[-shaped deflection magnet structure and petal-shaped accelerator with same

Abstract

The utility model discloses a [-shaped deflection magnet structure and a petal-shaped accelerator with the same. The [-shaped deflection magnet structure comprises a cuboid mounting chamber, a [-shaped magnet body and a corrugated pipe. The [-shaped magnet body is arranged in the cuboid mounting chamber in a sliding manner; the [-shaped magnet body comprises a magnet return yoke, a magnet upper end plate and a magnet lower end plate which are oppositely arranged are arranged on the side, away from the corrugated pipe, of the magnet return yoke, an upper magnet pole head is attached to the bottom of the magnet upper end plate, a lower magnet pole head is attached to the top of the magnet lower end plate, and main magnet exciting coils are wound around the peripheries of the upper magnet pole head and the lower magnet pole head. According to the petal-shaped accelerator with the [-shaped deflection magnet structure, the [-shaped magnet body can be directly placed in the corresponding cuboid mounting chamber and is extremely easy to fix, the influence of the cavity wall of the acceleration cavity on a magnetic field is reduced, meanwhile, the state of the magnetic field can be adjusted by moving the [-shaped magnet body back and forth and adjusting the current passing through the main magnet exciting coil, and the stability of the accelerator is improved. Compared with the existing various magnets, the efficiency is higher, and the operation is simpler.

Description

TECHNICAL FIELD

[0001] The utility model relates to the civil non -power nuclear technology field, concretely relates to a flower petal shape accelerator with a type deflection magnet structure. BACKGROUND

[0002] The flower petal accelerator is composed of an acceleration cavity, an electron gun, a high-frequency power source and a rotating magnet. The acceleration cavity is a coaxial resonant cavity. After the electron beam from the electron gun enters the acceleration cavity at a proper phase and is accelerated, the high-frequency electric field is reversed during the period when the electron beam passes through the field-free region of the inner cylinder, so that the electron beam still receives the acceleration field when entering the other half of the acceleration cavity. After coming out of the acceleration cavity, the electron beam is turned by the rotating electromagnet outside the cavity. The rotating magnet twists the electron beam out of the acceleration cavity back again, so as to be accelerated again and improve the energy.

[0003] The existing same type accelerator adopts H type deflection magnet. The deflection magnet is limited in movement, and needs a vacuum box. The fixing and adjustment of the vacuum box are inconvenient, and the magnetic field generated by the deflection magnet in the acceleration cavity is affected by the cavity wall, so that the magnetic field generated by the deflection magnet is required to be larger. In addition, there are solenoid magnets and four-pole magnets. The solenoid magnet generates a uniform magnetic field, and the four-pole magnet can generate a magnetic field in different directions to correct the deviation of the electron. The efficiency of the two kinds of magnets is relatively lower than that of the above-mentioned magnets, and it is inconvenient to fix and adjust the magnetic field state. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a type deflection magnet structure and a flower petal shape accelerator with the same, and aims at solving at least one of the technical problems of the prior art. To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A type deflection magnet structure, comprising:

[0006] A cuboid mounting chamber has an opening on one side;

[0007] A type magnet body is slidably arranged in the cuboid mounting chamber;

[0008] A bellows is fixedly connected to the inner wall of the cuboid mounting chamber at one end, and is fixedly connected to the side surface of the type magnet body at the other end.

[0009] As a further scheme of the utility model: the upper magnet pole head and the lower magnet pole head are both fan-shaped structures, and the planar ends of the fan-shaped structures are away from the magnet yoke.

[0010] As a further scheme of the utility model: the planar ends of the upper magnet pole head and the lower magnet pole head are respectively aligned with the end faces of the magnet upper end plate and the magnet lower end plate.

[0011] As a further scheme of the utility model: the planar ends of the upper magnet pole head and the lower magnet pole head are respectively aligned with the end faces of the magnet upper end plate and the magnet lower end plate.

[0012] As a further scheme of the utility model: the outer periphery of the upper magnet pole head and the lower magnet pole head is wound with a main excitation coil, and when current passes through the main excitation coil, a magnetic field can be generated in the middle of the upper magnet pole head and the lower magnet pole head.

[0013] As a further scheme of the utility model: the magnet upper end plate, the magnet lower end plate and the magnet yoke form a type structure.

