Accelerator vacuum box structure

Abstract

An accelerator vacuum box structure comprises a cover plate and a plurality of magnet yokes which are located above the cover plate and annularly distributed on the periphery of a magnet coil, a vacuum chamber is arranged in the magnet coil, and more than four lead-out holes symmetrically distributed in the side wall are formed in the side wall of the vacuum chamber. And a target material clamp is arranged near each lead-out hole in the vacuum chamber. The accelerator vacuum box structure is provided with a plurality of leading-out holes for leading out particles, each leading-out hole is provided with an adjustable target material clamp, the radius can be adjusted by adjusting the position of a carbon film and the size of the clamp, and then output of particles with different energies is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of accelerators and relates to an artificial intelligence device, in particular to an accelerator vacuum box structure. Background Art

[0002] A particle accelerator is a device that uses artificial methods to generate high-speed charged particles. The structure of a particle accelerator generally includes a vacuum box with a certain form of accelerating electric field. In order to accelerate the particles without being scattered by molecules in the air, particle acceleration is completed in a vacuum box with an extremely high degree of vacuum.

[0003] The common cyclotron vacuum box structure has one or two fixed extractor sleeve structures. After the proton is accelerated to a certain energy, when it passes through the carbon film on the extractor sleeve, the two electrons in the proton are stripped off. The stripped particles are positively charged and are subjected to reverse force under the operation of the magnetic field. They enter the target system and bombard the relevant target material. The existing accelerator vacuum box has few extraction positions and a fixed acceleration radius, which limits the use of the accelerator. Utility Model Content

[0004] In order to overcome the technical defects in the prior art, the utility model discloses an accelerator vacuum box structure.

[0005] The accelerator vacuum box structure of the utility model comprises a cover plate and a plurality of annular magnetic yokes located above the cover plate and distributed on the periphery of a magnet coil; a vacuum chamber is arranged inside the magnet coil; a side wall of the vacuum chamber is provided with more than four lead-out holes symmetrically distributed on the side wall; a target material clamp is arranged near each lead-out hole in the vacuum chamber.

[0006] Preferably, there are four magnetic yokes, which are distributed on two mutually perpendicular diameter end points of the magnet coil.

[0007] Preferably, there are eight lead-out holes, which are symmetrically distributed in four groups.

[0008] Preferably, the target material fixture comprises a rotating shaft fixed on the inner wall of the vacuum chamber and a clamp arranged on the rotating shaft.

[0009] Preferably, the connection point between the clamp and the rotating shaft is movably connected.

[0010] The accelerator vacuum box structure of the utility model is provided with a plurality of lead-out holes for particle lead-out, and an adjustable clamp is provided at each lead-out hole. The radius can be adjusted by adjusting the carbon film position and the clamp size, thereby achieving particle output of different energies. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of a specific implementation of the accelerator vacuum box structure of the utility model;

[0012] Figure 2 This is a schematic diagram of a specific implementation of the adjustable target fixture of the utility model;

[0013] The reference numerals in the figure are: 1-clamp, 2-rotating shaft, 3-yoke, 4-vacuum chamber, 5-magnet coil, 6-cover plate, 7-lead-out hole. Implementation

[0014] The following is combined with Figures 1 to 2 , the specific implementation methods of the utility model are further described in detail.

[0015] The accelerator vacuum box structure of the utility model includes a cover plate 6 and a plurality of magnetic yokes 3 located above the cover plate and distributed in an annular manner on the periphery of a magnetic coil 5. A vacuum chamber 4 is arranged inside the magnetic coil. The side wall of the vacuum chamber is provided with more than four lead-out holes 7 symmetrically distributed on the side wall. A target system is arranged near each of the lead-out holes in the vacuum chamber.

[0016] When the accelerator is working, the magnetic coil 5 is energized to provide excitation power. The cover plate 6 and the magnetic yoke 3 distributed around the periphery of the magnetic coil are both made of materials with high magnetic permeability, such as pure iron. The cover plate and the magnetic yoke provide a hysteresis loop for the magnetic field generated by the magnetic coil, thereby generating a magnetic field in the vacuum chamber that can accelerate the particle cyclotron.

