CN103762007A - Two-dimensional scanning high-energy X-ray irradiation system with electron linear accelerator - Google Patents
Two-dimensional scanning high-energy X-ray irradiation system with electron linear accelerator Download PDFInfo
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Abstract
The invention relates to an X-ray irradiation system with an electron linear accelerator as an electron beam source. The X-ray irradiation system is provided with a two-dimensional scanning deflection coil magnet ring, a super-large transmission type X-ray converter, and an extension irradiation protection room with a transverse repeated fold-back sample conveying mechanism, and can be used for carrying out automatic entering and exiting sample irradiation treatment continuously on articles which need ionizing radiation and irradiation sterilizing, insect-killing and disinfecting treatment such as Chinese patent medicine, food and flowers. The X-ray irradiation system has the advantages of being high in radiation conversion efficiency, radiation intensity and radiation penetration power, capable of irradiating automatic entering and exiting samples continuously, good in uniformity of irradiation dose and good in system radiation protection, and avoiding the environmental threat related to the radionuclide. The X-ray irradiation system can replace radioactive nucleus irradiation equipment widely adopted at present, get rid of dependence on a nuclear irradiation source from the irradiation industry and eliminate the potential threat of generating radioactive nuclear pollution to the environment.
Description
Technical field
The present invention relates generally to a kind of novel ionizing radiation irradiation specialized equipment, particularly relates to a kind of electron linear accelerator two-dimensional scan high-energy X-ray irradiation system, belongs to ionizing radiation irradiation apparatus technical field.
Background technology
Utilize strong penetrability and the irradiation dose biological effect to biosome of ionizing radiation, the mankind since last century along with peaceful utilization of atomic energy slogan is extensively applied to nuclear radiation technology such as chemical plastic modification, food fresh keeping, sterilisation of objects sterilizing pesticide, irradiated biological effect study, treatment of blood products (preventing transfusion reaction) etc. various applications, also obtain very great society economic benefit.Irradiation is with nuclear radiation source thereby be widely used, and especially in food fresh keeping, in sterilisation of objects sterilizing pesticide irradiation, the large-scale nuclear radiation station that the high activity Co60 of take is irradiation bomb has all obtained more generally using in each provinces and regions of China at present.Due to the uncontrollable characteristic of nuclear radiation, nuclear radiation source is being manufactured, transportation, store and finally scrap after all produce radiation around always.Natural decay due to radioactive nuclide, the required exposure time of nuclear radiation equipment must constantly extend in time from dispatching from the factory, reach nucleic during the half life period (if Co60 is 5.3 years) exposure time must increase by 1 times, the radioactive source that more renews of radioactive source before eventually can scrapping with long needs of used time.And the production of radioactive source, transportation, stores, and changes and the processing of useless radioactive source, all may cause nuclear radiation harm to personal security around.There is card source accident in nuclear radiation station, front Henan of several years, the social groups' event that unexpectedly causes numerous residents' large area to flee from, is exactly a fresh and alive case.So the public of environmental protection personage and vast care environmental protection requires by various legislations, from the beginning nuclear radiation source is produced to the strictly management and control of dangerous material that radioactive nucleus pollutes potential threat as having to environment.Along with the continuous reinforcement of Public environmental attitude, and the serious consequence of the nuclear matter leakage accident being occurred generation baneful influence, this management and control is also in continuous reinforcement.Since the eighties in last century, people start to substitute nuclear radiation for irradiation industry by the controlled ionizing radiation technology ionizing radiation that for example accelerator and Roentgen apparatus produce, wish finally thoroughly to break away from the dependence to nuclear radiation source, eliminate environment is produced to radioactive nucleus pollution potential threat.But the irradiation of comparative maturity is mostly still used in and directly utilizes electron beam to carry out the chemical plastic industry of irradiation with electron accelerator at present.Although high-power electron beam can form high irradiation dose on photographed object surface, but because electron range is limited, although can extend irradiation width by scanning technique, also can only do top layer continuous irradiation for the certain width limited thickness plastics chemical materials to advancing and process.For need to be to the suitable demand of the irradiation such as the food fresh keeping of the degree of depth and sterilisation of objects sterilization and disinsection in larger packing, accelerator electron beam irradiation cannot meet and directly use, and user must rely on the Co60 gamma radiation device with strong penetrating power.
Analyze theoretically, several million can be converted to energy number million to the high-energy X-ray photon radiation of tens of MeVs in bombardment during metallic target to tens of megavolt level high-power electron beams, its conversion efficiency is far away higher than the x-ray generation equipment of current hundred KV levels, and the average penetration power of the x-ray radiation photon of its generation is also far above the gamma-ray photon penetration capacity of Co60.But because the isotropy irradiation with radioactive nucleus gamma ray is different, also it is different that the x-ray producing with common tens of kilovolts of hundred kilovolt electrons has larger irradiation angle to distribute, after this high-energy X-ray photon produces, major part is nearly all towards the be close direction radiation of angle of the direction with incident electron flight, irradiation angle is less, can not be simply and effectively for larger packing sample irradiation.In addition because produced high-energy X-ray penetration capacity is extremely strong, the Radiation Protection of equipment is complicated far beyond electron linear accelerator, be limited to technical development restriction, current electron accelerator manufacturer also fails to make enough technology in the research and development of high-energy X-ray irradiation system and drops into, and the product that makes it possible to the high-energy X-ray irradiation system at alternative high activity Co60 nuclear radiation station also fails occur and arrive in user's hand so far.And due to environmental protection requirement, each state is all in import and the outlet of restriction nuclear radiation source apparatus, this present situation certainly will affect the popularization of irradiation technique application.
