron gun, Hong the fragile aperture plate of electron pole is returned.As a rule, line is bigger, and microwave power is higher, returns
Hong electronics is more easily damaged electron gun.
The content of the invention
The technical problem to be solved in the present invention is, for above-mentioned the deficiencies in the prior art, and to provide that a kind of anti-to return Hong electronics straight
Line accelerator, this prevents returning the normal work that Hong electron linear accelerator can protect electron gun, it is to avoid is returned Hong electronics and is damaged.
For solving above-mentioned technical problem, the technical solution used in the present invention is：
A kind of anti-returning bangs electron linear accelerator, including electron gun, 270 ° of deflection boxes, 270 ° of deflection magnets and linear accelerating pipes；
Used in electron gun is provided with beam channel one, the central shaft of electron gun at the transmitting of electron beam, the central axis of electron gun
Line is mutually perpendicular to the central axis of linear accelerating pipe.
Linear accelerating pipe includes the accelerating cavity of several co-axial alignments, is provided with line at the central axis of linear accelerating pipe
Passage two；
270 ° of deflection magnets are arranged on the outside of 270 ° of deflection boxes, for providing deflection to the electron beam in 270 ° of deflection boxes
Angle is 270 ° of magnetic deflection field.
270 ° of deflection boxes are arranged between electron gun and linear accelerating pipe, and 270 ° of deflection box inner hollows are arranged, and 270 ° partially
The entrance for turning box is connected with electron gun, and the delivery outlet of 270 ° of deflection boxes is connected with the entrance of linear accelerating pipe；Beam in electron gun
Beam channel two in the middle cavity and linear accelerating pipe of one, 270 ° of deflection boxes of circulation road is interconnected, and forms electron beam fortune
Dynamic beam trace.
270 ° of deflection magnets are arc block structure, and the quantity of 270 ° of deflection magnets is two pieces, are symmetricly set on 270 ° partially
Turn the both sides of box.
270 ° of deflection magnets are to separate the structure that Magnet is combined by polylith, are set in the periphery of 270 ° of deflection boxes.
Energy of the linear accelerating pipe using microwave as electronics beam electrons is originated.
The electron gun is grided electron gun.
, using after said structure, electron gun is not coaxial with linear accelerating pipe, and the axis of electron gun is added with straight line for the present invention
The axis of fast pipe is mutually perpendicular to, it is to avoid return Hong destruction of the electronics to electron gun.Using 270 ° of deflection magnets so that energy is high
, due to passing by longer path in sectorial magnetic field region and deflection angle is bigger, the low electronics of energy only need to be under magnetic field for electronics
Shorter distance of passing by and deflection angle is less, as a result play achromatic effect.
The present invention compared with prior art, uses 270 ° of deflection magnets, rather than 90 °（Or it is less than 90 °）Deflection magnetic
Ferrum, can both protect electron gun not destroyed by Hong electronics is returned, can avoid the electron beam of different-energy again through 90 °（Or
Less than 90 °）The beam loss that deflection magnet is caused, simple structure, technology maturity are high, it is easy to operate, its beneficial effect implemented
Fruit is substantially.
Description of the drawings
Fig. 1 shows a kind of anti-structural representation for returning Hong electron linear accelerator of the present invention.
Fig. 2 shows magnetic deflection field schematic diagram in 270 ° of deflection magnets.
Wherein have：1 electron gun, 2 270 ° of deflection boxes, 3 linear accelerating pipes, 4 beam traces, 5 accelerating cavities,
6 270 ° of deflection magnets, 7 beam channels two, 8 No. 1 accelerating cavities；9 beam channels one.
Specific embodiment
The present invention is further detailed explanation with concrete better embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of anti-returning bangs electron linear accelerator, including 1,270 ° of electron gun, 2,270 ° of deflection box deflection magnetic
Ferrum 6 and linear accelerating pipe 3.
Used in electron gun is preferably grided electron gun in the transmitting of electron beam, electron gun.
Beam channel 1 is provided with the central axis of electron gun, in the central axis and linear accelerating pipe of electron gun
Heart axis is mutually perpendicular to.
Linear accelerating pipe includes the accelerating cavity 5 of several co-axial alignments, from terms of Fig. 1, accelerating cavity from the top down, positioned at most going up
Floor for No. 1 accelerating cavity 8.
Energy of the linear accelerating pipe preferably using microwave as electronics beam electrons is originated.
