CN116669274A - Scanning type liquid cooling X-ray transmission conversion target, electron accelerator and electronic equipment - Google Patents
Scanning type liquid cooling X-ray transmission conversion target, electron accelerator and electronic equipment Download PDFInfo
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- CN116669274A CN116669274A CN202310648824.9A CN202310648824A CN116669274A CN 116669274 A CN116669274 A CN 116669274A CN 202310648824 A CN202310648824 A CN 202310648824A CN 116669274 A CN116669274 A CN 116669274A
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- 238000001816 cooling Methods 0.000 title claims abstract description 71
- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 238000010894 electron beam technology Methods 0.000 claims abstract description 47
- 239000000110 cooling liquid Substances 0.000 claims abstract description 19
- 238000004088 simulation Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000002679 ablation Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000013077 target material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001959 radiotherapy Methods 0.000 description 2
- 230000005461 Bremsstrahlung Effects 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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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
- H05H6/00—Targets for producing nuclear reactions
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- High Energy & Nuclear Physics (AREA)
- Optics & Photonics (AREA)
- X-Ray Techniques (AREA)
- Particle Accelerators (AREA)
Abstract
The application discloses a scanning type liquid cooling X-ray transmission conversion target, an electron accelerator and electronic equipment, and relates to the technical field of electron accelerators, wherein the technical scheme is as follows: comprises a scanning coil, a scanning vacuum cavity and a liquid cooling target; the scanning coil is sleeved at the rear end corresponding to the electron beam exit window of the external accelerator of the scanning vacuum cavity and is used for realizing two-dimensional deflection scanning of the electron beam on the target; the liquid cooling target is arranged at the front end of the scanning vacuum cavity and is used for converting the energy of the electron beam bombarded on the target into X rays; the liquid cooling target is formed by splicing a plurality of target units, and a cooling channel in the target unit is provided with a flow guide piece for adjusting the flow of cooling liquid in the cooling channel. The application adopts a mode of combining electron beam scanning and liquid cooling, reduces the temperature of an electron beam bombardment area, reduces the scanning frequency and the design difficulty of a scanning magnet, improves the performance of an X-ray target, and avoids the ablation damage of a conversion target caused by high-power electron beam bombardment.
Description
Technical Field
The application relates to the technical field of electron accelerators, in particular to a scanning type liquid cooling X-ray transmission conversion target, an electron accelerator and electronic equipment.
Background
The electron accelerator is a device for generating X-rays, and is one of the most important devices in the application fields of industrial irradiation, radiotherapy, security inspection imaging, seed breeding and the like. The electron accelerator accelerates the electron to the target energy, such as 0.6-25 MeV, by means of radio frequency acceleration, linear induction acceleration and the like. Electrons of target energy bombard the target material, and part of electron energy is converted into X rays through a bremsstrahlung process. The performance of an X-ray target determines the conversion efficiency, spectrum and power that can be tolerated by the X-ray target.
Currently, the X-ray conversion targets used by electron accelerators are generally fixed, and for breeding applications, the dosage of X-rays in unit time is required to be as large as possible, and seeds in the whole area can be uniformly irradiated at a time. This requires that the X-ray target be capable of withstanding high power electron beam bombardment and uniform scanning of the electron beam focus at the target area. When the power of the electron beam is larger, the temperature of the target surface is increased sharply, so that the target surface is ablated and even loopholes are caused, the vacuum state of the accelerator is destroyed, and the power of the accelerator is severely limited by the target performance. Conventional scanning targets simply increase the scanning frequency to cope with the increase of the electron beam power, however, higher scanning frequency puts higher demands on the design and production of the scanning magnet, and greatly increases the development and production cost of the target system.
Therefore, how to study and design a scanning type liquid-cooled X-ray transmission conversion target, an electron accelerator and an electronic device capable of overcoming the defects is a problem which needs to be solved at present.
Disclosure of Invention
In order to solve the defects in the prior art, the application aims to provide a scanning type liquid-cooled X-ray transmission conversion target, an electron accelerator and electronic equipment, and adopts a mode of combining electron beam scanning and liquid cooling, so that the temperature of an electron beam bombardment area is greatly reduced, the scanning frequency and the design difficulty of a scanning magnet are reduced, the performance of the X-ray target is greatly improved, and the ablation damage of the conversion target caused by high-power electron beam bombardment is avoided.
