Beam pipe structure capable of reducing particle extraction energy consumption

Abstract

The utility model belongs to the technical field of beam tubes, and particularly relates to a beam tube structure capable of reducing particle extraction energy consumption, the beam tube comprises a beryllium tube, and a cooling loop amplification cavity, a short aluminum tube and an extension tube which are radially symmetrical along the left end and the right end of the beryllium tube and are sequentially mounted, and the radial section of the extension tube is in a gradually changing runway shape; the beam pipe structure is characterized in that the beam pipe is installed in a manner that the left end and the right end of a beryllium pipe are each provided with a cooling loop amplification cavity, the other ends of the two cooling loop amplification cavities are each provided with a short aluminum pipe, and the other ends of the two short aluminum pipes are each provided with an extension pipe. The epitaxial aluminum tube is of a gradually-changed runway type structure, particles can reach the LumiCal detector only by penetrating out of the thickness of the single-layer aluminum tube, the amount of penetrating-out substances is smaller, consumed energy can be reduced when the particles are led out, and the physical detection precision is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of particle beam tubes, and in particular relates to a beam tube structure capable of reducing the energy consumption of particle extraction. Background Art

[0002] The beam tube is located at the center of the CEPC (Circular Electron Positron Collider) spectrometer, docked with the accelerator vacuum tube at the front and back, with an ultra-high vacuum environment inside. The center of the positron-electron collision is located at the center of the beam tube. The beam tube consists of a central beryllium tube and an epitaxial aluminum tube. After the positrons and electrons collide in the beam tube, the particles need to pass through three layers of matter, namely the inner aluminum tube, water flow and outer aluminum tube to reach the LumiCal detector on the upper side of the outer aluminum tube. This will seriously hinder the particles from passing through the beam tube, greatly reducing the kinetic energy of the particles, which is not conducive to physical detection research. Summary of the invention

[0003] The purpose of the present invention is to provide a beam tube structure that can reduce the energy consumption of particle extraction, aiming to solve the problem in the prior art that the epitaxial tube will seriously hinder the particles from passing through the beam tube, greatly reduce the kinetic energy of the particles, and be unfavorable for physical detection research.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a beam tube structure capable of reducing the energy consumption of particle extraction, the beam tube comprising a beryllium tube and a cooling circuit amplifying cavity, a short aluminum tube and an epitaxial tube which are radially symmetrically and sequentially installed along the left and right ends of the beryllium tube, respectively, wherein the radial cross-section of the epitaxial tube is in the shape of a gradually changing runway; the installation order of the beam tube is as follows: the left and right ends of the beryllium tube are respectively installed with cooling circuit amplifying cavities, the other ends of the two cooling circuit amplifying cavities are respectively installed with short aluminum tubes, and the other ends of the two short aluminum tubes are respectively installed with epitaxial tubes.

[0005] In order to make the beam tube structure that can reduce the energy consumption of particle extraction achieve the effect of facilitating the installation of BPM, as a preferred embodiment of the present invention, the epitaxial tube includes an inner aluminum tube and an outer aluminum tube, one end of the inner aluminum tube is fixedly connected to an end flange, the outer surface of the end flange is provided with a mounting hole, and the BPM is installed inside the mounting hole.

[0006] In order to facilitate the fixing of beryllium sheets in the beam tube structure capable of reducing the energy consumption of particle extraction, as a preferred embodiment of the present invention, a sheet groove is provided inside the inner aluminum tube, and a beryllium sheet is embedded and installed on the inner wall of the sheet groove.

[0007] In order to enable the beam tube structure that can reduce the energy consumption of particle extraction to protect the inner aluminum tube, as a preferred embodiment of the present invention, the outer aluminum tube includes a right half outer aluminum tube and a left half outer aluminum tube, and the right half outer aluminum tube and the left half outer aluminum tube are respectively axially installed on both sides of the outer surface of the inner aluminum tube to form a semi-enclosed structure.

[0008] In order to make the beam tube structure that can reduce the energy consumption of particle extraction achieve the effect of facilitating the connection between the beryllium tube and the cooling loop amplification cavity, as a preferred embodiment of the present invention, the number of the beryllium tubes is two, and the two beryllium tubes are symmetrically installed at both ends of the cooling loop amplification cavity, and the beryllium tubes include an inner beryllium tube and an outer beryllium tube, and the inner beryllium tube-like sleeve structure is installed inside the outer beryllium tube.

[0009] In order to enable the beam tube structure capable of reducing the energy consumption of particle extraction to achieve the effect of fixing one end of the epitaxial tube, as a preferred embodiment of the present invention, the inner wall of the end flange is fixedly connected with an outer aluminum tube flange.