[0014] As a further scheme of the utility model: the rectangular mounting cavity in the cuboid mounting chamber is provided with one strip-shaped sliding table at each corner, the two sides of the magnet upper end plate are slidably attached to two strip-shaped sliding tables, and the two sides of the magnet lower end plate are slidably attached to the other two strip-shaped sliding tables.

[0015] As a further scheme of the utility model: the bellows is a cylindrical telescopic structure that can be stretched forward and backward along the axial direction.

[0016] The utility model further provides a petal-shaped accelerator, including electron gun, acceleration cavity and high frequency power source, still include any above-mentioned a type deflection magnet structure, the cuboid mounting chamber of the type deflection magnet structure is vertically arranged in the inner wall of the acceleration cavity.

[0017] As a further scheme of the utility model: the acceleration cavity is a half-wavelength coaxial resonant cavity.

[0018] The utility model has the following beneficial effects:

[0019] (1) the type deflection magnet structure provided by the utility model is slidably arranged with the type magnet body in the cuboid mounting chamber, and the position of the magnetic field generated by the type magnet body can be changed by moving the type magnet body forward and backward in the cuboid mounting chamber.

[0020] (2) The utility model discloses a corrugated pipe is arranged between the rectangular parallelepiped installation room and the rectangular parallelepiped installation room inner wall, and the corrugated pipe can be stretched back and forth along the axial direction, and when the rectangular parallelepiped installation room moves back and forth, the vacuum state in the accelerating cavity can be kept.

[0021] (3) The utility model discloses a main excitation coil is wound on the upper magnet pole head and the lower magnet pole head, and when the current passes through the main excitation coil, the magnetic field can be generated in the upper magnet pole head and the lower magnet pole head, and the current of the main excitation coil can be adjusted, and the current size and direction can change the size and direction of the magnetic field generated by the main excitation coil.

[0022] (4) The utility model discloses a rectangular mounting cavity four corners in the rectangular parallelepiped installation room are provided with a strip slide platform respectively, and four strip slide platforms can be arranged, so that the rectangular parallelepiped installation room moves back and forth smoothly, and the main excitation coil can be prevented from being damaged by the friction of the rectangular parallelepiped installation room inner wall, and the service life of the main excitation coil is prolonged.

[0023] (5) The utility model discloses a plurality of rectangular parallelepiped installation rooms are evenly arranged in the accelerating cavity, and the rectangular parallelepiped installation room can be directly placed in the corresponding rectangular parallelepiped installation room, and the rectangular parallelepiped installation room is easy to fix, and the influence of the accelerating cavity wall on the magnetic field is reduced, and the magnetic field state can be adjusted by moving the rectangular parallelepiped installation room back and forth and adjusting the current of the main excitation coil, and compared with the prior art, the efficiency is higher, and the operation is simpler. DRAWINGS

[0024] The utility model will be further described below in combination with the drawings.

[0025] Figure 1 It is a rectangular parallelepiped installation room internal structure schematic diagram in specific embodiment;

[0026] Figure 2 It is a rectangular parallelepiped installation room internal structure schematic diagram in specific embodiment;

[0027] Figure 3 It is a rectangular parallelepiped installation room internal structure schematic diagram in specific embodiment;

[0028] Figure 4 It is a rectangular parallelepiped installation room internal structure schematic diagram in specific embodiment;

[0029] Figure 5 It is a rectangular parallelepiped installation room internal structure schematic diagram in specific embodiment;

[0030] In the figure: 1, cuboid installation room; 11, strip-shaped sliding table; 2, U-shaped magnet body; 21, magnet return yoke; 22, upper magnet end plate; 23, lower magnet end plate; 24, upper magnet pole head; 25, lower magnet pole head; 3, bellows; 4, main excitation coil; 5, electron gun; 6, acceleration cavity; 7, high-frequency power source. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] In the description of the utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, a particular orientation configuration and operation, therefore, it cannot be understood as a limitation on the utility model.