The technical aim of the application is realized by the following technical scheme:
in a first aspect, a scanning liquid-cooled X-ray transmission conversion target is provided, comprising a scanning coil, a scanning vacuum chamber, and a liquid-cooled target;
the scanning coil is sleeved at the rear end corresponding to the electron beam exit window of the external accelerator of the scanning vacuum cavity and is used for realizing two-dimensional deflection scanning of the electron beam on the target;
the liquid cooling target is arranged at the front end of the scanning vacuum cavity and is used for converting the energy of the electron beam bombarded on the target into X rays;
the liquid cooling targets are formed by splicing a plurality of target units which are connected with a cooling liquid supply end together, and a cooling channel in each target unit is provided with a flow guide piece for adjusting the flow of cooling liquid in the cooling channel.
Further, the flow guide piece is a flow guide plate with a through hole penetrating through the middle part, and the outer wall of the flow guide plate is connected with the inner wall of the cooling channel in a sealing way;
the diameter of the through hole in the guide plate is determined by performing heat and fluid simulation analysis according to the position of the target unit where the guide plate is located, and the heat and fluid simulation analysis ensures that the temperature fluctuation among the target units does not exceed a preset value when the power of the electron beam changes within a preset power range and in the scanning process.
Further, one end of the guide plate, which is close to the liquid inlet copper pipe in the cooling channel, is a plane.
Further, one end of the guide plate, which is close to the target liquid inlet end in the cooling channel, is an inner conical curved surface.
Further, the flow guide piece comprises an inlet end limiting ring, an outlet end limiting ring and a movable plate, wherein the inlet end limiting ring and the outlet end limiting ring are arranged in the cooling channel at intervals, and the movable plate is positioned between the inlet end limiting ring and the outlet end limiting ring;
the honeycomb grating is embedded into the outlet end limiting ring, the grating holes in the honeycomb grating are movably connected with movable rods arranged along the axial direction of the cooling channel, and one ends of the movable rods are fixedly connected with the movable plates;
the movable rod is sleeved with a spring, one end of the spring is fixedly connected with the movable plate, and the other end of the spring is fixedly connected with the honeycomb grating.
Further, a water cooling pipe is arranged in the scanning vacuum cavity.
Further, the water-cooled tube is arranged in the scanning vacuum cavity in a folding manner, the inlet end of the water-cooled tube extends out of the side face of the front end of the scanning vacuum cavity, and the outlet end of the water-cooled tube extends out of the side face of the rear end of the scanning vacuum cavity.
Furthermore, the scanning vacuum cavity is in a horn shape in front of a rear circle or in a triangle trapezoid shape with a small rear part and a large front part.
In a second aspect, there is provided an electron accelerator comprising an accelerator for emitting an electron beam and a scanning liquid cooled X-ray transmissive conversion target as described in the first aspect.
In a third aspect, there is provided an electronic device comprising at least one electron accelerator as described in the second aspect.
Compared with the prior art, the application has the following beneficial effects:
1. the scanning type liquid cooling X-ray transmission conversion target provided by the application adopts a mode of combining electron beam scanning and liquid cooling, so that the temperature of an electron beam bombardment area is greatly reduced, the scanning frequency and the design difficulty of a scanning magnet are reduced, the performance of the X-ray target is greatly improved, and the ablation damage of the conversion target caused by high-power electron beam bombardment is avoided;
2. according to the application, through heat and fluid simulation analysis, through holes with diameters suitable for guide plates in target units at different positions are flexibly designed, so that temperature fluctuation among the target units in the process of changing electron beam power within a preset power range and scanning does not exceed a preset value, stability and reliability of an X-ray transmission conversion target in application are enhanced, and the method is applicable to electron beams with larger power range, can perform certain adjustment according to the on-site electron beam state, and has certain universality;
3. according to the application, one end of the guide plate, which is close to the target liquid inlet end in the cooling channel, is an inner conical surface, so that the generation of an air cannon can be reduced, and the situation that bubbles cannot be discharged can be effectively prevented;
4. the application also realizes the pore size adjustment for cooling liquid circulation in the cooling channel in a mode of balancing the cooling liquid pressure and the elastic force in the cooling channel, and has higher flexibility, universality and adaptability.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a conversion target according to an embodiment of the present application;
FIG. 2 is a schematic diagram showing the internal structure of a conversion target according to an embodiment of the present application;
FIG. 3 is a schematic view of a flow guide according to an embodiment of the present application;
FIG. 4 is a schematic view of another embodiment of a baffle according to the present application;
in the drawings, the reference numerals and corresponding part names:
1. a scanning coil; 2. scanning the vacuum cavity; 3. a liquid-cooled target; 4. a target unit; 5. a cooling channel; 6. a water-cooled tube; 7. a vacuum extraction opening; 8. a liquid inlet copper pipe; 9. a target liquid inlet end; 10. a deflector; 11. an inlet end limiting ring; 12. an outlet limit ring; 13. a movable plate; 14. a movable rod; 15. a spring; 16. a honeycomb grid.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present application, the present application will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present application and the descriptions thereof are for illustrating the present application only and are not to be construed as limiting the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Examples: the scanning type liquid cooling X-ray transmission conversion target, as shown in fig. 1 and 2, comprises a scanning coil 1, a scanning vacuum cavity 2 and a liquid cooling target 3. The scanning coil 1 is sleeved at the rear end corresponding to the electron beam exit window of the external accelerator of the scanning vacuum cavity 2 and is used for realizing two-dimensional deflection scanning of the electron beam on the target. And a liquid cooling target 3 which is arranged at the front end of the scanning vacuum cavity 2 and is used for converting the energy of the electron beam bombarded on the target into X-rays. The liquid cooling target 3 is formed by splicing a plurality of target units 4 which are connected with a cooling liquid supply end together, and a cooling channel 5 in the target unit 4 is provided with a flow guide piece for adjusting the flow of cooling liquid in the cooling channel 5.
