Environment-friendly electron accelerator and electron beam focusing device

Abstract

The invention discloses an environment-friendly electron accelerator and an electron beam focusing device.The electron accelerator comprises a shell barrel, an insulating device, a base and an accelerating tube, the insulating device is arranged on the outer side of the accelerating tube, and the shell barrel is arranged on the outer side of the insulating device; the electron beam focusing device comprises an electromagnetic coil, the electromagnetic coil is fixed between the shell cylinder and the insulation device through a fixing piece, and the electromagnetic coil is electrically connected with the current adjusting circuit. A solid insulation structure is adopted, the pollution problem caused by gas insulation is solved, the design of the focusing coil is provided, electron beams can be effectively focused and restrained in the transmission process, the stability and the centrality of electron beams are improved, and the transmission efficiency is improved. The focusing coil is tightly and fixedly connected with the shell, so that the stability and the reliability of the focusing effect are ensured, and a good magnetic conduction function is achieved.

Description

Technical Field

[0001] The invention relates to an environmentally friendly electron accelerator and an electron beam focusing device. Background Art

[0002] An electron accelerator is a device used to accelerate charged particles. High-frequency and high-voltage accelerators accelerate charged particles to high energies through the action of high-frequency and high-voltage electric fields. They are widely used in research fields, including particle physics, nuclear physics, and materials science. Known high-frequency and high-voltage accelerators include a sealed housing filled with high-voltage insulating gas, such as sulfur hexafluoride (SF6), for insulation and heat dissipation.

[0003] However, the insulation performance of high-voltage insulating gas is limited and often results in bulky equipment. At the same time, among non-CO2 greenhouse gases, sulfur hexafluoride (SF6) has the strongest greenhouse effect and is listed as one of the six greenhouse gases with restricted use.

[0004] The greenhouse effect potential of SF6 is 23,500 times that of CO2, and its lifespan in the atmosphere is about 3,200 years. This means that the impact of 1 kg of SF6 leaking into the atmosphere on global warming is equivalent to about 23.5 tons of carbon dioxide, and it can be considered that it will remain in the atmosphere forever and cannot be degraded, causing great harm to the environment.

[0005] Electron accelerators based on high-voltage insulating gas have the disadvantages of being bulky, complex in structure, harmful to the atmospheric environment, and difficult to maintain.

[0006] In addition, in electron accelerators, the focusing and confinement of electron beams are crucial to ensure the stability and concentration of electron beams. The traditional solution uses the voltage difference between electrodes to form acceleration and electric field focusing. Although it can achieve the focusing effect, the focusing performance is not ideal and the focusing effect is not good. Therefore, the development of a new type of focusing coil accelerator tube has become a hot topic in current research. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the prior art accelerator using gas insulation, such as large size, complex structure, harm to the atmospheric environment, difficult maintenance, unsatisfactory focusing performance and poor focusing effect, and to provide an environmentally friendly electron accelerator and electron beam focusing device that overcomes the pollution problem caused by using gas insulation and provides a focusing coil design.

[0008] The present invention solves the above technical problems through the following technical solutions: An environmentally friendly electron accelerator, characterized in that the electron accelerator comprises an outer shell cylinder, an insulating device, a base, an accelerating tube and an electron beam focusing device, wherein the insulating device is arranged on the outside of the accelerating tube, and the outer shell cylinder is arranged on the outside of the insulating device. The electron beam focusing device comprises an electromagnetic coil, which is fixed between the outer shell cylinder and the insulating device through a fixing member, and the electromagnetic coil is electrically connected to the current regulating circuit.

