CN101110280B - Irradiation device and its control method - Google Patents
Irradiation device and its control method Download PDFInfo
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- CN101110280B CN101110280B CN 200710130623 CN200710130623A CN101110280B CN 101110280 B CN101110280 B CN 101110280B CN 200710130623 CN200710130623 CN 200710130623 CN 200710130623 A CN200710130623 A CN 200710130623A CN 101110280 B CN101110280 B CN 101110280B
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Abstract
The invention provides an irradiation device and its control method, which comprises an electron accelerator, a scanning case connected to the electron accelerator, a scanning magnet, a target and an electron beam emergence window positioned on the scanning case. The electronic beam emergence window is arranged at the left side or right side of the target. The beneficial effects of the invention are: the invention integrates the functions of the existing electron beam eduction type irradiation device and X-ray eduction irradiation device. When the scanning magnet works, the accelerator irradiation device educes the electron beam flow; when the scanning magnet does not work, the accelerator irradiation device educes X-ray. The invention can not only educe two irradiation sources comprising electron beam and X-ray, but also meet the requirements for processing the irradiation object with different volumes. Therefore, the invention can be adopted to enlarge the application scope nearly without increasing the cost, to improve the system safety performance and enhance the service life and utilization rate of the irradiation system.
Description
Technical field
The present invention relates to the irradiation devices and the control method thereof in a kind of radiation processing technology field.
Background technology
Painted and the environmental contaminants irradiation treatment of irradiation such as irradiation processing is that gamma-rays that the X ray that utilizes high-power electron beam, electron beam to practice shooting to produce or radioactive nuclide are emitted carries out that macromolecular material preparation, food storage are fresh-keeping, medical supplies radiosterilization, medicine radiation sterilization, the maintenance of commodity irradiation, crystal and pearl etc.It is high that irradiation processing industry is considered to a kind of economic benefit; Energy savings is saved manpower, non-harmful new process systems; Be widely used in every field such as agricultural, industry, health care, its role in national economy and people's lives is remarkable day by day.
General application accelerator produces the electron beam of certain energy; These accelerators comprise capable ripple or wave ekctrinl inear accelerator, high direct voltage accelerator; The latter comprises again: electrostatic accelerator, insulating core transformer type accelerator, electrocurtain accelerator, dynamitron etc.Electron beam extraction irradiation devices as shown in Figure 1; Comprise electron linear accelerator 1, be installed in sweeping magnet 3 and the scan box 4 of triangle on the electron linear accelerator 1 through flange 2; Be installed on the scan box 4 the electron beam exit window 10 that goes out to restraint the position over against electron linear accelerator; And be installed in the chilled(cooling) water return (CWR) 9 that scan box 4 bottoms are used for cool electronic bundle exit window 10, wherein chilled(cooling) water return (CWR) 9 is through cooling water inlet 8, coolant outlet 12 external cooling water systems; During work, the scan mode of sweeping magnet 3 is bilateral scanning, i.e. the positive and negative half period that respectively accounts for of sweep current.The irradiation devices of this kind structure carry out irradiation processing after directly electron beam 5 being drawn through scan box 4 devices such as grade usually; Utilize electron beam to carry out irradiation processing and have advantages such as power is big, efficient is high, security performance is good; But, can only be used for the little or thin article object of volume because the penetration depth of electron beam is less.For the impartible greatly again article object of volume, like the log desinsection, effect is bad.Simultaneously traditional electron beam exit window formula irradiation devices scan box is very high to the stability requirement of sweeping magnet; If sweeping magnet 3 breaks down at work; Even the moment that the time is very short; Electron beam 5 causes severe impairment can for electron beam exit window 10, even damages the total system that comprises electron linear accelerator 1 and scan box 4.
When carrying out irradiation treatment for the impartible greatly again article object of volume; Usually use X ray extraction irradiation devices; X ray extraction irradiation devices structure as shown in Figure 2; Comprise electron linear accelerator 1, be installed in drift section 13 on the electron linear accelerator 1, be installed in out the target 7 of intrafascicular heart position through flange 2; And be installed in the chilled(cooling) water return (CWR) 9 that drift section 13 bottoms are used for cooled target 7, wherein chilled(cooling) water return (CWR) 9 is through cooling water inlet 8, coolant outlet 12 external cooling water systems.Utilize the electron beam target practice generation X ray of electron linear accelerator 1 output to carry out irradiation processing.X ray has the big advantage of penetration depth, can carry out irradiation processing to the bulky items object, but because it is to be practiced shooting by electron beam to convert, its efficient of electron beam irradiation is lower relatively.