The present invention produces according to this technical background research.On the thinking basis of the special-purpose transmission-type direct water-cooling anode super large focus X-ray spool of novel radiation (number of patent application 201210302279.X), inventor brings up to 10-20 MeV beam energy, utilize current irradiation as high-power electron beam, to originate to irradiate heavy metal target with electron linear accelerator and produce high-energy X-ray radiation, greatly improve x-ray energy conversion efficiency and photon energy penetration capacity and formed irradiation dose intensity; The one-dimensional scanning that electron accelerator adopts is at present changed into the two-dimensional scan that similar TV vacuum kinescope adopts, thereby the electron beam irradiation that obtains overlarge area is wild, mix overlarge area transmission-type x-ray conversion target, effectively solve high energy bremsstrahlung shooting angle little, the problem that irradiation face is little.In order to make full use of the advantage that high-energy X-ray penetration power is strong, make full use of the high-energy X-ray irradiation energy penetrating after sample bag, the radiation protection chamber of having designed suitable irradiation direction supporting and stretching, solved radiation of equipment protection question, and in the indoor Zigzag type sample transport mechanism repeatedly that is equipped with of radiation protection, solve continuous irradiation state sample turnover and the inner irradiation dose homogeneity question of sample packaging automatically, final formation the present invention's " electron linear accelerator two-dimensional scan high energy X wire spoke system ", also can effectively substitute at present widely used and take the nuclear radiation station that Co60 is irradiation bomb.
Along with environmental protection consciousness constantly strengthens in the whole world, irradiation industry has proposed tight demand to greatly developing the research and development of irradiation specific high-energy x-ray equipment in the generally present situation of application aspect food Chinese patent drug and biological products irradiation, require finally thoroughly to break away from the dependence to nuclear radiation source, eliminate environment is produced to radioactive nucleus pollution potential threat.The present invention solves just irradiation industry and breaks away from effective new product that radionuclide source is relied on.
Summary of the invention
goal of the invention
The present invention proposes a kind of high-energy X-ray irradiation system and supporting radiation protection chamber robotization sample inlet/outlet mechanism structural design with electron linear accelerator based on irradiation of innovation, for large irradiation dose irradiation industry application, object is Co 60 or the Ce 137 radioactive nucleus irradiation devices that substitute present widespread use, to eliminate, environment is produced to radioactive nucleus pollution potential threat, increase substantially service efficiency and the processing power of existing nuclear radiation equipment, thereby finally thoroughly break away from each dependence of relevant irradiation industry to radioactive nucleus irradiation bomb.
technical scheme
The present invention is achieved through the following technical solutions:
Electron linear accelerator two-dimensional scan high-energy X-ray irradiation system, comprise electron accelerator and appended two-dimensional scan deflection coil magnet ring, transmission-type x-ray conversion target, extend radiation protection chamber, horizontal Zigzag type sample transport mechanism repeatedly, it is characterized in that: electron accelerator is in Horizontal type, vacuum pipe periphery before its electron beam exit wound of bullet titanium window is provided with two-dimensional scan deflection coil, electron beam exit wound of bullet titanium outside window on central shaft a distance be provided with the transmission-type x-ray conversion target long rectangle and that parallel with electron beam exit wound of bullet titanium window face that large area horizontal direction is major axis, between electron beam exit wound of bullet titanium window and transmission-type x-ray conversion target, by tubaeform assisted vacuum protective cover, be connected, from the position of transmission-type x-ray conversion target, the sub-central beam axis of para-electric extends as central shaft, and being provided with inner space section is that horizontal direction is the extension radiation protection chamber of the long rectangle of major axis, by sample inlet travelling belt, a plurality of sample relaying, turn back that travelling belt, a plurality of sample turn to that rotating disk, a plurality of transition pad and sample export travelling belt form laterally repeatedly Zigzag type sample transport mechanism be placed in and extend on the indoor bottom surface of radiation protection, by import travelling belt and outlet travelling belt, by opening, be connected extending guard chamber injection port on the sidewall of radiation protection chamber and guard chamber outlet and outside respectively.
Tubaeform assisted vacuum protective cover outer wall is by meeting the plumbous of radiation protection requirement adequate thickness and supporting cladding aluminium alloy and make, and connects and clads the space between electron beam exit wound of bullet titanium window and transmission-type x-ray conversion target.
Transmission-type x-ray conversion target target surface and electron beam central axis are perpendicular, target surface is centered close to electron beam exit wound of bullet titanium outside window on central shaft, distance between transmission-type x-ray conversion target and electron beam exit wound of bullet titanium window equals by irradiation sample external packing height electron beam scan area height on target, and scanning plane width is sample external packing width 8-10 times; Transmission-type x-ray conversion target is shaped as the long rectangle that horizontal direction is major axis, area is a bit larger tham position electron beam scanning area, the one side that faces electron impact is made by the high atomic number simple metal diaphragm that is slightly larger than incident electron range, the thickness that the back side is slightly larger than electronic secondary range by high-termal conductivity low atomic number metal material supports, and propping material is cooling or adopt directly air-cooled by circulating water flow.
