Pepper hole device for measuring particle beam parameters of accelerator

Abstract

The utility model relates to the technical field of accelerator particle beam application, in particular to a pepper hole device for measuring particle beam parameters of an accelerator. According to the technical scheme, the device comprises a pepper plate hole structure, a front shading shell, a rear shading shell, a patch structure, a bottom sealing structure and a fluorescent screen structure, and the fluorescent screen structure and a camera for shooting are fixedly installed; the pepper plate hole structures are distributed at four groups of rectangular outer ends according to 90 degrees, a square groove for correspondingly installing the fluorescent screen structure is formed in the front shading shell, and a plurality of groups of rectangular protrusions are fixedly connected to the positions, corresponding to the rectangular outer ends, of the upper surface of the front shading shell. The four corners of the square groove are fixedly connected with supporting blocks used for bearing and clamping the fluorescent screen structure. The low-energy beam transmission section debugging and optimizing device is small in size, can be used for debugging and optimizing the low-energy beam transmission section in the field of accelerators, and provides a good technical basis for the field.

Description

Technical Field

[0001] This utility model relates to the field of accelerator particle beam application technology, and in particular to a pepper hole device for measuring accelerator particle beam parameters. Background Technology

[0002] In particle accelerators, beam parameters are crucial, directly affecting the operational stability of the accelerator system. During the beam extraction and propagation stages, various factors such as collisions, electrical, and magnetic interference can cause beam deflection and divergence. Therefore, it is necessary to measure and record the particle beam quality offline to optimize the beam extraction and propagation sections, ensuring that the beam quality parameters meet the requirements of the next acceleration structure or accelerator target. To address the beam deflection optimization problem, this application proposes a pepper-hole device capable of capturing and recording the trajectory of the beam passing through a pepper-hole plate and striking a fluorescent screen to measure accelerator particle beam parameters. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a pepper aperture device for measuring accelerator particle beam parameters, which can capture and record the trajectory of the beam passing through the pepper aperture plate and hitting the fluorescent screen.

[0004] The technical solution of this utility model is: a pepper hole device for measuring particle beam parameters of an accelerator, comprising a pepper plate hole structure, a front light-shielding shell, a rear light-shielding shell, a patch structure, a bottom sealing structure, and a fluorescent screen structure, wherein the fluorescent screen structure is fixedly installed with a camera for shooting;

[0005] The pepper plate hole structure has four sets of rectangular outer ends distributed at 90°. The interior of the front light shield housing has a square groove for the corresponding installation of the fluorescent screen structure. Multiple sets of rectangular protrusions are fixedly connected to the upper surface of the front light shield housing at the position corresponding to the rectangular outer ends. Support blocks for mounting the fluorescent screen structure are fixedly connected to the four corners of the square groove.

[0006] The rear light-shielding housing has a first cutting section and a second cutting section, and the front light-shielding housing is installed at the position corresponding to the first cutting section.

[0007] The bottom sealing structure is fixedly assembled with the lower surface of the rear light-shielding shell.

[0008] Optionally, each of the multiple sets of rectangles has a first mounting hole on its outer end, and the rectangle protrusion has a second mounting hole corresponding to the first mounting hole. The first mounting hole and the second mounting hole are assembled together by M3 bolts.

[0009] Optionally, the fluorescent screen structure has the same dimensions as the square groove, and a fourth mounting hole is provided at the corresponding position of the support block on the front light-shielding housing. A patch structure that is connected to the fourth mounting hole to fix the position of the fluorescent screen structure in conjunction with the support block is connected to the fourth mounting hole.

[0010] Optionally, both the fourth mounting hole and the second mounting hole are M3 threaded holes.

[0011] Optionally, four sets of through holes for venting are provided at 90° intervals around the second section of the cut.

[0012] Optionally, two sets of fifth mounting holes are provided at the contact connection plane between the first cutting section and the second cutting section, and two sets of third mounting holes are also provided on the front light shield housing. The third mounting holes are correspondingly set with the fifth mounting holes and are assembled and connected by bolts.

[0013] Optionally, the bottom sealing structure has multiple sets of M8 threaded holes arranged in a circumferential array, and the rear light-shielding housing is welded to the bottom sealing structure.

[0014] Optionally, the bottom sealing structure has mounting holes for mounting the camera.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] This invention uses a camera mounted at the bottom of a bottom-sealed structure to capture and record the trajectory of the beam passing through the pepper aperture plate and hitting the fluorescent screen. This allows for the evaluation of parameters such as the envelope, divergence angle, lateral distribution, and lateral emissivity of the particle beam. Based on this evaluation, the beam extraction and transmission sections are optimized, and the beam extraction section is further optimized until a beam trajectory that meets the requirements is obtained.