In existing accelerator irradiation device, or just electron beam is drawn and is carried out irradiation, or just electron beam is practiced shooting and produced X ray and carry out irradiation, and their irradiation object has certain limitation.
Summary of the invention
The technical matters that (one) will solve
The objective of the invention is deficiency, a kind of irradiation devices that can draw electron beam and two kinds of irradiation bombs of X ray simultaneously are provided to above-mentioned prior art.
(2) technical scheme
For realizing above-mentioned purpose; The invention provides a kind of irradiation devices; The sweeping magnet that it comprises electron accelerator, the scan box that is connected with said electron accelerator and is used to control the electron beam that is produced by said electron accelerator is characterized in that said scan box is provided with target and electron beam exit window; Thereby when said sweeping magnet is not worked; Electron beam is mapped on the said target and produces X ray and export, and when said sweeping magnet work, through the electron beam of scanning through said electron beam exit window output.
Preferably, said target is arranged on the dead ahead of the electron beam that electron accelerator produces.
Preferably, said electron beam exit window is positioned at the left side or the right side of target.
Preferably, it is inner that said target is arranged on the electron beam exit window, target structure in forming.
Preferably, said scan box also is provided with the cooling water channel that is used for cooled target and electron beam exit window.
Preferably, when the work of said sweeping magnet, be supplied to the sweep current of said sweeping magnet, make the direction deflection with respect to the electron beam that said electron accelerator produced through the scanning center of the electron beam of scanning through control.
The present invention also provides a kind of control method of irradiation devices; The sweeping magnet that said irradiation devices comprise electron accelerator, the scan box that is connected with said electron accelerator and are used to control the electron beam that is produced by said electron accelerator; And said scan box is provided with target and electron beam exit window; Said control method may further comprise the steps: a). when said sweeping magnet is not worked; The electron beam that said electron accelerator is produced is mapped on the said target and produces X ray, thus said irradiation devices output X ray; B). when said sweeping magnet is worked,, make and behind the electron beam deflecting of scanning, pass through said electron beam exit window through to said sweeping magnet supply deflection scanning electric current, thus said irradiation devices output scanning electron beam.
(3) beneficial effect
But the advantage and the good effect of the irradiation devices that double source of the present invention is drawn are: structure of the present invention comprises electron linear accelerator, scan box, target and electron beam exit window; The function of integrated existing electron beam extraction irradiation devices and X ray extraction irradiation devices is in one; When sweeping magnet was worked, irradiation devices were drawn electronic beam current; When sweeping magnet is not worked, then draw X ray.Be that device of the present invention can be drawn electron beam and two kinds of irradiation bombs of X ray, with the processing request of the irradiated material object that satisfies different volumes.But the irradiation devices that utilize double source of the present invention to draw can increase expanding application scope under the condition of cost hardly; If break down in drawing the mode of electron beam owing to sweeping magnet simultaneously; Be sweeping magnet when not working, then electron beam is practiced shooting along forward direction and is produced X ray, can not produce infringement to the electron beam exit window; The security performance of system is high, but helps improving the life-span and the utilization factor of the irradiation devices that the present invention's double source draws.
Description of drawings
Fig. 1 is the structural representation of existing electron beam extraction irradiation devices;
Fig. 2 is existing X ray extraction irradiation devices structural representation;
The structural representation of first kind of embodiment of the irradiation devices that but Fig. 3 is a double source according to the invention to be drawn;
The structural representation of second kind of embodiment of the irradiation devices that but Fig. 4 is a double source according to the invention to be drawn.
Embodiment
Below in conjunction with accompanying drawing, but the embodiment of the irradiation devices that further explain double source of the present invention is drawn, but be not used for limiting protection scope of the present invention.