[0033] In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" and the like should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] Please refer to Figure 1 and Figure 2 The utility model first embodiment provides a U-shaped deflection magnet structure, at least including cuboid installation room 1, U-shaped magnet body 2 and bellows 3. One side of cuboid installation room 1 has an opening, U-shaped magnet body 2 is slidably arranged in cuboid installation room 1, U-shaped magnet body 2 can move back and forth in cuboid installation room 1, changes the position of the magnetic field generated by U-shaped magnet body 2. One end of bellows 3 is fixedly connected to the inner wall of cuboid installation room 1, the other end of bellows 3 is fixedly connected to the side surface of U-shaped magnet body 2. In the embodiment, bellows 3 is a cylindrical telescopic structure, bellows 3 can be stretched back and forth along the axial direction, when U-shaped magnet body 2 moves back and forth, the vacuum state inside acceleration cavity 6 can be maintained.

[0035] Please refer to Figure 3As shown in the embodiment, the material of the U-shaped magnet body 2 can be hand-made pure iron, the U-shaped magnet body 2 comprises a magnet yoke 21, the magnet yoke 21 is rectangular, one side of the magnet yoke 21 is fixedly connected with the bellows 3, the side of the magnet yoke 21 away from the bellows 3 is provided with oppositely arranged magnet upper end plates 22 and magnet lower end plates 23, the bottom of the magnet upper end plate 22 is attached with an upper magnet pole head 24, the top of the magnet lower end plate 23 is attached with a lower magnet pole head 25, the upper magnet pole head 24 and the lower magnet pole head 25 are mirror image arranged.

[0036] Further, referring to Figure 3 As shown, the upper magnet pole head 24 and the lower magnet pole head 25 are both of fan-shaped structure, which can be well matched with the electron beam track, and the size of the pole head and the weight of the magnet are reduced. The edge focusing of the electron beam entering and exiting the magnet is realized, and the beam diffusion is reduced. The planar end of the fan-shaped structure is away from the magnet yoke 21. The planar ends of the upper magnet pole head 24 and the lower magnet pole head 25 are respectively aligned with the end faces of the magnet upper end plate 22 and the magnet lower end plate 23. The magnet upper end plate 22, the magnet lower end plate 23 and the magnet yoke 21 form a U-shaped structure. The electron beam can pass between the upper magnet pole head 24 and the lower magnet pole head 25. The U-shaped magnet body 2 belongs to a secondary magnet, and after the main excitation coil 4 is energized, a magnetic field in the vertical direction can be generated between the upper magnet pole head 24 and the lower magnet pole head 25, so as to change the running track of the electron beam between the upper magnet pole head 24 and the lower magnet pole head 25.

[0037] Referring to Figure 1 As shown, four strip-shaped sliding platforms 11 are arranged at four corners of the rectangular mounting cavity in the cuboid mounting chamber 1, the two sides of the magnet upper end plate 22 are slidably attached with two strip-shaped sliding platforms 11, and the two sides of the magnet lower end plate 23 are slidably attached with the other two strip-shaped sliding platforms 11. By arranging the four strip-shaped sliding platforms 11, the U-shaped magnet body 2 can move smoothly in the front and back directions in the cuboid mounting chamber 1, and the main excitation coil 4 can be prevented from being damaged by friction with the inner wall of the cuboid mounting chamber 1, so as to prolong the service life of the main excitation coil 4.

[0038] The second embodiment of the utility model provides a petal-shaped accelerator, including electron gun 5, acceleration cavity 6 and high frequency power source 7, still include multiple above-mentioned implementation example one provides a U-shaped deflection magnet structure, the multiple cuboid mounting chamber 1 of multiple U-shaped deflection magnet structures is evenly arranged on the inner wall of acceleration cavity 6, and acceleration cavity 6 is half-wave length coaxial resonant cavity, and the bellows 3 is tightly connected with the inner wall of acceleration cavity 6 without gap.

[0039] When the petal-shaped accelerator works, the electron beam is emitted by the electron gun 5, under the action of the high-frequency power source 7, the electron beam is accelerated and the energy is increased, when running to the edge of the acceleration cavity 6, the electron beam is affected by the magnetic field of the Z-shaped magnet body 2, is folded back to re-enter the acceleration cavity 6, and then is accelerated again, and the energy is continuously increased.

[0040] If it is necessary to change the running track of the electron beam, the running track of the electron beam can be changed by adjusting the current intensity flowing through the main excitation coil 4 and the front and back positions of each Z-shaped magnet body 2 to change the magnetic field intensity.

