CN109287059A - A kind of vertical ejector of low-energy electronic accelerator scanning beam and method - Google Patents
A kind of vertical ejector of low-energy electronic accelerator scanning beam and method Download PDFInfo
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- CN109287059A CN109287059A CN201810916241.9A CN201810916241A CN109287059A CN 109287059 A CN109287059 A CN 109287059A CN 201810916241 A CN201810916241 A CN 201810916241A CN 109287059 A CN109287059 A CN 109287059A
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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
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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
- H05H2007/046—Magnet systems, e.g. undulators, wigglers; Energisation thereof for beam deflection
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- Spectroscopy & Molecular Physics (AREA)
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Abstract
The present invention relates to a kind of vertical ejector of low-energy electronic accelerator scanning beam, which includes that titanium window and one group gather magnet.One end of the titanium window is equipped with sweeping magnet, and the other end is equipped with flange, be set with one group on the flange described in gather magnet；The grid window of covering titanium film is equipped with below the flange；The titanium film is equipped with pressing plate；The magnet of gathering includes that outside is enclosed with two c-type iron cores being oppositely arranged of stainless steel outer cover and the coil being sleeved on two c-type iron cores；The incoming line of external direct current power supply cable, the air inlet of external ventilation shaft are respectively equipped on the stainless steel outer cover；Two c-type iron cores being oppositely arranged are symmetrically arranged at the two sides of the titanium window；The coil is equipped with the binding post being connected with power cable.Meanwhile the invention also discloses the outbound courses of the device.The present invention is versatile, scheme is succinct, at low cost, high-efficient, is conducive to industrialization promotion.
Description
Technical field
The present invention relates to radiation processing technology fields more particularly to a kind of low-energy electronic accelerator scanning beam vertically to draw dress
It sets and method.
Background technique
RADIATION PROCESSING has been widely used in multiple fields, including industry, agricultural, environmental protection as a kind of civilian nuclear technology
Deng it is multiple to cover crosslinked polymer modification, curing of coatings, polyethylene foam, heat-shrinkage material, the activity improvement of semiconductor, wood-plastic
Condensation material preparation, the sterilization fresh of food, flue gas irradiate many process of desulphurization denitration, are a very widely used height
New technology achieves considerable economic benefit and good social benefit in developed country.
High, neutralization low energy irradiation accelerator, low energy accelerator energy can be divided into according to energy as irradiation accelerator
Generally less than 500 kV are mainly used for rubber for tire presulfurization, film irradiation, surface cure, medical article sterilizing etc..Often at present
The low energy accelerator lead-out mode seen substantially there are two types of, drawn after being scanned one is focused beam acts, another kind is that electron curtain draws
Mode out.The electron accelerator that scanning beam is drawn generally uses high voltage power supply and accelerating tube to concentrate the mode of placement, and structure is opposite
It is compact；Electron beam is emitted from gun cathode surface, is accelerated by accelerating tube, is then focused and is pierced by titanium film after scanning
Irradiation processing is carried out into atmosphere.Electrocurtain accelerator is generally high voltage power supply and accelerator body is discretely located, and uses monopole
Accelerating structure, electron beam are emitted from the wide cathode assembly of titanium window, are drawn out in atmosphere and are irradiated through titanium window in curtain shape
Processing, for the type accelerator without accelerating tube, body structure of accelerator is very succinct, but cathode assembly is bulky, manufacture craft
It is complicated.
And there is a problem to be in the spill process of low-energy electron beam it is noted that in order to reduce electron beam across titanium
The energy loss of film, the titanium film used get over Bao Yuehao, and the titanium film thickness that low-energy electronic accelerator uses at present is generally 8 ~ 20um,
The titanium film of such thickness can not large area bear atmospheric pressure, therefore grid window construction need to be made to support titanium film, while can also rise
To heat spreading function.Due to the presence of grid, both the above line draws scheme beam extraction efficiency and differs larger, and electron curtain is drawn
Mode is almost the outgoing of vertical gratings window titanium films, only drawing for line of the thickness blocks of grid tooth due to the electron beam of extraction
Out, and focused beam acts due to after being scanned draw when line and grid window it is angled, blocking of the height of grid tooth to line
Effect is most obvious, and the height dimension of grid tooth is much larger than its thickness, so the such ejection efficiency of scanning beam is by sharp fall.