[0009] Preferably, the electron accelerator comprises a shell cylinder, an insulating device, a base, an accelerating tube, an electron beam focusing device and a high-voltage bracket. The outer shell cylinder, the accelerating tube and the high-voltage support are all arranged on the base, the high-voltage support is arranged on the outside of the accelerating tube, the outer shell cylinder is arranged on the outside of the high-voltage support, and the insulating device includes a solid insulating cylinder and an insulating top cover. The solid insulating cylinder is arranged between the outer shell cylinder and the high-voltage support, the top of the solid insulating cylinder is fixed to the insulating top cover, the bottom of the solid insulating cylinder is arranged on the base, the solid insulating cylinder includes several layers of insulating films, and the insulating top cover is arranged above the high-voltage support; The electron beam focusing device comprises an electromagnetic coil, which is fixed between the outer shell cylinder and the insulating device through a fixing member, and the electromagnetic coil is electrically connected to the current regulating circuit.

[0010] Preferably, the insulating top cover comprises an insulating tube installation groove, and the solid insulating tube is installed in the insulating tube installation groove; The electron accelerator comprises a high voltage cap arranged above the high voltage support; The solid insulating tube is higher than the high-voltage cap. A mounting protrusion is provided below the insulating top cover. The lower surface shape of the mounting protrusion matches the upper surface shape of the high-voltage cap. The insulating top cover is fixed to the high-voltage cap by insulating sealant.

[0011] Preferably, the electron accelerator includes a liquid-cooled heat sink, which includes a liquid inlet, a liquid outlet and an insulating liquid. The insulating liquid flows through the solid insulating tube, the high-voltage bracket and the outside of the accelerating tube. The liquid inlet is divided into a first pipeline and a second pipeline within the outer shell cylinder. The first pipeline is connected to the top of the outer shell cylinder, and the second pipeline is connected to the high-voltage cap on the top of the high-voltage bracket.

[0012] Preferably, the electron beam focusing device comprises a coil housing, the electromagnetic coil is arranged inside the coil housing, and the coil housing is fixed between the housing cylinder and the insulating device through a fixing member.

[0013] Preferably, the fixing member is a clamping member, and the coil housing is fixed to the inner surface of the housing cylinder through the clamping member; or, The fixing member is a bolt, and the coil housing is fixed to the inner surface of the housing cylinder by the bolt.

[0014] Preferably, the fixing member is an insulating glue, and the coil housing is fixed to the inner surface of the housing cylinder by the insulating glue; or, The coil housing is fixed above the base through the fixing member.

[0015] Preferably, the electromagnetic coil comprises a plurality of sub-coils, each of which is wound with a wire, and the sub-coils are stacked and fixed on the outer shell cylinder.

[0016] Preferably, the base is provided with a wire through hole for passing a wire, and the electromagnetic coil is electrically connected to the current regulating circuit through the wire; the access pin and the output pin of the electromagnetic coil are both arranged at the bottom of the electromagnetic coil, and the access pin and the output pin are electrically connected to the current regulating circuit through the wire.

[0017] Preferably, a high-voltage electrode is provided on the outer side of the solid insulating cylinder, and the high-voltage electrode is provided between the electromagnetic coil and the solid insulating cylinder.

[0018] The present invention also provides a focusing accelerating tube, which is characterized in that the focusing accelerating tube comprises an accelerating tube and an electron beam focusing device, and the focusing accelerating tube is used for the environmentally friendly electron accelerator as described above.

[0019] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0020] The positive and progressive effects of the present invention are: The present invention provides a design of a focusing coil, which enables the electron beam to be effectively focused and constrained during transmission, thereby improving the stability and concentration of the electron beam flow. The tight and fixed connection between the focusing coil and the shell ensures the stability and reliability of the focusing effect and has a good magnetic conductivity function. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of an environmentally friendly electron accelerator according to Example 1 of the present invention.

[0022] Figure 2 FIG. 4 is another structural schematic diagram of the environmentally friendly electron accelerator according to Embodiment 1 of the present invention.

[0023] Figure 3 FIG. 4 is another structural schematic diagram of the environmentally friendly electron accelerator according to Embodiment 1 of the present invention.

[0024] Figure 4This is a schematic structural diagram of the insulating top cover of Example 1 of the present invention.

[0025] Figure 5 FIG. 4 is another structural schematic diagram of the environmentally friendly electron accelerator according to Embodiment 1 of the present invention.