[0017] Figure 1 In the specific embodiment shown, the vacuum chamber is circular, and the magnetic yokes 3 are usually provided in four numbers, distributed at the two mutually perpendicular diameter ends of the magnetic coil. The extraction holes can be provided in four groups of eight, two in each group, and correspondingly there are two rotating shafts and clamps. Each time the particles are stripped of electrons, they are reversely extracted under the action of the magnetic field force.

[0018] After the vacuum chamber is evacuated, the accelerated particles are accelerated in a cyclotron in the cavity. A clamp is set near the extraction hole, and a carbon film is installed on the clamp. When the particles run to the radius of the clamp, the carbon film on the clamp strips off the electrons of the negative hydrogen ions. The stripped particles are converted from negative to positive, and are subjected to the reverse Lorentz magnetic force in the electromagnetic field and are extracted from the corresponding extraction hole. The energy of the extracted particles is related to the distance from the clamp to the center point. The position of the clamp is different, and the corresponding distance is also different, so as to obtain a particle beam with the required energy.

[0019] like Figure 2A specific implementation of the target fixture is shown in the figure, and the carbon film fixture includes a rotating shaft fixed on the cover plate 6 and a clamp on the rotating shaft. The clamp 1 and the rotating shaft 2 are fixed by screws, and the rotating shaft 2 can rotate. When the rotating shaft rotates, the clamp also rotates accordingly. The carbon film is clamped on the clamp. After the clamp rotates, the radius from the clamping point of the carbon film to the center of the vacuum chamber changes, thereby realizing the change of the distance from the carbon film to the center of the circle, and the energy intensity of the particle beam after the extraction changes with the radius. The energy intensity of the particles extracted at different radii is different, thereby achieving energy adjustment.

[0020] In a specific embodiment, the rotating shaft can be driven to rotate by a servo motor disposed on the cover plate 6 , and the servo motor can be controlled by a control system to achieve precise adjustment of the radius of the clamped target.

[0021] The accelerator vacuum box structure of the utility model is provided with a plurality of extraction holes for particle extraction, and an adjustable carbon film clamp is provided at each extraction hole. The radius can be adjusted by adjusting the carbon film position and the clamp size, thereby achieving particle output of different energies.

[0022] The foregoing describes various preferred embodiments of the utility model. If the preferred implementation modes in various preferred embodiments are not obviously self-contradictory or are based on a certain preferred implementation mode, various preferred implementation modes can be arbitrarily superimposed and used in combination. The embodiments and specific parameters in the embodiments are only for clearly describing the utility model verification process of the utility model owner, and are not used to limit the patent protection scope of the utility model. The patent protection scope of the utility model is still based on its claims. All equivalent structural changes made using the description and drawings of the utility model should be included in the protection scope of the utility model.

Claims

1. An accelerator vacuum box structure, characterized in that: The invention comprises a cover plate (6) and a plurality of annular magnetic yokes (3) located above the cover plate and distributed on the periphery of a magnetic coil (5); a vacuum chamber (4) is arranged inside the magnetic coil (5); a side wall of the vacuum chamber (4) is provided with more than four lead-out holes (7) symmetrically distributed on the side wall; and a target material fixture is arranged near each lead-out hole (7) in the vacuum chamber (4).

2. The accelerator vacuum box structure according to claim 1, characterized in that: There are four magnetic yokes (3) distributed on two mutually perpendicular diameter end points of the magnetic coil (5).

3. The accelerator vacuum box structure according to claim 1, characterized in that: There are eight outlet holes (7), which are divided into four groups and are symmetrically distributed.

4. The accelerator vacuum box structure according to claim 1, characterized in that: The target material fixture comprises a rotating shaft (2) fixed on the inner wall of the vacuum chamber and a clamp (1) arranged on the rotating shaft.

5. The accelerator vacuum box structure according to claim 4, characterized in that: The connection point between the clamp (1) and the rotating shaft (2) is movably connected.

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