The application adopts the mode of combining electron beam scanning and liquid cooling, greatly reduces the temperature of an electron beam bombardment area, simultaneously reduces the scanning frequency and the design difficulty of a scanning magnet, greatly improves the performance of an X-ray target, and avoids the ablation damage of a conversion target caused by high-power electron beam bombardment.
In the present embodiment, a water cooling pipe 6 is provided inside the scanning vacuum chamber 2. The water-cooled tube 6 is arranged in the scanning vacuum chamber 2 in a folding manner, the inlet end of the water-cooled tube 6 extends out of the side surface of the front end of the scanning vacuum chamber 2, and the outlet end of the water-cooled tube 6 extends out of the side surface of the rear end of the scanning vacuum chamber 2. In addition, the scanning vacuum chamber 2 has a horn shape in front of a rear circle or a triangle trapezoid with a small rear and a large front.
The high-energy electron beam (A) enters the target cavity through the scanning coil 1 or the deflection magnet, two-dimensional scanning on the liquid cooling target 3 is realized under the action of the scanning coil 1 or the deflection magnet, and the generated X-rays are emitted to the working area through the window. Heat deposited on the target is partially absorbed and dissipated through the chamber by thermal radiation, and partially conducted to the coolant through the heat sink and chamber walls.
It should be noted that the working target includes, but is not limited to, tungsten, tantalum, molybdenum, and alloy materials, such as a lytungsten alloy. A portion of the energy of the electron beam interacting with the target atoms is converted into photons (X-rays) for transmission, and another portion is converted into thermal energy for dissipation. The bottom of the working target is a cooling device which consists of a cooling channel 5, a flow guiding piece and a main body. The cooling liquid is usually deionized water, and other liquids with good fluidity and strong heat conduction capability, such as silicone oil and the like, can be selected. The flow guiding piece plays a role in guiding flow and controls the flow direction, the proportion and the like of the cooling liquid. The cooling body is made of a material with good thermal conductivity, such as copper. The cooling component, the target material and the like are fixed on the liquid cooling cavity wall, and meanwhile, the cavity wall combines and splices a plurality of target units 4 into a large-size target body. The cavity wall is made of a material with high mechanical strength, good processability and easy welding, such as stainless steel. The two adjacent target units 4 are sealed by welding, such as argon arc welding, laser welding and the like, and the working end and the cold end are required to be sealed and welded for ensuring vacuum leakage rate and reliability.
The heat management of the liquid cooled target 3 is one of the cores of the target design, the heat input port is the high-power electron beam generated by the accelerator, and the heat output port is the target cooling liquid and the cavity wall cooling water. The heat conversion process focuses on electron beam targeting, where a portion is converted to X-ray energy: the effect on electron beams with different energies and different targets is simulated through Meng Ka, and the conversion efficiency is about 5-30% in most cases; most of the heat is absorbed by the target material, the deposition efficiency is about 50-70%, and the heat is conducted by the side surface and the target body, so that the temperature of the target body is raised, and the heat is absorbed and taken away by the target body cooling liquid (main) and the cavity cooling water (minor); the rest energy is radiated on the cavity through heat radiation, so that the temperature of the cavity rises, and the surplus energy is taken away by the cooling water of the cavity. Therefore, when the heat management simulation design is combined with the engineering design, the design of the cavity water cooling pipe 6 and the water flow thereof are regulated, and more importantly, the target cooling channel 5 and the type and flow of the cooling liquid are optimized.