But the irradiation devices that double source of the present invention is drawn; Comprise electron linear accelerator 1, be installed in the scan box 4 on the electron linear accelerator 1 through flange 2; On scan box 4, sweeping magnet 3 is installed with electron linear accelerator 1 link position place; On scan box 4, go out to restraint the position over against electron linear accelerator 1 and be provided with target 7, target 7 is processed by heavy metal materials such as tungsten or tungalloys, and the left side of target 7 or right side are provided with the electron beam exit window of being processed by the metal forming of for example titanium 10 on scan box 4.Scan box is triangular in shape shown in the figure, but the shape of scan box and unrestricted can be any suitable shape.But in the irradiation devices that double source of the present invention is drawn, the scan mode of sweeping magnet 3 is a simple scanning, and promptly sweep current all is just or all to be negative, and this sweep current can be obtained by former forward of bilateral scanning electric current stack or negative current.This simple scanning mode can be accomplished by prior art.Target 7 is positioned at the dead ahead of electronic beam current 5, and electron beam exit window 10 is positioned at the dead ahead of electronic beam current 6.Scan box 4 among the present invention is drawn scan box for double source, and have two simultaneously and draw window, when sweeping magnet 3 is not worked, the electronic beam current direction that electronic beam current 5 directions are come out along former accelerator, electronic beam current 5 target practices 7 produce X ray, draw X ray; During sweeping magnet 3 work, beam pulling primary electron line 5 directions and opening in the scanning of one of which side form electronic beam current 6 and are scanned into the line style line, draw electron beam through electron beam exit window 10.In scan box 4 bottoms the chilled(cooling) water return (CWR) 9 that is used for cooled target 7 and electron beam exit window 10 is installed, wherein chilled(cooling) water return (CWR) 9 is through cooling water inlet 8, coolant outlet 12 external cooling water systems.
Among this embodiment, target 7 is the interior target structure that is arranged on electron beam exit window 10 inside, when sweeping magnet 3 is not worked; Electronic beam current 5 target practices 7 that electron linear accelerator 1 produces produce X ray, draw behind the X ray process electron beam exit window, because the electron beam exit window is very thin; Be tens microns, the energy deposition of X ray on the electron beam exit window is very small, can ignore; X ray can not damage the electron beam exit window, and the electron beam exit window can not influence X ray yet; During sweeping magnet 3 work, the beam pulling primary electron beam flow path direction that electron linear accelerator 1 produces and opening in the scanning of one of which side, the electronic beam current 6 that forms skew is scanned into the line style line, draws electron beam through electron beam exit window 10.
More than be preferred forms of the present invention, according to content disclosed by the invention, some identical, replacement schemes that those of ordinary skill in the art can obviously expect all should fall into the scope that the present invention protects.
Claims (7)
1. irradiation devices; Comprise electron accelerator (1), the scan box (4) that is connected with said electron accelerator (1) and be used for the sweeping magnet (3) of control by the electron beam of said electron accelerator (1) generation; It is characterized in that; Said scan box (4) comprises target (7) and electron beam exit window (10), thereby at said sweeping magnet (3) when not working, electron beam is mapped to said target (7) and goes up and produce X ray and export; And when said sweeping magnet (3) is worked, export through said electron beam exit window (10) through the electron beam of said sweeping magnet (3) simple scanning.
2. irradiation devices according to claim 1 is characterized in that, said target (7) is arranged on the dead ahead of the electron beam (5) that electron accelerator (1) produced.
3. irradiation devices according to claim 2 is characterized in that, said electron beam exit window (10) is positioned at the left side or the right side of target (7).
4. irradiation devices according to claim 2 is characterized in that, said target (7) is arranged on electron beam exit window (10) inboard, target structure in forming.
5. according to each described irradiation devices among the claim 1-4, it is characterized in that said scan box (4) also is provided with the cooling water channel (9) that is used for cooled target (7) and electron beam exit window (10).
6. according to each described irradiation devices among the claim 1-4; It is characterized in that; When said sweeping magnet (3) is worked; Be supplied to the sweep current of said sweeping magnet (3) through control, make the direction deflection of the electron beam (5) that is produced with respect to said electron accelerator (1) through the center of the electron beam of scanning.