[0026] Figure 6 FIG. 4 is another structural schematic diagram of the environmentally friendly electron accelerator according to Embodiment 1 of the present invention.

[0027] Figure 7 Schematic diagram of the structure of an environmentally friendly electron accelerator according to Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples. Example

[0029] In this embodiment, the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] See also Figures 1 to 6 This embodiment provides an environmentally friendly electron accelerator, which includes a shell cylinder 101, an insulating device 102, a base 103, an accelerating tube 104, an electron beam focusing device 100 and a high-voltage bracket 1031.

[0031] The outer shell cylinder 101, the accelerating tube and the high-voltage support are all arranged on the base, the high-voltage support is arranged outside the accelerating tube, the outer shell cylinder is arranged outside the high-voltage support, and the insulating device 102 includes a solid insulating cylinder 1021 and an insulating top cover 1022. The solid insulating cylinder is arranged between the outer shell cylinder and the high-voltage support, the top of the solid insulating cylinder is fixed to the insulating top cover, the bottom of the solid insulating cylinder is arranged on the base, the solid insulating cylinder includes several layers of insulating films, and the insulating top cover is arranged above the high-voltage support; The solid insulating cylinder comprises a fixed cylinder for supporting, and the fixed cylinder can be diamond, quartz, injection molding or ceramic. The insulating film is wound onto the fixed cylinder to form the solid insulating cylinder.

[0032] The insulating film is a polyimide film, the thickness of a single insulating film is 0.01 mm to 10 mm, the total number of layers of the insulating film is 600 to 2200 layers, and in this embodiment, the total number of layers of the insulating film is preferably 1800 layers.

[0033] The electron beam focusing device 100 includes an electromagnetic coil, which is fixed between the outer shell cylinder and the insulating device through a fixing member, and the electromagnetic coil is electrically connected to the current regulating circuit 105 .

[0034] The insulating top cover includes an insulating cylinder installation groove, and the solid insulating cylinder is installed in the insulating cylinder installation groove 1024; The electron accelerator includes a high voltage cap 1032 disposed above the high voltage bracket 1031; The solid insulating tube is higher than the high-voltage cap. A mounting protrusion 1023 is provided below the insulating top cover 1022. The lower surface shape of the mounting protrusion matches the upper surface shape of the high-voltage cap. The insulating top cover is fixed to the high-voltage cap by insulating sealant.

[0035] The electron accelerator includes a liquid cooling device 107, and the liquid cooling device includes a liquid inlet, a liquid outlet, and an insulating liquid.

[0036] The insulating liquid flows through the solid insulating tube, the high voltage support and the outer side of the accelerating tube.

[0037] The liquid inlet is divided into a first pipeline 1071 and a second pipeline 1072 in the outer shell cylinder, the first pipeline is connected to the top of the outer shell cylinder, and the second pipeline is connected to the high-voltage cap on the top of the high-voltage support.

[0038] The liquid inlet and the liquid outlet are both arranged on the base, and the first pipeline is connected from the base to the top of the outer shell cylinder along the gap between the solid insulating cylinder and the outer shell cylinder.

[0039] Specifically, the first pipeline is connected from the base along the gap between the solid insulating cylinder and the electron beam focusing device 100 to the top of the outer shell cylinder.

[0040] The second pipeline is connected to the bottom of the first pipeline and is connected to the high-voltage cap along the gap between the high-voltage support and the accelerating tube.

[0041] The liquid cooling device further comprises an internal liquid inlet cover 1073 and an external liquid inlet cover 1074. The internal liquid inlet cover 1073 is arranged on the top of the high-voltage cap, and the external liquid inlet cover is arranged on the top of the outer shell cylinder.

[0042] The internal liquid inlet cover and the external liquid inlet cover are each provided with a liquid inlet and a plurality of liquid outlets. The first pipeline is connected to the liquid inlet of the external liquid inlet cover from below, and the second pipeline is connected to the liquid inlet of the internal liquid inlet cover from below.