The inner space section that extends radiation protection chamber is that horizontal direction is the long rectangle of major axis, the width of interior section and be greater than highly respectively transmission-type x-ray conversion target width and height, from the position of transmission-type x-ray conversion target, the sub-central beam axis of para-electric stretches and outwards stretches as central shaft, and the horizontal width of interior section is slightly widened gradually and highly substantially remained unchanged; Extend respectively facing the wall and meditating and built up by concrete of radiation protection chamber; Near transmission-type x-ray conversion target position, offer guard chamber injection port extending in the side walls of one of radiation protection chamber, on a plurality of sample relayings are turned back the identical faces sidewall of distance and position of width of travelling belt, also offer guard chamber outlet with it; The width of guard chamber injection port and guard chamber outlet is slightly larger than the width of travelling belt, and height is a little more than the height that transmits sample.
Extend radiation protection chamber while adopting electron beam central axis lower than semi-underground design below Earth surface plane, utilize natural rock or soil layer Substitute For Partial wall thickness.
Laterally Zigzag type sample transport mechanism turns to rotating disk, a plurality of transition pad and outlet travelling belt to form by turn back travelling belt, a plurality of sample of import travelling belt, a plurality of sample relaying repeatedly, is placed in that to extend radiation protection indoor, is distributed in whole bottom surface; Import travelling belt, sample relaying turn back travelling belt and outlet travelling belt parallel close-packed arrays mutually, each travelling belt direction of transfer is all vertical with electron beam central axis extension line; Each travelling belt width is identical, is slightly larger than and transmits sample external packing size, and travelling belt transmission plane is identical with extension bottom surface, radiation protection chamber height, and each travelling belt conveyer line speed is controlled and remained identical by synchronous motor; It is contrary that adjacent travelling belt transmits surperficial traffic direction; Each sample turns to rotating disk to be crisscross arranged respectively at the two ends of adjacent travelling belt, connect adjacent travelling belt, sample turns to rotating disk radius to be slightly larger than travelling belt width, turntable surface and travelling belt transmission plane are substantially in same level, and velocity of rotation is controlled and remained that the linear velocity of radius 1/2 position on turntable surface is slightly faster than each travelling belt conveyer line speed by synchronous motor; The length of transition pad and width equal travelling belt width, are placed in each travelling belt termination and turn to rotating disk phase joining place and hide half turntable surface, are fixed on a little more than turntable surface planimetric position.
Utilize current chemical industry irradiation to originate as high-power electron beam with 10-20 megavolt electron linear accelerator, irradiate heavy metal target and produce high-energy X-ray radiation, greatly improve x-ray energy conversion efficiency and photon energy penetration capacity and formed irradiation dose intensity.
The one-dimensional scanning that electron accelerator adopts is at present changed into the two-dimensional scan that similar TV vacuum kinescope adopts, by tubaeform excessive vacuum chamber, electron beam output titanium outside window enough large distance setting take the transmission-type x-ray conversion target that high atomic number simple metal is target surface material, thereby obtain the electron beam irradiation open country of overlarge area.The overlarge area transmission-type x-ray conversion target configuring just becomes the high-energy X-ray radiation source of overlarge area direction radiation forward under high-energy electron beam scanning irradiates, the bremstrahlen x-ray radiation angle that effectively solves high-power electron beam generation is little, the defect that irradiation field area is little.
In order to make full use of the advantage that high-energy X-ray penetration power is strong, make full use of the high-energy X-ray irradiation energy penetrating after the sample bag of top layer, the extension radiation protection chamber of having designed suitable irradiation direction supporting and stretching, and extending the indoor Zigzag type sample transport mechanism repeatedly that is equipped with laterally of radiation protection, the Radiation Protection of resolution system and need automatically to be passed in and out by irradiation sample the problem of radiation protection chamber under continuous irradiation duty, and each is by irradiation sample package interior irradiation dose homogeneity question.Make can be entered radiation protection chamber by Automatic continuous by irradiation sample, and the autobiography repeatedly in service of repeatedly turning back in guard chamber, making can be full of whole radiation chamber space by irradiation sample, the emittance of system is utilized.Final formation the present invention's " electron linear accelerator two-dimensional scan high energy X wire spoke system ".
advantage and effect
Owing to adopting structure and the working method of above-mentioned innovation, compare with common X-ray irradiator, particularly to compare with radioactive nucleus irradiation bomb kind of blood exposing machine, obvious advantage of the present invention and effect are:
(1), emission conversion efficiency is high: press x-ray radiation physics basic theories, the energy conversion efficiency that electron beam is converted to X ray by heavy metal target is roughly proportional to the accelerated energy of electronics and target atom ordinal number.So 20 MeV accelerators, the efficiency that is converted to x-ray energy on same target is higher 100 times than 200 Kilovoltage X-ray transmitters.Specifically, if the beam energy power of 10 kilowatts always produces x-ray energy work rate with 200 Kilovoltage X-ray equipment and is about 0.04 kilowatt, be placed on 20 MeV electron beams and at same target, can produce x-ray energy work rate and can reach and be about 4 kilowatts.Employing of the present invention will make X emission conversion efficiency increase substantially than existing x-irradiation machine (the most 160kV of employing tube voltage) level.