As an alternative embodiment, as shown in fig. 3, the flow guiding member is a flow guiding plate 10 with a through hole penetrating through the middle part, and the outer wall of the flow guiding plate 10 is in sealing connection with the inner wall of the cooling channel 5; the diameter of the through hole in the deflector 10 is determined by performing heat and fluid simulation analysis according to the position of the target unit 4 where the deflector 10 is located, and the heat and fluid simulation analysis ensures that the temperature fluctuation between each target unit 4 does not exceed a preset value when the power of the electron beam changes within a preset power range and during scanning.
One end of the guide plate 10, which is close to the liquid inlet copper pipe 8 in the cooling channel 5, is a plane, and one end of the guide plate 10, which is close to the target liquid inlet end 9 in the cooling channel 5, is an inner conical curved surface.
It should be noted that, the liquid inlet copper tube 8 is welded at the liquid inlet end of the target, the overall shape of the baffle 10 is similar to a column body with a hole in the middle, the appearance can be a column or a square column, and the number and the aperture of the holes are determined according to the required flow. The bottom of the front end of the guide plate 10 is ground flat so as to facilitate the welding of the liquid inlet copper pipe 8. The vicinity of the holes of the deflector 10 needs to be polished to be smooth after being rounded. The aperture of the rear end of the deflector 10 gradually becomes larger until the aperture is consistent with the target liquid inlet end 9, so that bubbles are prevented from being unable to be discharged. For a single hole baffle 10, the size of the opening directly determines the flow, which is given by thermal and fluid simulation, depending on the location of the target unit 4 where the baffle 10 is located.
In general, the plurality of target units 4 in one liquid cooling target 3 are all connected with a cooling liquid supply end, so that the internal hydraulic pressures of the target units 4 at different positions are different.
As another alternative embodiment, as shown in fig. 4, the flow guiding member includes an inlet end limiting ring 11, an outlet end limiting ring 12 and a movable plate 13, wherein the inlet end limiting ring 11 and the outlet end limiting ring 12 are installed in the cooling channel 5 at intervals, and the movable plate 13 is located between the inlet end limiting ring 11 and the outlet end limiting ring 12; the outlet end limiting ring 12 is embedded and provided with a honeycomb grating 16, grating holes in the honeycomb grating 16 are movably connected with a movable rod 14 arranged along the axial direction of the cooling channel 5, and one end of the movable rod 14 is fixedly connected with the movable plate 13; the movable rod 14 is sleeved with a spring 15, one end of the spring 15 is fixedly connected with the movable plate 13, and the other end of the spring 15 is fixedly connected with the honeycomb grid 16.
It should be noted that, when the cooling hydraulic pressure in the cooling channel 5 is too small, the movable plate 13 contacts with the inlet end limiting ring 11 under the action of the elastic force of the spring 15, so that the cooling channel 5 can be fully blocked, and when the current pressure is too large and does not exceed the elastic deformation limit of the spring 15, the movable plate 13 compresses the spring 15 and maintains a certain gap with the outlet end limiting ring 12.
The application also realizes the pore size adjustment for cooling liquid circulation in the cooling channel 5 by balancing the cooling liquid pressure and the elastic force in the cooling channel 5, and has higher flexibility, universality and adaptability.