[0043] The insulating liquid flows from the inner liquid inlet cover through the gap between the high-voltage support and the accelerating tube, and the insulating liquid flows from the outer liquid inlet cover through the gap between the solid insulating cylinder and the outer shell cylinder.

[0044] Specifically, the electromagnetic coil is arranged inside the coil housing, and the coil housing is fixed between the housing cylinder and the insulating device through a fixing member.

[0045] The main insulating layer of the insulating device is located inside the accelerator and is used for insulation and is also used to isolate high voltage to prevent voltage breakdown.

[0046] The electron beam focusing device is closely attached to the inner wall of the shell, and is composed of an electromagnetic coil. The intensity of the magnetic field is controlled by adjusting the current, thereby achieving focusing and confinement of the electron beam.

[0047] The shell is a steel cylinder structure and can be tightly fixedly connected to the electron beam focusing device to play a supporting, magnetic and protective role.

[0048] The fixing member is a bolt, and the coil housing is fixed to the inner surface of the housing cylinder by the bolt.

[0049] The bolt holes opened on the coil housing not only reduce the weight of the electron beam focusing device, but also improve the convenience and stability of installation.

[0050] In other embodiments, the fixing member is a clamping member, and the coil housing is fixed to the inner surface of the housing cylinder via the clamping member.

[0051] The base is provided with a wire through hole for passing a wire, and the electromagnetic coil is electrically connected to the current regulating circuit through the wire.

[0052] The input pin and the output pin of the electromagnetic coil are both arranged at the bottom of the electromagnetic coil, and the input pin and the output pin are electrically connected to the current regulating circuit through the wire 106.

[0053] Specifically, the accelerating tube is arranged on the base, and a high-voltage bracket is arranged on the outer side of the accelerating tube.

[0054] The insulating device 102 includes a solid insulating cylinder 1021 and an insulating top cover 1022 .

[0055] The solid insulating cylinder is arranged on the outer side of the high voltage support.

[0056] The insulating top cover is arranged on the top of the solid insulating cylinder and the high voltage support and is fixed on the solid insulating cylinder.

[0057] A high voltage electrode is arranged on the outer side of the solid insulating cylinder, and the high voltage electrode is arranged between the electromagnetic coil and the solid insulating cylinder.

[0058] Specifically, the electron beam focusing device extends from the control electrode to the bottom of the accelerating tube and is fixedly connected to the outer shell by bolts or glue.

[0059] The direction of the magnetic field of the electromagnetic coil is perpendicular to the transmission direction of the electron beam. By adjusting the current in the electromagnetic coil, the magnetic field strength can be changed, thereby achieving the effect of focusing and confining the electron beam. In addition, the design of the electromagnetic coil (such as material, winding density, etc.) can also be optimized according to specific needs to achieve the best focusing and confinement effect.

[0060] In order to reduce the weight of the electron beam focusing device and facilitate installation, the present invention also opens a plurality of holes on the electron beam focusing device for directly fixing the electron beam focusing device on the outer shell of the accelerating tube. This design not only simplifies the installation process, but also improves the stability and reliability of the focusing coil.

[0061] This embodiment provides a design of an electron beam focusing device, so that the electron beam can be effectively focused and constrained during transmission, thereby improving the stability and concentration of the electron beam flow. The tight and fixed connection between the electron beam focusing device and the outer shell ensures the stability and reliability of the focusing effect and has good magnetic conductivity. Example

[0062] This embodiment is basically the same as Embodiment 1, except that: The fixing piece is insulating glue, and the coil shell is fixed to the inner surface of the shell cylinder through the insulating glue. Example

[0063] This embodiment is basically the same as Embodiment 1, except that: The coil housing is fixed above the base through the fixing member. Example

[0064] Figure 7 This embodiment is basically the same as Embodiment 1, except that: The electromagnetic coil includes a plurality of sub-coils 501 , each of which is wound with a wire 502 , and the sub-coils are stacked and fixed on the outer shell cylinder.

[0065] An insulating device 102 is provided inside the electromagnetic coil.