(2), ray greatly strengthens sample penetration power, available irradiation field volume increases: press radiation physics basic theories, x-ray photon or gamma ray photon depend on photon energy and material density composed atom ordinal number to the penetration capacity of material, when material density and composed atom ordinal number are when constant, photon increases with photon energy the penetration capacity of material.And x-ray radiation photon energy is directly determined by incident electron energy, the maximum photon energy of x-ray power spectrum continuous distribution equals incident electron energy substantially, the ceiling capacity that is the x-ray photon that produces in the present invention is the more than 100 times of ceiling capacity that common X-ray irradiation apparatus (160 kilovolts of grades) produces x-ray photon, also than Co60, the large 10-20 of Cs137 gamma-ray photon energy doubly, so ray greatly strengthens sample penetration power, the x-ray seeing through after previous sample also maintains suitable radiation intensity, available irradiation field extends volume ratio common X-ray irradiation devices or Co60 nuclear radiation source all wants large.
(3), total radiation intensity is large: the energy conversion efficiency that is converted to x-ray due to high-power electron beam is far away higher than common X-ray equipment, add, have different compared with large radiation angle with the radiation in common X-ray source, high-energy X-ray is mostly concentrated along electron impact direction smaller angle to previous irradiation, so the electric power of same input, is used in x-ray radiation total intensity that high-energy electron accelerator Transmission X line target obtains at sample place and will be far longer than common X-ray device and can produces total radiation intensity.Even if weaken to some extent owing to adopting scan mode to make unit area target send radiation intensity, also the x-ray radiation intensity producing than same power common X-ray irradiation devices (even adopting transmission anode technology) from the suffered irradiation intensity of target same distance sample is large more than 100 times, and the radiation dose rate producing under same electrical power greatly increases than existing x-irradiation equipment.
(4), break away from a series of environmental issues of bringing with radioactive nucleus material: compare with now widely used radioactive nucleus irradiation apparatus, of the present inventionly apply and it is substituted, to realize the complete controlled of ionizing radiation and thoroughly break away from the dependence to radioactive nucleus material, avoid regulating the traffic of nuclear radioactive source to store expiring changing and a series of thorny problems that can cause environmental activity nuclear pollution are processed etc. in useless source, also exempted the trouble that constantly extends exposure time with Radioactive Source Decay simultaneously.This realizes the environmental protection strategy of sustainable development for us and has far-reaching strategic importance.
(5), automated operation efficiency is high, can realize the sample automation mechanized operation of being back to back under Continuous irradiation: a set of so that two covers of the present invention's supporting employing in extension radiation protection chamber are Zigzag type sample transport mechanism repeatedly laterally, and resolution system under continuous irradiation duty, needs automatically to be passed in and out the problem of radiation protection chamber by irradiation sample and each is by irradiation sample package interior irradiation dose homogeneity question.May design-build be also the irradiation system that can simultaneously carry out the same radiation treatment of two kinds of irradiation dose samples of height, there is stronger irradiation function and the versatility of two kinds of irradiation grade sample turnover automation mechanized operations under Continuous irradiation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: 1, electron accelerator, 2, electron beam exit wound of bullet titanium window, 3, two-dimensional scan deflection coil magnet ring, 4, transmission-type x-ray conversion target, 5, tubaeform assisted vacuum protective cover, 6, extend radiation protection chamber, 7, sample inlet travelling belt, 8, sample export travelling belt, 9, the sample relaying travelling belt of turning back, 10, sample turns to rotating disk, 11, excessive pad, 12, guard chamber injection port, 13, guard chamber outlet.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further:
The invention belongs to the innovation of ionizing radiation irradiation apparatus; the high-energy and high-efficiency x-ray irradiation system that does not produce the pollution of environmental activity nuclear matter of developing with controlled special-purpose Irradiation Design substitutes the uncontrollable radioactive nucleus irradiation bomb equipment having environment generation radioactive nucleus pollution potential threat of its radiation extensively adopting at present, with to protect mankind living environment.
The present invention be take the technology path that nuclear radiation equipment that radioactive nucleus is irradiation bomb and the existing various deficiency of irradiation x-ray equipment that industrial x-ray source is irradiation bomb of take done and is changed for existing, for special efficient high intensity radiation x-irradiation equipment manufactures and designs, opens up a brand-new technology path.The product technology that makes full use of existing electron linear accelerator according to radiation physics principle has been done four aspect material alterationses to existing irradiation apparatus:
(1) adopt current chemical products irradiation to originate as high-power electron beam with 10-20 megavolt electron linear accelerator, the Transmission X line conversion target generation high-energy X-ray radiation of making by irradiating heavy metal target, the ceiling capacity that makes the x-ray photon of generation is the more than 100 times of ceiling capacity that common X-ray irradiation apparatus (160 kilovolts of grades) produces x-ray photon, also than Co60, the large 10-20 of Cs137 gamma-ray photon energy doubly, large 100 times than 200 Kilovoltage X-ray devices of the efficiency that beam energy is converted to x-ray energy, it is large more than 100 times that the x-ray radiation intensity of generation is also wanted.