7. the control method of irradiation devices; Said irradiation devices comprise electron accelerator (1), the scan box (4) that is connected with said electron accelerator (1) and are used for the sweeping magnet (3) of control by the electron beam of said electron accelerator (1) generation; And said scan box (4) comprises target (7) and electron beam exit window (10), and said control method may further comprise the steps:
A). when not working, the electron beam that said electron accelerator (1) is produced is mapped to said target (7) and goes up the generation X ray at said sweeping magnet (3), thus said irradiation devices output X ray;
B). when said sweeping magnet (3) is worked; Through supplying the deflection scanning electric current to said sweeping magnet (3); Make and behind the electron beam deflecting of said sweeping magnet (3) simple scanning, pass through said electron beam exit window (10), thus said irradiation devices output scanning electron beam.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710130623 CN101110280B (en) | 2006-07-17 | 2007-07-11 | Irradiation device and its control method |
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| CN200610098857 | 2006-07-17 | ||
| CN200610098857.7 | 2006-07-17 | ||
| CN 200710130623 CN101110280B (en) | 2006-07-17 | 2007-07-11 | Irradiation device and its control method |
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| CN101110280A CN101110280A (en) | 2008-01-23 |
| CN101110280B true CN101110280B (en) | 2012-02-29 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510656A (en) * | 2009-05-22 | 2012-06-20 | 同方威视技术股份有限公司 | Scanning magnet device used in electron irradiation accelerator |
| US9504135B2 (en) * | 2010-07-28 | 2016-11-22 | General Electric Company | Apparatus and method for magnetic control of an electron beam |
| CN102724804A (en) * | 2011-06-20 | 2012-10-10 | 广东中能加速器科技有限公司 | Method and apparatus for deflection of electronic beam of intra-operative radiation therapy apparatus |
| CN103903940B (en) | 2012-12-27 | 2017-09-26 | 清华大学 | A kind of apparatus and method for producing distributed X-ray |
| CN105163477B (en) * | 2015-10-16 | 2018-08-31 | 无锡鑫宏业特塑线缆有限公司 | A kind of Electron Accelerator Scanning Box |
| CN108271467A (en) * | 2018-03-27 | 2018-07-13 | 中广核达胜加速器技术有限公司 | It is a kind of for vegetable seeds surface desinsection, sterilizing devices and methods therefor |
| CN109362169A (en) * | 2018-12-24 | 2019-02-19 | 中广核达胜加速器技术有限公司 | A kind of bearing conversion equipment of electron accelerator X-ray conversion target |
| CN111403073B (en) * | 2020-03-19 | 2023-01-03 | 哈尔滨工程大学 | Multipurpose terminal based on electron accelerator |
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| US3158745A (en) * | 1962-08-14 | 1964-11-24 | Gen Electric | X-ray tube with means to selectively deflect the electron beam to plural targets |
| CN1155152A (en) * | 1995-12-11 | 1997-07-23 | 株式会社日立制作所 | Charged particle bunch device and operation method thereof |
| US6628750B1 (en) * | 2000-11-09 | 2003-09-30 | Steris Inc. | System for electron and x-ray irradiation of product |
| CN2591710Y (en) * | 2002-12-31 | 2003-12-10 | 清华大学 | Scattering screen type electronic beam irradiation device |
| CN1512516A (en) * | 2002-12-31 | 2004-07-14 | 清华同方威视技术股份有限公司 | Built-in ionic pump type scanner |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3158745A (en) * | 1962-08-14 | 1964-11-24 | Gen Electric | X-ray tube with means to selectively deflect the electron beam to plural targets |
| CN1155152A (en) * | 1995-12-11 | 1997-07-23 | 株式会社日立制作所 | Charged particle bunch device and operation method thereof |
| US6628750B1 (en) * | 2000-11-09 | 2003-09-30 | Steris Inc. | System for electron and x-ray irradiation of product |
| CN2591710Y (en) * | 2002-12-31 | 2003-12-10 | 清华大学 | Scattering screen type electronic beam irradiation device |
| CN1512516A (en) * | 2002-12-31 | 2004-07-14 | 清华同方威视技术股份有限公司 | Built-in ionic pump type scanner |
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