[0017] This utility model combines the setting of support block and patch structure to realize the clamping method of lower support and upper pressure to fix the fluorescent screen structure, and additionally opens a groove on one side of the support block located outside the square groove to facilitate installation and disassembly.

[0018] This invention is small in size and can be used for debugging and optimization of low-energy beam transmission sections in the field of accelerators, providing a good technical foundation for this field. Attached Figure Description

[0019] Figure 1 An exploded structural diagram of this utility model is provided;

[0020] Figure 2 A schematic diagram of the rear light-shielding shell in this utility model is provided;

[0021] Figure 3 A schematic diagram of the front light-shielding shell in this utility model is provided.

[0022] Figure label:

[0023] 1. Pepper plate hole structure; 11. Rectangular outer end; 110. First mounting hole;

[0024] 2. Front sunshade housing; 21. Square groove; 22. Rectangular protrusion; 220. Second mounting hole; 23. Support block; 24. Third mounting hole; 25. Fourth mounting hole;

[0025] 3. Rear sunshade housing; 31. First section cut; 32. Second section cut; 33. Fifth mounting hole; 34. Through hole;

[0026] 4. Patch panel structure;

[0027] 5. Bottom sealing structure; 51. Mounting hole groove;

[0028] 6. Fluorescent screen structure. Detailed Implementation

[0029] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0030] The components of the embodiments of this disclosure typically described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of embodiments of this disclosure provided in the drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure.

[0031] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0032] In the description of this disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0033] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0034] Example

[0035] like Figure 1-3 As shown, this utility model proposes a pepper-hole device for measuring accelerator particle beam parameters, comprising a pepper-plate hole structure 1, a front light-shielding shell 2, a rear light-shielding shell 3, a patch structure 4, a bottom sealing structure 5, and a fluorescent screen structure 6. The fluorescent screen structure 6 is fixedly mounted to a camera for imaging. The pepper-plate hole structure 1 has a small, square-shaped hole with a diameter of 0.5 mm, used for beam transmission. Light is shielded between the camera below the pepper-plate hole structure 1 and the fluorescent screen structure 6 by the rear light-shielding shell 3 and the front light-shielding shell 2. Light is also shielded between the fluorescent screen above the device and the pepper-plate hole by a fixedly connected light-shielding baffle, thus eliminating external light interference and enabling the recording of the beam's trajectory.

[0036] The pepper plate hole structure 1 has four sets of rectangular outer ends 11 distributed at 90°. The interior of the front light-shielding housing 2 has square grooves 21 for the corresponding installation of the fluorescent screen structure 6. The upper surface of the front light-shielding housing 2 is fixedly connected to multiple sets of rectangular protrusions 22 at the positions corresponding to the rectangular outer ends 11. The thickness of the rectangular protrusions 22 is 10-12mm, which is the distance from the pepper plate hole to the fluorescent screen. Multiple sets of rectangular outer ends 11 are provided with first mounting holes 110, and rectangular protrusions 22 are provided with second mounting holes 220 corresponding to the first mounting holes 110. The first mounting holes 110 and the second mounting holes 220 are assembled with M3 bolts. Support blocks 23 for mounting the fluorescent screen structure 6 are fixedly connected at the four corners of the square groove 21. The fluorescent screen structure 6 is the same size as the square groove 21. A fourth mounting hole 25 is provided at the corresponding position of the support block 23 on the front light shield 2. The fourth mounting hole 25 and the second mounting hole 220 are both M3 threaded holes. A patch structure 4 is connected to the fourth mounting hole 25 to fix the position of the fluorescent screen structure 6 with the support block 23.

[0037] like Figure 2As shown, the rear light-shielding housing 3 has a first cutting section 31 and a second cutting section 32. Two sets of fifth mounting holes 33 are provided at the contact plane between the first and second cutting sections 31 and 32. The front light-shielding housing 2 also has two sets of third mounting holes 24. The third mounting holes 24 correspond to the fifth mounting holes 33 and are connected by bolts. Four sets of through holes 34 for exhaust are distributed at 90° intervals along the circumference of the second cutting section 32 to ensure that the vacuum requirements are met when installed inside the accelerator. In this embodiment, the through holes 34 are 9mm in size. The front light-shielding housing 2 is installed at the position corresponding to the first cutting section 31.