(2) one-dimensional scanning current irradiation being adopted with electron accelerator changes the two-dimensional scan that similar TV vacuum kinescope adopts into, by tubaeform excessive vacuum chamber, electron beam output titanium outside window enough large distance setting take the transmission-type x-ray conversion target that high atomic number simple metal is target surface material, thereby the high-energy X-ray radiation source of the overlarge area direction radiation forward of the electron beam irradiation open country of acquisition overlarge area, the bremstrahlen x-ray radiation angle that effectively solves high-power electron beam generation is little, the defect that irradiation field area is little.
(3), in order to make full use of the advantage that high-energy X-ray penetration power is strong, make full use of the high-energy X-ray irradiation energy penetrating after the sample bag of top layer, having designed suitable irradiation direction supporting extends radiation protection chamber;
(4) the horizontal Zigzag type sample transport mechanism repeatedly of a set of or two covers of supporting employing in the radiation protection chamber of extending, make one or two kind of irradiation dose demand sample at one, connect one respectively and in servicely successively rotate and turn back, tight distribution is indoor in whole radiation protection.Resolution system needs automatically to be passed in and out radiation protection chamber and each by irradiation sample package interior irradiation dose homogeneity question by irradiation sample under continuous irradiation duty, improves running efficiency of system.
Embodiment:
Fig. 1 is the present invention's " electron linear accelerator two-dimensional scan high energy X wire spoke system " structural representation;
As seen from Figure 1: electron linear accelerator two-dimensional scan high-energy X-ray irradiation system comprises electron accelerator 1 and appended two-dimensional scan deflection coil magnet ring 3, transmission-type x-ray conversion target 4, extend radiation protection chamber 6, horizontal Zigzag type sample transport mechanism repeatedly, its architectural feature is: electron accelerator 1 main body is in Horizontal type, vacuum pipe periphery before its electron beam exit wound of bullet titanium window 2 is provided with two-dimensional scan deflection coil magnet ring 3, a distance on electron beam exit wound of bullet titanium window 2 outer central shafts, being provided with large area horizontal direction is the transmission-type x-ray conversion target 4 long rectangle and that parallel with electron beam exit wound of bullet titanium window 2 faces of major axis, between electron beam exit wound of bullet titanium window 2 and transmission-type x-ray conversion target 4, by tubaeform assisted vacuum protective cover 5, be connected, from the position of transmission-type x-ray conversion target 4, the sub-central beam axis of para-electric extends as central shaft, and being provided with inner space section is that horizontal direction is the extension radiation protection chamber 6 of the long rectangle of major axis, by sample inlet travelling belt 7, a plurality of sample relaying, turn back that travelling belt 9, a plurality of sample turn to that rotating disk 10, a plurality of transition pad 11 and sample export travelling belt 8 form laterally repeatedly Zigzag type sample transport mechanism be placed on the bottom surface in radiation protection chamber 6, by import travelling belt 7 and outlet travelling belt 8, by the guard chamber injection port 12 of opening on 6 sidewalls of radiation protection chamber, be connected with guard chamber outlet 13 and outside respectively.
Vacuum pipe periphery before the electron beam exit wound of bullet titanium window 2 of electron accelerator 1 is provided with two-dimensional scan deflection coil magnet ring 3, make accelerated after outgoing high-power electron beam in two dimensions of horizontal and vertical, make intermittent scanning, on 2 of electron beam exit wound of bullet titanium windows and arrive and all form the long rectangle irradiation open country that the horizontal direction of Uniform Irradiation intensity is major axis on outer transmission-type x-ray conversion target 4 target surfaces of certain distance.Tubaeform assisted vacuum protective cover 5 outer walls are made by the lead and the compound golden aluminium of support package that meet radiation protection adequate thickness, connect and clad the space between the outer transmission-type x-ray conversion target 4 of electron beam exit wound of bullet titanium window 2 and certain distance, keep the suitable vacuum tightness in this space to avoid the scattering ionizing collision of electronics and air, to reduce the loss of outgoing electron amount of energy, and stop the equipment that leaks out of the reflection direction x-ray radiation producing on transmission-type x-ray conversion target 4.
Transmission-type x-ray conversion target 4 target surfaces and electron beam central axis are perpendicular, target surface is centered close to certain distance position on electron beam exit wound of bullet titanium window 2 outer central shafts, this distance is less than accelerated electron free range in air under vacuum tightness in tubaeform assisted vacuum protective cover 5, long enough approximates and irradiation sample external packing height position electron beam scanning area height again, and scan area width is 8-10 times of irradiation sample external packing width, approach extension radiation protection chamber 6 inner section long-pending; Transmission-type x-ray conversion target 4 is shaped as the long rectangle that horizontal direction is major axis, area is a bit larger tham position electron beam scanning area, the one side that faces electron impact is made by the high atomic number simple metal diaphragm of suitable thickness (being slightly larger than incident electron range), the back side is supported by high-termal conductivity low atomic number metal material suitable thickness (being slightly larger than electronic secondary range), and propping material can manufacture and design for cooling by circulating water flow or adopt directly air-cooled.The target surface high atomic number simple metal layer of transmission-type x-ray conversion target 4 can stop the high-power electron beam of scanning incident completely, its portion of energy is converted to after high-energy X-ray radiation, can see through transmission-type x-ray conversion target 4 each layers continues with low-angle to previous irradiation, inject and extend in radiation protection chamber 6, realize indoor by the steady and continuous irradiation of irradiation sample.