Currently used scanning beam lead-out process is to be processed into grid tooth to be tilted a certain angle to solve the problems, such as ejection efficiency.
This scheme is the deflection angle calculated when electron beam is drawn first, and grid tooth position where then estimating again sets the deflection of place's line
Angle, in design grid, the tilt angle of each grid tooth is consistent with the beam bending angle of the point, draws in this way in line
It can guarantee grid tooth in the process to the lesser blocking rate of line, to improve ejection efficiency.But there is also certain defects for the program, first
If first extraction window height is when changing, due to the interval of usual grid tooth be it is constant, this will lead to beam bending to together
Angle when one grid tooth changes, and manufactured grid tooth angle degree be it is fixed, this will so that ejection efficiency reduce, if
The grid of differing tilt angles grid tooth is made due to different window height, this is unfavorable for the standardization of product.In addition line is in grid
The variation of lattice window upper angle be it is continuous, this makes all grid tilt angles, and none is identical, and adjacent gate
The angle change of between cog is smaller, therefore it is required that machining accuracy is very high, this makes, and the processing charges of grid window is high and qualification rate is lower.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of at low cost, high-efficient low-energy electronic accelerator scanning beams
Vertical ejector.
Another technical problem to be solved by this invention is to provide the low-energy electronic accelerator scanning beam vertically side of extraction
Method.
To solve the above problems, a kind of vertical ejector of low-energy electronic accelerator scanning beam of the present invention, special
Sign is: the device includes that titanium window and one group gather magnet；One end of the titanium window is equipped with sweeping magnet, and the other end is equipped with method
Orchid, be set with one group on the flange described in gather magnet；The grid window of covering titanium film is equipped with below the flange；The titanium film
It is equipped with pressing plate；The magnet of gathering includes the external two c-type iron cores and set being oppositely arranged for being enclosed with stainless steel outer cover
Coil on two c-type iron cores；The incoming line, external of external direct current power supply cable is respectively equipped on the stainless steel outer cover
The air inlet of ventilation shaft；Two c-type iron cores being oppositely arranged are symmetrically arranged at the two sides of the titanium window；It is set on the coil
There is the binding post being connected with power cable.
The flange is gathered magnet and is set in together by positioning screw with described.
The section many places of the c-type iron core are unequal.
The stainless steel outer cover is linked together with the c-type iron core by fixing screws.
The grid window is equipped with vertical grid tooth.
A kind of vertical outbound course of low-energy electronic accelerator scanning beam, comprising the following steps:
(1) the electron beam that cathode surface is emitted from low-energy electronic accelerator, vertically draws dress by low-energy electronic accelerator scanning beam
Sweeping magnet scanning in setting, reaches before drawing grid window, the electronics beam-emergence direction and lead direction, that is, vertical direction
Form angle；
(2) DC current is led to for the coil gathered on magnet in the vertical ejector of low-energy electronic accelerator scanning beam, at this time
Contrary magnetic field will be generated between the right and left magnetic pole of c-type iron core；
(3) the electron beam of angle is formed with lead direction during passing through the c-type core magnetic pole, magnetic field force induced work
Gathered with, the electron beam and consistent with lead direction.
Compared with the prior art, the present invention has the following advantages:
1, the section many places of c-type iron core are unequal in the present invention, thus magnetic field shape needed for forming deflection electronics.
2, air inlet of the stainless steel outer cover equipped with external ventilation shaft in the present invention makes to be formed in stainless steel cage clean empty
The normal pressure of gas, the external ozone for avoiding irradiation from generating enter and corrode the components such as iron core, coil.
3, the present invention is gathered mainly using structure simply vertical grid tooth by increasing by one group on titanium window
The method for holding together magnet makes to gather back the angle vertical with titanium film with the line of the inclined angle of titanium film after scanning.Gather magnetic simultaneously
The design in the multiple and different sections of iron, enable gather magnet generation magnetic field by it is all scanning post deflection different angles lines
It is all brought on the direction vertical with extraction window titanium film, to improve low-energy electron beam ejection efficiency.