[0041] The Z-shaped deflection magnet structure of the petal structure is based on the special field of the petal-shaped accelerator, and can help to explain the core idea of the utility model. The Z-shaped deflection magnet structure of the utility model can also be applied to other types of accelerators, and can be used in electron accelerators, proton accelerators, cyclotron accelerators or ion accelerators to change the running track of the electron beam without changing the energy of the electron beam.

[0042] In summary, the Z-shaped deflection magnet structure introduced in the utility model can directly place the Z-shaped magnet body 2 in the cuboid mounting chamber 1 of the inner wall of the acceleration cavity 6, is easy to fix, and reduces the influence of the cavity wall of the acceleration cavity 6 on the magnetic field, and at the same time, the magnetic field state can be adjusted by moving the Z-shaped magnet body 2 forward and backward and adjusting the current flowing through the main excitation coil 4, compared with the existing various magnets, the efficiency is higher, and the operation is simpler.

[0043] The preferred embodiments of the utility model are described in detail above, and cannot be considered as being used for limiting the implementation range of the utility model. Any equivalent changes and improvements made according to the application range of the utility model should still belong to the patent coverage range of the utility model.

Claims

1. A structure of a C-type deflection magnet, characterized by comprising: Include: Rectangular cuboid installation room (1), one side of the rectangular cuboid installation room (1) has an opening; The U-shaped magnet body (2) is slidably arranged in the rectangular cuboid installation room (1); The bellows (3) is fixedly connected to the inner wall of the rectangular cuboid installation room (1), and the other end of the bellows (3) is fixedly connected to the side of the U-shaped magnet body (2).

2. The structure of a C-type deflection magnet according to claim 1, characterized in that: The U-shaped magnet body (2) includes a magnet yoke (21), one side of the magnet yoke (21) is fixedly connected with the bellows (3), the other side of the magnet yoke (21) away from the bellows (3) has oppositely arranged magnet upper end plate (22) and magnet lower end plate (23), the bottom of the magnet upper end plate (22) is attached with an upper magnet pole head (24), the top of the magnet lower end plate (23) is attached with a lower magnet pole head (25), the upper magnet pole head (24) and the lower magnet pole head (25) are mirror image arranged.

3. The structure of a C-type deflection magnet according to claim 2, characterized in that: The upper magnet pole head (24) and the lower magnet pole head (25) are both fan-shaped structures, and the planar end of the fan-shaped structure is away from the magnet yoke (21).

4. The structure of a C-type deflection magnet according to claim 3, characterized in that: The planar end of the upper magnet pole head (24) and the lower magnet pole head (25) is respectively aligned with the end face of the magnet upper end plate (22) and the magnet lower end plate (23).

5. A C-type deflection yoke structure according to claim 4, characterized in that: The outer periphery of the upper magnet pole head (24) and the lower magnet pole head (25) is wound with a main excitation coil (4), and when the main excitation coil (4) has current passing through, a magnetic field can be generated in the middle of the upper magnet pole head (24) and the lower magnet pole head (25).

6. The structure of a C-type deflection magnet according to claim 2, wherein: The magnet upper end plate (22), magnet lower end plate (23) and magnet yoke (21) form a U-shaped structure.

7. The structure of a C-type deflection magnet according to claim 6, characterized in that: The rectangular mounting cavity in the rectangular cuboid installation room (1) is provided with one strip-shaped sliding table (11) at each corner, the two sides of the magnet upper end plate (22) are slidably attached with two strip-shaped sliding tables (11), and the two sides of the magnet lower end plate (23) are slidably attached with another two strip-shaped sliding tables (11).

8. The structure of a C-type deflection magnet according to claim 1, wherein: The bellows (3) is a cylindrical telescopic structure that can be stretched forward and backward along the axial direction.

9. A petal accelerator comprising an electron gun (5), an acceleration chamber (6) and a high-frequency power source (7), characterized in that: Also includes a U-shaped deflection magnet structure according to any one of claims 1-8, the rectangular cuboid installation room (1) of the U-shaped deflection magnet structure is vertically arranged in the inner wall of the accelerating cavity (6).

10. A petal accelerator according to claim 9, characterized in that The accelerating cavity (6) is a half-wavelength coaxial resonant cavity.

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