The scanning liquid cooling X-ray transmission conversion target can be applied to the application fields of industrial irradiation, radiotherapy, security inspection imaging, seed breeding and the like
Working principle: the application adopts a mode of combining electron beam scanning and liquid cooling, thereby greatly reducing the temperature of an electron beam bombardment area, simultaneously reducing the scanning frequency and the design difficulty of a scanning magnet, greatly improving the performance of an X-ray target and avoiding the ablation damage of a conversion target caused by high-power electron beam bombardment; in addition, through heat and fluid simulation analysis, through holes with diameters suitable for the guide plates 10 in the target units 4 at different positions are flexibly designed, so that the temperature fluctuation among the target units 4 in the process of changing the power of the electron beam within a preset power range and scanning does not exceed a preset value, the stability and reliability of the X-ray transmission conversion target in application are enhanced, and meanwhile, the method is suitable for electron beams with larger power range, can perform certain adjustment according to the on-site electron beam state, and has certain universality; in addition, the application realizes the adjustment of the size of the pore in the cooling channel 5 for the cooling liquid to circulate in a mode that the cooling liquid pressure and the elastic force in the cooling channel 5 are balanced, and has higher flexibility and higher universality and adaptability.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. The scanning type liquid cooling X-ray transmission conversion target is characterized by comprising a scanning coil (1), a scanning vacuum cavity (2) and a liquid cooling target (3);
the scanning coil (1) is sleeved at the rear end corresponding to the electron beam exit window of the external accelerator of the scanning vacuum cavity (2) and is used for realizing two-dimensional deflection scanning of the electron beam on the target;
the liquid cooling target (3) is arranged at the front end of the scanning vacuum cavity (2) and is used for converting electron beam energy bombarded on the target into X rays;
the liquid cooling target (3) is formed by splicing a plurality of target units (4) which are connected with a cooling liquid supply end together, and a cooling channel (5) in the target units (4) is provided with a flow guide piece for adjusting the flow of cooling liquid in the cooling channel (5).
2. The scanning type liquid cooling X-ray transmission conversion target according to claim 1, wherein the flow guide piece is a flow guide plate (10) with a through hole penetrating through the middle part, and the outer wall of the flow guide plate (10) is in sealing connection with the inner wall of the cooling channel (5);
the diameter of the through hole in the guide plate (10) is determined by heat and fluid simulation analysis according to the position of the target unit (4) where the guide plate (10) is located, and the heat and fluid simulation analysis ensures that the temperature fluctuation among the target units (4) does not exceed a preset value when the power of the electron beam changes within a preset power range and in the scanning process.
3. Scanning liquid-cooled X-ray transmission conversion target according to claim 1, characterized in that the end of the deflector (10) close to the liquid-inlet copper tube (8) in the cooling channel (5) is plane.
4. The scanning liquid-cooled X-ray transmission conversion target according to claim 1, wherein one end of the deflector (10) close to the target liquid inlet end (9) in the cooling channel (5) is an inner conical curved surface.
5. The scanning type liquid cooling X-ray transmission conversion target according to claim 1, wherein the flow guide piece comprises an inlet end limiting ring (11), an outlet end limiting ring (12) and a movable plate (13), the inlet end limiting ring (11) and the outlet end limiting ring (12) are installed in the cooling channel (5) at intervals, and the movable plate (13) is located between the inlet end limiting ring (11) and the outlet end limiting ring (12);
the outlet end limiting ring (12) is embedded and provided with a honeycomb grating (16), grating holes in the honeycomb grating (16) are movably connected with a movable rod (14) arranged along the axial direction of the cooling channel (5), and one end of the movable rod (14) is fixedly connected with the movable plate (13);
the movable rod (14) is sleeved with a spring (15), one end of the spring (15) is fixedly connected with the movable plate (13), and the other end of the spring (15) is fixedly connected with the honeycomb grid (16).
6. Scanning liquid-cooled X-ray transmission conversion target according to claim 1, characterized in that a water-cooled tube (6) is arranged inside the scanning vacuum chamber (2).
7. The scanning liquid-cooled X-ray transmission conversion target according to claim 6, characterized in that the water-cooled tube (6) is arranged in the scanning vacuum chamber (2) in a folded form, an inlet end of the water-cooled tube (6) extends from a front end side of the scanning vacuum chamber (2), and an outlet end of the water-cooled tube (6) extends from a rear end side of the scanning vacuum chamber (2).
8. Scanning liquid-cooled X-ray transmission conversion target according to claim 1, characterized in that the scanning vacuum chamber (2) is horn-shaped in front of a back circle or triangular trapezoid-shaped in front of a back small.
9. An electron accelerator comprising an accelerator for emitting an electron beam and a scanning liquid-cooled X-ray transmission conversion target according to any one of claims 1 to 8.
10. An electronic device comprising at least one electron accelerator according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310648824.9A CN116669274A (en) | 2023-06-02 | 2023-06-02 | Scanning type liquid cooling X-ray transmission conversion target, electron accelerator and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310648824.9A CN116669274A (en) | 2023-06-02 | 2023-06-02 | Scanning type liquid cooling X-ray transmission conversion target, electron accelerator and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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- 2023-06-02 CN CN202310648824.9A patent/CN116669274A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109362169B (en) * | 2018-12-24 | 2024-08-09 | 中广核达胜加速器技术有限公司 | Support conversion device of electron accelerator X-ray conversion target |
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