The inner space section that extends radiation protection chamber 6 is that horizontal direction is the long rectangle of major axis, the width of interior section and be greater than highly respectively transmission-type x-ray conversion target 4 width and height, from the position of transmission-type x-ray conversion target 4, the sub-central beam axis of para-electric stretches and stretches out as central shaft, and the horizontal width of interior section is slightly widened gradually and highly substantially remained unchanged.The length that stretches out of extending radiation protection chamber 6 is selected according to the sample irradiation dose demand of accelerator accelerating potential grade and design.Extend respectively facing the wall and meditating of radiation protection chamber 6 and built up by adequate thickness concrete, if adopt electron beam central axis lower than the semi-underground design below Earth surface plane, also can utilize natural rock or soil layer Substitute For Partial wall thickness.In the side walls of 6 one of radiation protection chambers of extension, near transmission-type x-ray conversion target 4 positions, offer guard chamber injection port 12, on a plurality of sample relayings are turned back the identical faces sidewall of distance and position of width of travelling belt 9, also offer guard chamber outlet 13 with it.The width of guard chamber injection port 12 and guard chamber outlet 13 is slightly larger than the width of travelling belt, and height is a little more than the height that transmits sample.According to the demand of the different irradiation dose samples of while irradiation, can also be in to the lengthening situation of the chamber of radiation protection shown in Fig. 1 development length during design-build, on the sidewall of relevant position, arrange second group into and out of sample mouth, the independent sample transport mechanism of Zigzag type repeatedly of controlling transfer rate of corresponding configuration the second cover, move with a set of sample transport mechanism of Zigzag type repeatedly above simultaneously, irradiation when being used for the different sample of two grade irradiation doses of height, the service efficiency of raising system.
Laterally Zigzag type sample transport mechanism turns to 10,14 transition pads 11 of rotating disk and sample export travelling belt 8 to form by turn back travelling belt 9, seven samples of sample inlet travelling belt 7, six groups of sample relayings repeatedly, be placed in and extend in radiation protection chamber 6, be distributed in indoor whole bottom surface.Sample inlet travelling belt 7, sample relaying turn back travelling belt 9 and outlet travelling belt 8 parallel close-packed arrays mutually, each travelling belt direction of transfer is vertical with electron beam central axis stretching, extension line.Each travelling belt width is identical, is slightly larger than and transmits sample external packing size, and travelling belt transmission plane is identical with bottom surface, radiation protection chamber height, and each travelling belt conveyer line speed is controlled and remained identical by synchronous motor; It is contrary that adjacent travelling belt transmits surperficial traffic direction.Sample turns to rotating disk 10 to be crisscross arranged respectively at the two ends of adjacent travelling belt, connect adjacent travelling belt, sample turns to rotating disk 10 radiuses to be slightly larger than travelling belt width, turntable surface and travelling belt transmission plane are substantially in same level, and velocity of rotation is controlled and remained that the linear velocity of radius 1/2 position on turntable surface is slightly faster than each travelling belt conveyer line speed by synchronous motor.The length of transition pad 11 and width approximate travelling belt width, are placed in each travelling belt termination with rotating disk phase joining place and hide approximately half turntable surface, are fixed on a little more than turntable surface planimetric position.
Laterally the method for operation of Zigzag type sample transport mechanism is repeatedly: by one of irradiation sample, suffer a ground and sent into and extended radiation protection chamber 6 by guard chamber injection port 12 by import travelling belt 7, through transition pad 11, sample turn to rotating disk 10 make each part sample along self vertical axis from turnback, through another transition pad, be sent to the sample relaying travelling belt 9 of turning back again, process like this, by several times turn to turn back after, finally by outlet travelling belt 8, by guard chamber outlet 13, suffer a ground by one of irradiation sample, send extension radiation protection chamber 6, make the each several part in each sample packaging be subject to identical x-irradiation amount.Under stable accelerator radiation parameter, by synchronization modulation, change repeatedly each travelling belt transfer rate and each rotary speed in Zigzag type sample transport mechanism, the x-irradiation amount that can regulate and control to be subject to irradiation sample to be subject to.
Claims (6)
1. electron linear accelerator two-dimensional scan high-energy X-ray irradiation system, comprise electron accelerator (1) and appended two-dimensional scan deflection coil magnet ring (3), transmission-type x-ray conversion target (4), extend radiation protection chamber (6), horizontal Zigzag type sample transport mechanism repeatedly, it is characterized in that: electron accelerator (1) is in Horizontal type, its electron beam exit wound of bullet titanium window (2) vacuum pipe periphery is before provided with two-dimensional scan deflection coil (3), on the outer central shaft of electron beam exit wound of bullet titanium window (2), a distance is provided with the transmission-type x-ray conversion target (4) long rectangle and that parallel with electron beam exit wound of bullet titanium window (2) face that large area horizontal direction is major axis, between electron beam exit wound of bullet titanium window (2) and transmission-type x-ray conversion target (4), by tubaeform assisted vacuum protective cover (5), be connected, from the position of transmission-type x-ray conversion target (4), the sub-central beam axis of para-electric extends as central shaft, and being provided with inner space section is that horizontal direction is the extension radiation protection chamber (6) of the long rectangle of major axis, by sample inlet travelling belt (7), a plurality of sample relaying, turn back that travelling belt (9), a plurality of sample turn to that rotating disk (10), a plurality of transition pad (11) and sample export travelling belt (8) form laterally repeatedly Zigzag type sample transport mechanism be placed on the bottom surface of extending in radiation protection chamber (6), by import travelling belt (7) and outlet travelling belt (8), by opening at the guard chamber injection port (12) extending on the sidewall of radiation protection chamber (6), be connected with guard chamber outlet (13) and outside respectively.