4, the present invention is versatile, scheme is succinct, at low cost, is conducive to industrialization promotion.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is top view of the invention.
Fig. 3 is overall schematic of the invention.
Fig. 4 is the enlarged drawing of E in the present invention.
Fig. 5 is that the present invention gathers magnetic field of magnets distribution map.
In figure: 1-titanium window；2-coils；3-c-type iron cores；4-grid windows；5-stainless steel outer covers；6-flanges；7-into
Line mouth；8-air inlets 9-gather magnet；10-titanium films；11-pressing plates；12-vertical grid teeth；13-sweeping magnets；14-electricity
Beamlet.
Specific embodiment
As shown in Fig. 1 ~ 4, a kind of vertical ejector of low-energy electronic accelerator scanning beam, which includes titanium window 1 and one
Group gathers magnet 9.
One end of titanium window 1 is equipped with sweeping magnet 13, and the other end is equipped with flange 6, is set with one group on the flange 6 and gathers magnetic
Iron 9；The grid window 4 of covering titanium film 10 is equipped with below flange 6；Titanium film 10 is equipped with pressing plate 11；Gathering magnet 9 includes external packet
It is wrapped with two c-type iron cores 3 being oppositely arranged of stainless steel outer cover 5 and the coil 2 being sleeved on two c-type iron cores 3；Stainless steel
The incoming line 7 of external direct current power supply cable, the air inlet 8 of external ventilation shaft are respectively equipped on outer cover 5；Two are oppositely arranged
C-type iron core 3 is symmetrically arranged at the two sides of titanium window 1；Coil 2 is equipped with the binding post being connected with power cable.
Wherein:
Flange 6 is set in together with magnet 9 is gathered by positioning screw.
The section many places of c-type iron core 3 are unequal.
Stainless steel outer cover 5 is linked together with c-type iron core 3 by fixing screws.
Grid window 4 is equipped with vertical grid tooth 12.
A kind of vertical outbound course of low-energy electronic accelerator scanning beam, comprising the following steps:
(1) the electron beam 14 that cathode surface is emitted from low-energy electronic accelerator, is vertically drawn by low-energy electronic accelerator scanning beam
Sweeping magnet 13 in device scans, and reaches before drawing grid window 4,14 exit direction of electron beam and the i.e. vertical side of lead direction
To formation angle；
(2) DC current is led to for the coil 2 gathered on magnet 9 in the vertical ejector of low-energy electronic accelerator scanning beam, this
When will generate contrary magnetic field between the right and left magnetic pole of c-type iron core 3, and Distribution of Magnetic Field is as shown in Figure 5；
(3) the electron beam 14 of angle is formed with lead direction during passing through 3 magnetic pole of c-type iron core, magnetic field force induced effect, electricity
Beamlet 14 is gathered and consistent with lead direction.
Electron beam 14 remains vertical with Surface of Titanium Film direction during passing through titanium film, reduces in line spill process
Electrical losses, improve ejection efficiency.
Claims (6)
1. a kind of vertical ejector of low-energy electronic accelerator scanning beam, it is characterised in that: the device includes titanium window (1) and one group
Gather magnet (9)；One end of the titanium window (1) is equipped with sweeping magnet (13), and the other end is equipped with flange (6), on the flange (6)
Gather magnet (9) described in being set with one group；The grid window (4) of covering titanium film (10) is equipped with below the flange (6)；The titanium
Film (10) is equipped with pressing plate (11)；The magnet (9) of gathering includes that outside is enclosed with two of stainless steel outer cover (5) and is oppositely arranged
C-type iron core (3) and the coil (2) that is sleeved on two c-type iron cores (3)；It is respectively equipped on the stainless steel outer cover (5) outer
Connect the incoming line (7) of DC power supply cable, the air inlet (8) of external ventilation shaft；Two c-type iron cores being oppositely arranged
(3) two sides of the titanium window (1) are symmetrically arranged at；The coil (2) is equipped with the binding post being connected with power cable.
2. the vertical ejector of a kind of low-energy electronic accelerator scanning beam as described in claim 1, it is characterised in that: the method
Blue (6) are gathered magnet (9) and are set in together by positioning screw with described.