[0066] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An environmentally friendly electron accelerator, characterized in that: The electron accelerator comprises an outer shell, an insulating device, a base, an accelerating tube and an electron beam focusing device, wherein the insulating device is arranged on the outer side of the accelerating tube, and the outer shell is arranged on the outer side of the insulating device. The electron beam focusing device comprises an electromagnetic coil, which is fixed between the outer shell cylinder and the insulating device through a fixing member, and the electromagnetic coil is electrically connected to the current regulating circuit.

2. The environmentally friendly electron accelerator according to claim 1, characterized in that: The electron accelerator comprises a high voltage support, The outer shell cylinder, the accelerating tube and the high-voltage support are all arranged on the base, the high-voltage support is arranged on the outside of the accelerating tube, the outer shell cylinder is arranged on the outside of the high-voltage support, and the insulating device includes a solid insulating cylinder and an insulating top cover. The solid insulating cylinder is arranged between the outer shell cylinder and the high-voltage support, the top of the solid insulating cylinder is fixed to the insulating top cover, the bottom of the solid insulating cylinder is arranged on the base, the solid insulating cylinder includes several layers of insulating films, and the insulating top cover is arranged above the high-voltage support; The insulating top cover comprises an insulating cylinder installation groove, and the solid insulating cylinder is installed in the insulating cylinder installation groove; The electron accelerator comprises a high voltage cap arranged above the high voltage support; The solid insulating tube is higher than the high-voltage cap. A mounting protrusion is provided below the insulating top cover. The lower surface shape of the mounting protrusion matches the upper surface shape of the high-voltage cap. The insulating top cover is fixed to the high-voltage cap by insulating sealant.

3. The environmentally friendly electron accelerator according to claim 2, characterized in that: The electron accelerator includes a liquid-cooled heat dissipation device, which includes a liquid inlet, a liquid outlet and an insulating liquid. The insulating liquid flows through the solid insulating tube, the high-voltage bracket and the outside of the accelerating tube. The liquid inlet is divided into a first pipeline and a second pipeline in the outer shell cylinder. The first pipeline is connected to the top of the outer shell cylinder, and the second pipeline is connected to the high-voltage cap on the top of the high-voltage bracket.

4. The environmentally friendly electron accelerator according to claim 1, characterized in that: The electron beam focusing device comprises a coil shell, the electromagnetic coil is arranged inside the coil shell, and the coil shell is fixed between the shell cylinder and the insulating device through a fixing member.

5. The environmentally friendly electron accelerator according to claim 4, characterized in that: The fixing member is a clamping member, and the coil housing is fixed to the inner surface of the housing cylinder through the clamping member; or, The fixing member is a bolt, and the coil housing is fixed to the inner surface of the housing cylinder by the bolt.

6. The environmentally friendly electron accelerator according to claim 4, characterized in that: The fixing member is an insulating glue, and the coil housing is fixed to the inner surface of the housing cylinder by the insulating glue; or, The coil housing is fixed above the base through the fixing member.

7. The environmentally friendly electron accelerator according to claim 1, characterized in that: The electromagnetic coil comprises a plurality of sub-coils, each of which is wound with a wire, and the sub-coils are stacked and fixed on the outer shell cylinder.

8. The environmentally friendly electron accelerator according to claim 1, characterized in that: The base is provided with a wire through hole for passing a wire, and the electromagnetic coil is electrically connected to the current regulating circuit through the wire; the input pin and the output pin of the electromagnetic coil are both arranged at the bottom of the electromagnetic coil, and the input pin and the output pin are electrically connected to the current regulating circuit through the wire.

9. The environmentally friendly electron accelerator according to claim 1, characterized in that: A high voltage electrode is arranged on the outer side of the solid insulating cylinder, and the high voltage electrode is arranged between the electromagnetic coil and the solid insulating cylinder.

10. A focusing accelerating tube, characterized in that: The focusing accelerating tube comprises an accelerating tube and an electron beam focusing device, and the focusing accelerating tube is used in the environmentally friendly electron accelerator as claimed in any one of claims 1 to 9.

Images