2. electron linear accelerator two-dimensional scan high-energy X-ray irradiation system according to claim 1, it is characterized in that: tubaeform assisted vacuum protective cover (5) outer wall is by meeting the plumbous of radiation protection requirement adequate thickness and supporting cladding aluminium alloy and make, connect and clad the space between electron beam exit wound of bullet titanium window (2) and transmission-type x-ray conversion target (4).
3. electron linear accelerator two-dimensional scan high-energy X-ray irradiation system according to claim 1, it is characterized in that: transmission-type x-ray conversion target (4) target surface and electron beam central axis are perpendicular, target surface is centered close on the outer central shaft of electron beam exit wound of bullet titanium window (2), distance between transmission-type x-ray conversion target (4) and electron beam exit wound of bullet titanium window (2) equals by irradiation sample external packing height electron beam scan area height on target, and scanning plane width is sample external packing width 8-10 times; Transmission-type x-ray conversion target (4) is shaped as the long rectangle that horizontal direction is major axis, area is a bit larger tham position electron beam scanning area, the one side that faces electron impact is made by the high atomic number simple metal diaphragm that is slightly larger than incident electron range, the thickness that the back side is slightly larger than electronic secondary range by high-termal conductivity low atomic number metal material supports, and propping material is cooling or adopt directly air-cooled by circulating water flow.
4. electron linear accelerator two-dimensional scan high-energy X-ray irradiation system according to claim 1, it is characterized in that: the inner space section that extends radiation protection chamber (6) is that horizontal direction is the long rectangle of major axis, the width of interior section and be greater than highly respectively transmission-type x-ray conversion target (4) width and height, from the position of transmission-type x-ray conversion target (4), the sub-central beam axis of para-electric stretches and outwards stretches as central shaft, and the horizontal width of interior section is slightly widened gradually and highly substantially remained unchanged; Extend respectively facing the wall and meditating and built up by concrete of radiation protection chamber (6); Near transmission-type x-ray conversion target (4) position, offer guard chamber injection port (12) extending in the side walls of (6) one of radiation protection chambers, on a plurality of sample relayings are turned back the identical faces sidewall of distance and position of width of travelling belt (9), also offer guard chamber outlet (13) with it; The width of guard chamber injection port (12) and guard chamber outlet (13) is slightly larger than the width of travelling belt, and height is a little more than the height that transmits sample.
5. electron linear accelerator two-dimensional scan formula high-energy X-ray robotization irradiation system according to claim 4, it is characterized in that: extend radiation protection chamber (6) while adopting electron beam central axis lower than semi-underground design below Earth surface plane, utilize natural rock or soil layer Substitute For Partial wall thickness.
6. electron linear accelerator two-dimensional scan formula high-energy X-ray robotization irradiation system according to claim 1, it is characterized in that: laterally Zigzag type sample transport mechanism turns to rotating disk (10), a plurality of transition pad (11) and outlet travelling belt (8) to form by turn back travelling belt (9), a plurality of sample of import travelling belt (7), a plurality of sample relaying repeatedly, be placed in and extend in radiation protection chamber (6), be distributed in whole bottom surface; Import travelling belt (7), sample relaying turn back travelling belt (9) and outlet travelling belt (8) parallel close-packed arrays mutually, each travelling belt direction of transfer is all vertical with electron beam central axis extension line; Each travelling belt width is identical, is slightly larger than and transmits sample external packing size, and travelling belt transmission plane is identical with extension bottom surface, radiation protection chamber height, and each travelling belt conveyer line speed is controlled and remained identical by synchronous motor; It is contrary that adjacent travelling belt transmits surperficial traffic direction; Each sample turns to rotating disk (10) to be crisscross arranged respectively at the two ends of adjacent travelling belt, connect adjacent travelling belt, sample turns to rotating disk (10) radius to be slightly larger than travelling belt width, turntable surface and travelling belt transmission plane are substantially in same level, and velocity of rotation is controlled and remained that the linear velocity of radius 1/2 position on turntable surface is slightly faster than each travelling belt conveyer line speed by synchronous motor; Length and the width of transition pad (11) equal travelling belt width, are placed in each travelling belt termination and turn to rotating disk phase joining place and hide half turntable surface, are fixed on a little more than turntable surface planimetric position.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979911A (en) * | 2017-12-26 | 2018-05-01 | 同方威视技术股份有限公司 | Drawing and pulling type bogey and accelerator section structure for accelerator |