Beam channel 27 is provided with the central axis of linear accelerating pipe.
270 ° of deflection magnets are arranged on the outside of 270 ° of deflection boxes, for providing to the electron beam in 270 ° of deflection boxes
Deflection angle is 270 ° of magnetic deflection field.
270 ° of deflection magnets preferably have the following two kinds preferred embodiment.
Embodiment 1
As shown in Fig. 2 270 ° of deflection magnets are arc block structure, the quantity of 270 ° of deflection magnets is two pieces, is symmetricly set on
The both sides of 270 ° of deflection boxes.Arrow in Fig. 2 represents magnetic direction
Embodiment 2
270 ° of deflection magnets are to separate the structure that Magnet is combined by polylith, are set in the periphery of 270 ° of deflection boxes.
270 ° of deflection boxes are arranged between electron gun and linear accelerating pipe, and 270 ° of deflection box inner hollows are arranged, and 270 ° partially
The entrance for turning box is connected with electron gun, and the delivery outlet of 270 ° of deflection boxes is connected with the entrance of linear accelerating pipe；Beam in electron gun
Beam channel two in the middle cavity and linear accelerating pipe of one, 270 ° of deflection boxes of circulation road is interconnected, and forms electron beam fortune
Dynamic beam trace 4.
This anti-returning bangs electron linear accelerator, and the electron beam launched by electron gun 1 during work is entered along beam trace 4
270 ° of deflection boxes 2, under the action of a magnetic field of 270 ° of deflection magnets 6, there is 270 ° of deflections, namely electronics in the direction of motion of electron beam
Beam leaves the direction of 270 ° of deflection boxes and the direction of entrance into 270 °, enters linear accelerating pipe 3 finally along beam trace 4.
Electron beam initially enters No. 1 accelerating cavity 8 of linear accelerating pipe 3, the electricity in No. 1 accelerating cavity 8 in accelerating phase
Son is accelerated, continues to accelerate along direction of advance into second accelerating cavity, the electronics in No. 1 accelerating cavity in decelerating phase
It is accelerated along contrary direction, return in 270 ° of deflection boxes 2, finally get on the inwall of 270 ° of deflection boxes 2.
Further, above-mentioned electron gun axis are vertical with linear accelerating pipe axis, it is to avoid return Hong electronics and get on electron gun.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment
Detail, the present invention range of the technology design in, various equivalents can be carried out to technical scheme, this
A little equivalents belong to protection scope of the present invention.
Claims (5)
1. a kind of anti-returning bangs electron linear accelerator, it is characterised in that：Including electron gun, 270 ° of deflection boxes, 270 ° of deflection magnets
With linear accelerating pipe；
Used in electron gun is provided with beam channel one, the central shaft of electron gun at the transmitting of electron beam, the central axis of electron gun
Line is mutually perpendicular to the central axis of linear accelerating pipe；
Linear accelerating pipe includes the accelerating cavity of several co-axial alignments, is provided with beam channel at the central axis of linear accelerating pipe
Two；
270 ° of deflection magnets are arranged on the outside of 270 ° of deflection boxes, for providing deflection to the electron beam in 270 ° of deflection boxes
Angle is 270 ° of magnetic deflection field；
270 ° of deflection boxes are arranged between electron gun and linear accelerating pipe, and 270 ° of deflection box inner hollows are arranged, 270 ° of deflection boxes
Entrance be connected with electron gun, 270 ° deflection boxes delivery outlets be connected with the entrance of linear accelerating pipe；Line in electron gun leads to
Beam channel two in the middle cavity and linear accelerating pipe of one, the 270 ° of deflection boxes in road is interconnected, and forms beam motion
Beam trace.
2. anti-returning according to claim 1 bangs electron linear accelerator, it is characterised in that：270 ° of deflection magnets are arc block
Shape structure, the quantity of 270 ° of deflection magnets is two pieces, is symmetricly set on the both sides of 270 ° of deflection boxes.
3. anti-returning according to claim 1 bangs electron linear accelerator, it is characterised in that：270 ° of deflection magnets are by polylith
The structure that Magnet is combined is separated, the periphery of 270 ° of deflection boxes is set in.
4. anti-returning according to claim 1 bangs electron linear accelerator, it is characterised in that：The linear accelerating pipe is using micro-
Ripple is originated as the energy of electronics beam electrons.