[0038] like Figure 3 As shown, the bottom sealing structure 5 is fixedly assembled with the lower surface of the rear light shield housing 3; the bottom sealing structure 5 has multiple sets of M8 threaded holes arranged in a circumferential array, the rear light shield housing 3 is welded to the bottom sealing structure 5, the bottom sealing structure 5 has a 4mm deep mounting groove at concentric circles with radii of 42mm and 46mm for sealing, and the bottom sealing structure 5 has a mounting hole slot 51 for camera mounting.

[0039] In this embodiment, the camera is installed at the corresponding position of the mounting slot 51. The installation of the two is achieved by welding the rear light shield housing 3 and the bottom sealing structure 5. The front light shield housing 2 and the rear light shield housing 3 are assembled by snapping the front light shield housing 2 into the inside of the first section cutting 31 and rotating the corresponding bolts of the third mounting hole 24 and the fifth mounting hole 33. The fluorescent screen structure 6 is placed above the support block 23 and is pressed down by the patch structure 4 to achieve the installation method of lower support and upper pressure. The pepper plate hole structure 1 is installed by placing the rectangular outer end 11 corresponding to the rectangular protrusion 22 and assembling the two by bolts through the first mounting hole 110 and the second mounting hole 220.

[0040] In this embodiment, a camera mounted at the bottom captures and records the trajectory of the beam passing through the perforated plate of the pepper and hitting the fluorescent screen. The relevant data is then used to optimize the design of the beam extraction section until a beam trajectory that meets the requirements is obtained.

[0041] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A pepper-pot device for measuring parameters of a particle beam of an accelerator, characterized in that: The utility model relates to a camera fixing device for shooting, which comprises a pepper plate hole structure (1), a front light shielding shell (2), a rear light shielding shell (3), a patch structure (4), a bottom sealing structure (5) and a fluorescent screen structure (6), wherein the fluorescent screen structure (6) is fixedly installed with a camera for shooting. The pepper plate hole structure (1) is provided with four groups of rectangular outer ends (11) distributed at 90 degrees, the front light shielding shell (2) is provided with a square groove (21) corresponding to the installation of the fluorescent screen structure (6) in the inside, a plurality of rectangular protrusions (22) are fixedly connected to the upper surface of the front light shielding shell (2) at positions corresponding to the rectangular outer ends (11), and support blocks (23) for bearing and clamping the fluorescent screen structure (6) are fixedly connected to the four corner positions of the square groove (21). The rear light shielding shell (3) is provided with a first cutting section (31) and a second cutting section (32) in the inside, and the front light shielding shell (2) is installed at a position corresponding to the first cutting section (31). The bottom sealing structure (5) is fixedly assembled with the lower surface of the rear light shielding shell (3).

2. A pepper-pot device for measuring a particle beam current parameter of an accelerator according to claim 1, characterized in that A first mounting hole (110) is formed in each of the plurality of rectangular outer ends (11), a second mounting hole (220) corresponding to the first mounting hole (110) is formed in the rectangular protrusion (22), and the first mounting hole (110) and the second mounting hole (220) are correspondingly assembled through an M3 bolt.

3. A pepper-pot device for measuring a particle beam current parameter of an accelerator according to claim 1, characterized in that The fluorescent screen structure (6) has the same size as the square groove (21), a fourth mounting hole (25) is formed in the corresponding position of the support block (23) and located on the front light shielding shell (2), and the fourth mounting hole (25) is connected with the patch structure (4) for fixing and clamping the position of the fluorescent screen structure (6) in combination with the support block (23).

4. A pepper-pot device for measuring a particle beam current parameter of an accelerator according to claim 3, characterized in that The fourth mounting hole (25) and the second mounting hole (220) are both M3 threaded holes.

5. A pepper-pot device for measuring a particle beam current parameter of an accelerator according to claim 1, characterized in that Four groups of through holes (34) for exhaust are formed at positions distributed at intervals of 90 degrees along the circumference of the second cutting section (32).

6. A pepper-pot device for measuring a particle beam current parameter of an accelerator according to claim 1, characterized in that Two groups of fifth mounting holes (33) are formed in the contact connection planes of the first cutting section (31) and the second cutting section (32), and two groups of third mounting holes (24) are further formed in the front light shielding shell (2), the third mounting holes (24) and the fifth mounting holes (33) are correspondingly arranged and assembled and connected through bolts.

7. A pepper-pot device for measuring parameters of a particle beam of an accelerator according to claim 1, characterized in that A plurality of M8 threaded holes are formed in the bottom sealing structure (5) in an array along the circumference, and the rear light shielding shell (3) is welded to the bottom sealing structure (5).

8. A pepper-pot device for measuring parameters of a particle beam of an accelerator according to claim 1, characterized in that An installation hole groove (51) for the installation of a camera is formed in the bottom sealing structure (5).

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