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| CN111681802A (en) * | 2020-07-15 | 2020-09-18 | 东莞市百晟新材料科技有限公司 | Electron accelerator irradiation system |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317596Y (en) * | 1997-11-22 | 1999-05-05 | 深圳奥沃国际科技发展有限公司 | Small accelerator irradiation device |
| CN1242253A (en) * | 1998-03-27 | 2000-01-26 | 株式会社荏原制作所 | Electron beam irradiation device |
| US6463123B1 (en) * | 2000-11-09 | 2002-10-08 | Steris Inc. | Target for production of x-rays |
| JP2003121595A (en) * | 2001-10-12 | 2003-04-23 | Nissin High Voltage Co Ltd | Electron beam irradiation apparatus |
| US20050178977A1 (en) * | 2001-04-02 | 2005-08-18 | Mitec Incorporated | Irradiation system and method |
| CN201044186Y (en) * | 2007-06-21 | 2008-04-02 | 天津市富辰高新技术公司 | Semi-underground irradiation processed protection device |
| US20100127169A1 (en) * | 2008-11-24 | 2010-05-27 | Varian Medical Systems, Inc. | Compact, interleaved radiation sources |
| 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 |
| CN102789942A (en) * | 2012-08-23 | 2012-11-21 | 汇佳生物仪器（上海）有限公司 | Special transmission-type direct water-cooling anode super-large focus X ray tube for radiation |
| JP2012242145A (en) * | 2011-05-17 | 2012-12-10 | Ihi Corp | Electron beam irradiation apparatus |
| CN103140012A (en) * | 2011-11-25 | 2013-06-05 | 中国原子能科学研究院 | Electron Irradiation Accelerator with Titanium Film Protection Function |
| CN203689930U (en) * | 2014-01-20 | 2014-07-02 | 汇佳生物仪器（上海）有限公司 | Two-dimensional scanning high-energy X-ray irradiation system of electron linear accelerator |
-
2014
- 2014-01-20 CN CN201410023724.8A patent/CN103762007B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317596Y (en) * | 1997-11-22 | 1999-05-05 | 深圳奥沃国际科技发展有限公司 | Small accelerator irradiation device |
| CN1242253A (en) * | 1998-03-27 | 2000-01-26 | 株式会社荏原制作所 | Electron beam irradiation device |
| US6463123B1 (en) * | 2000-11-09 | 2002-10-08 | Steris Inc. | Target for production of x-rays |
| US20050178977A1 (en) * | 2001-04-02 | 2005-08-18 | Mitec Incorporated | Irradiation system and method |
| JP2003121595A (en) * | 2001-10-12 | 2003-04-23 | Nissin High Voltage Co Ltd | Electron beam irradiation apparatus |
| CN201044186Y (en) * | 2007-06-21 | 2008-04-02 | 天津市富辰高新技术公司 | Semi-underground irradiation processed protection device |
| US20100127169A1 (en) * | 2008-11-24 | 2010-05-27 | Varian Medical Systems, Inc. | Compact, interleaved radiation sources |
| 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 |
| JP2012242145A (en) * | 2011-05-17 | 2012-12-10 | Ihi Corp | Electron beam irradiation apparatus |
| CN103140012A (en) * | 2011-11-25 | 2013-06-05 | 中国原子能科学研究院 | Electron Irradiation Accelerator with Titanium Film Protection Function |
| CN102789942A (en) * | 2012-08-23 | 2012-11-21 | 汇佳生物仪器（上海）有限公司 | Special transmission-type direct water-cooling anode super-large focus X ray tube for radiation |
| CN203689930U (en) * | 2014-01-20 | 2014-07-02 | 汇佳生物仪器（上海）有限公司 | Two-dimensional scanning high-energy X-ray irradiation system of electron linear accelerator |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979911A (en) * | 2017-12-26 | 2018-05-01 | 同方威视技术股份有限公司 | Drawing and pulling type bogey and accelerator section structure for accelerator |
| CN108811295A (en) * | 2018-07-04 | 2018-11-13 | 中国原子能科学研究院 | Rotary used in a kind of cyclotron changes target drone structure |
| CN108811295B (en) * | 2018-07-04 | 2019-10-15 | 中国原子能科学研究院 | Target drone structure is rotatably changed used in a kind of cyclotron |
| CN113950338A (en) * | 2019-06-14 | 2022-01-18 | 法玛通股份有限公司 | System for sterilizing a sterilization unit and method for operating the system |
| CN111403073A (en) * | 2020-03-19 | 2020-07-10 | 哈尔滨工程大学 | Multipurpose terminal based on electron accelerator |
| CN111403073B (en) * | 2020-03-19 | 2023-01-03 | 哈尔滨工程大学 | Multipurpose terminal based on electron accelerator |
| CN111681802A (en) * | 2020-07-15 | 2020-09-18 | 东莞市百晟新材料科技有限公司 | Electron accelerator irradiation system |
| CN114545481A (en) * | 2020-11-24 | 2022-05-27 | 离子束应用股份有限公司 | Device for X-ray irradiation |
| CN114545481B (en) * | 2020-11-24 | 2024-06-04 | 离子束应用股份有限公司 | Device for X-ray irradiation |
| CN112843359A (en) * | 2021-01-15 | 2021-05-28 | 成都奕康真空电子技术有限责任公司 | Blood irradiator based on electron accelerator X-rays and irradiation method |
| CN115472329A (en) * | 2022-09-30 | 2022-12-13 | 深圳技术大学 | Irradiation device and transparent target preparation method |
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