3. the vertical ejector of a kind of low-energy electronic accelerator scanning beam as described in claim 1, it is characterised in that: the C
The section many places of shaped iron core (3) are unequal.
4. a kind of vertical ejector of as described in claim 1 low-energy electronic accelerator scanning beam, it is characterised in that: it is described not
Rust steel outer cover (5) is linked together with the c-type iron core (3) by fixing screws.
5. the vertical ejector of a kind of low-energy electronic accelerator scanning beam as described in claim 1, it is characterised in that: the lattice
Grid window (4) is equipped with vertical grid tooth (12).
6. a kind of vertical outbound course of low-energy electronic accelerator scanning beam, comprising the following steps:
(1) the electron beam (14) that cathode surface is emitted from low-energy electronic accelerator, is vertically drawn by low-energy electronic accelerator scanning beam
The sweeping magnet in device (13) scans out, reaches before drawing grid window (4), electron beam (14) exit direction and extraction
Direction, that is, vertical direction forms angle；
(2) direct current is led to for the coil (2) gathered on magnet (9) in the vertical ejector of low-energy electronic accelerator scanning beam
Stream, will generate contrary magnetic field between the right and left magnetic pole of c-type iron core (3) at this time；
(3) the electron beam (14) of angle is formed with lead direction during passing through c-type iron core (3) magnetic pole, by magnetic
Field force effect, the electron beam (14) are gathered and consistent with lead direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810916241.9A CN109287059B (en) | 2018-08-13 | 2018-08-13 | Device and method for vertically leading out scanning beam of low-energy electron accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810916241.9A CN109287059B (en) | 2018-08-13 | 2018-08-13 | Device and method for vertically leading out scanning beam of low-energy electron accelerator |
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| Publication Number | Publication Date |
|---|---|
| CN109287059A true CN109287059A (en) | 2019-01-29 |
| CN109287059B CN109287059B (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810916241.9A Active CN109287059B (en) | 2018-08-13 | 2018-08-13 | Device and method for vertically leading out scanning beam of low-energy electron accelerator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113692102A (en) * | 2020-05-19 | 2021-11-23 | 四川智研科技有限公司 | Structure and method for reducing noise of electron accelerator |
| CN113692101A (en) * | 2020-05-19 | 2021-11-23 | 四川智研科技有限公司 | Compact electron accelerator |
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| JP2002305100A (en) * | 2001-04-06 | 2002-10-18 | Hitachi Medical Corp | Microtron electron accelerator |
| CN200953681Y (en) * | 2006-07-17 | 2007-09-26 | 清华同方威视技术股份有限公司 | Irradiation devices capable of double sources leading-out |
| US20080067406A1 (en) * | 2006-07-17 | 2008-03-20 | Yaohong Liu | Irradiating device and method for controlling the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113692102A (en) * | 2020-05-19 | 2021-11-23 | 四川智研科技有限公司 | Structure and method for reducing noise of electron accelerator |
| CN113692101A (en) * | 2020-05-19 | 2021-11-23 | 四川智研科技有限公司 | Compact electron accelerator |
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| Publication number | Publication date |
|---|---|
| CN109287059B (en) | 2020-12-29 |
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Effective date of registration: 20211203 Address after: 730030 Room 305, building 3, No. 509, Nanchang Road, Chengguan District, Lanzhou City, Gansu Province Patentee after: Gansu particle beam radiation Engineering Technology Co.,Ltd. Address before: 730000 No. 509, Nanchang Road, Chengguan District, Gansu, Lanzhou Patentee before: INSTITUTE OF MODERN PHYSICS, CHINESE ACADEMY OF SCIENCES |
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Address after: 730030 Room 305, building 3, No. 509, Nanchang Road, Chengguan District, Lanzhou City, Gansu Province Patentee after: Lanzhou Kejin Yi'an Radiation Technology Co.,Ltd. Address before: 730030 Room 305, building 3, No. 509, Nanchang Road, Chengguan District, Lanzhou City, Gansu Province Patentee before: Gansu particle beam radiation Engineering Technology Co.,Ltd. |