5. anti-returning according to claim 1 bangs electron linear accelerator, it is characterised in that：The electron gun is gate-controlled electron
Rifle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610960485.8A CN106535457A (en) | 2016-10-28 | 2016-10-28 | Back-bombardment-preventing electron linear accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610960485.8A CN106535457A (en) | 2016-10-28 | 2016-10-28 | Back-bombardment-preventing electron linear accelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106535457A true CN106535457A (en) | 2017-03-22 |
Family
ID=58326102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610960485.8A Pending CN106535457A (en) | 2016-10-28 | 2016-10-28 | Back-bombardment-preventing electron linear accelerator |
Country Status (1)
| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108696981A (en) * | 2018-05-31 | 2018-10-23 | 北京鑫智能技术股份有限公司 | A kind of α magnet for irradiation accelerator |
| CN110838427A (en) * | 2019-11-20 | 2020-02-25 | 中国航空制造技术研究院 | Electronic gun device for fuse wire additive manufacturing |
| CN112243310A (en) * | 2019-07-16 | 2021-01-19 | 清华大学 | Multi-ray source accelerator and inspection method |
| GB2590457A (en) * | 2019-12-19 | 2021-06-30 | Elekta ltd | Radiotherapy device |
| CN113365408A (en) * | 2021-05-20 | 2021-09-07 | 中国原子能科学研究院 | Accelerating structure and multi-cavity accelerator |
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| JPH0519100A (en) * | 1991-07-12 | 1993-01-26 | Mitsubishi Electric Corp | Electron beam irradiation device |
| JP2001116899A (en) * | 1999-10-15 | 2001-04-27 | Mitsubishi Electric Corp | Radiation generator |
| EP1227315A2 (en) * | 2001-01-26 | 2002-07-31 | Hitachi, Ltd. | X-Ray detector and charged-particle trap |
| JP2011165544A (en) * | 2010-02-12 | 2011-08-25 | Kobe Steel Ltd | Electron accelerator, and x-ray generating apparatus having the same |
| CN102647849A (en) * | 2012-05-04 | 2012-08-22 | 哈尔滨工程大学 | Electron linear accelerator having dual purposes and dual-purpose method of electron linear accelerator |
| CN105636331A (en) * | 2014-10-27 | 2016-06-01 | 上海联影医疗科技有限公司 | Electronic linear accelerator |
| CN105874097A (en) * | 2014-12-10 | 2016-08-17 | 株式会社爱发科 | Electron beam evaporation source and vacuum deposition device |
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2016
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Patent Citations (7)
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| JPH0519100A (en) * | 1991-07-12 | 1993-01-26 | Mitsubishi Electric Corp | Electron beam irradiation device |
| JP2001116899A (en) * | 1999-10-15 | 2001-04-27 | Mitsubishi Electric Corp | Radiation generator |
| EP1227315A2 (en) * | 2001-01-26 | 2002-07-31 | Hitachi, Ltd. | X-Ray detector and charged-particle trap |
| JP2011165544A (en) * | 2010-02-12 | 2011-08-25 | Kobe Steel Ltd | Electron accelerator, and x-ray generating apparatus having the same |
| CN102647849A (en) * | 2012-05-04 | 2012-08-22 | 哈尔滨工程大学 | Electron linear accelerator having dual purposes and dual-purpose method of electron linear accelerator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108696981A (en) * | 2018-05-31 | 2018-10-23 | 北京鑫智能技术股份有限公司 | A kind of α magnet for irradiation accelerator |
| CN112243310A (en) * | 2019-07-16 | 2021-01-19 | 清华大学 | Multi-ray source accelerator and inspection method |
| CN110838427A (en) * | 2019-11-20 | 2020-02-25 | 中国航空制造技术研究院 | Electronic gun device for fuse wire additive manufacturing |
| CN110838427B (en) * | 2019-11-20 | 2022-04-29 | 中国航空制造技术研究院 | Electronic gun device for fuse wire additive manufacturing |
| GB2590457A (en) * | 2019-12-19 | 2021-06-30 | Elekta ltd | Radiotherapy device |
| GB2590457B (en) * | 2019-12-19 | 2023-10-11 | Elekta ltd | Radiotherapy device |
| CN113365408A (en) * | 2021-05-20 | 2021-09-07 | 中国原子能科学研究院 | Accelerating structure and multi-cavity accelerator |
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