[0010] In order to enable the beam tube structure capable of reducing the energy consumption of particle extraction to achieve the effect of limiting the installation position of the beryllium sheet, as a preferred embodiment of the present invention, the number of sheet slots opened inside each of the inner aluminum tubes is two.

[0011] In order to enable the beam tube structure capable of reducing the energy consumption of particle extraction to facilitate particles to pass through the tube from both top and bottom at the same time, as a preferred embodiment of the present invention, the installation positions of the two beryllium sheets on the same inner aluminum tube are symmetrical to each other.

[0012] In order to enable the beam tube structure capable of reducing the energy consumption of particle extraction to achieve the effect of installing a right half outer aluminum tube and a left half outer aluminum tube, as a preferred embodiment of the present invention, an outer aluminum tube groove is provided on the outer surface of each inner aluminum tube.

[0013] In order to enable the beam tube structure capable of reducing the energy consumption of particle extraction to achieve the effect of fixing the right half outer aluminum tube and the left half outer aluminum tube, as a preferred embodiment of the present invention, the number of the outer aluminum tube grooves on each of the inner aluminum tubes is four.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] First of all, the technical solution of the present invention is a beam tube structure that can reduce the energy consumption of particle extraction. The epitaxial aluminum tube is a gradient runway-shaped structure. The particles only need to pass through the thickness of a single-layer aluminum tube to reach the LumiCal detector. The amount of material passing through is smaller, which is beneficial to reduce energy consumption when extracting particles and improves the accuracy of physical detection. The installation order of the beam tube structure of the present application is that cooling circuit amplification cavities are respectively installed at the left and right ends of the beryllium tube, and short aluminum tubes are respectively installed at the other ends of the two cooling circuit amplification cavities, and epitaxial tubes are respectively installed at the other ends of the two short aluminum tubes. The structure is simple and has strong producibility and installation properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the axonometric structure of the present invention when viewed from above;

[0019] Figure 3 It is a schematic diagram of the axonometric structure of the central beryllium tube in the present invention;

[0020] Figure 4 It is a schematic diagram of the explosion structure of the central beryllium tube in the present invention;

[0021] Figure 5 It is a schematic diagram of the axonometric structure of the epitaxial aluminum tube in the present invention;

[0022] Figure 6 It is a schematic diagram of the explosion structure of the epitaxial aluminum tube in the present invention;

[0023] Figure 7 It is a schematic diagram of the cross-sectional structure of the present invention in the axial direction;

[0024] Figure 8 It is a radial cross-section of a conical epitaxial tube;

[0025] Fig. 9 It is a radial cross-sectional view of the racetrack-shaped epitaxial tube of the present invention.

[0026] In the figure: 1. Inner beryllium tube; 2. Outer beryllium tube; 3. Cooling circuit enlargement chamber; 4. Short aluminum tube; 5. End flange; 6. BPM; 7. Mounting hole; 8. Outer aluminum tube flange; 9. Beryllium sheet; 10. Left half of outer aluminum tube; 11. Right half of outer aluminum tube; 12. Inner aluminum tube; 13. Sheet groove; 14. Outer aluminum tube groove; 15. Epitaxial tube. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be particularly noted that the axial direction of the present invention refers to the direction parallel to the beam tube, and the radial direction refers to the direction perpendicular to the axial direction.

[0028] See also Figure 1-9The present invention provides the following technical solutions: a beam tube structure capable of reducing the energy consumption of particle extraction, the beam tube comprising a beryllium tube and a cooling circuit amplifying cavity 3, a short aluminum tube 4 and an epitaxial tube 15 which are radially symmetrically and sequentially installed along the left and right ends of the beryllium tube, respectively, and the radial cross section of the epitaxial tube 15 is in a gradually changing runway shape; the installation sequence of the beam tube is that the left and right ends of the beryllium tube are respectively installed with the cooling circuit amplifying cavity 3, the other ends of the two cooling circuit amplifying cavities 3 are respectively installed with the short aluminum tubes 4, and the other ends of the two short aluminum tubes 4 are respectively installed with the epitaxial tubes 15.

[0029] In a specific embodiment of the present invention, the beam tube is assembled from a central beryllium tube and two epitaxial aluminum tubes by arranging an end flange 5, a beryllium sheet 9, a left half outer aluminum tube 10, a right half outer aluminum tube 11 and an inner aluminum tube 12. The two epitaxial aluminum tubes are fixed at both ends of the central beryllium tube, wherein the central beryllium tube is composed of an inner beryllium tube 1, an outer beryllium tube 2, two cooling circuit amplification chambers 3 and two short aluminum tubes 4. The medium in the cooling circuit of the cooling circuit amplification chamber 3 in this embodiment can be oil, water or other liquid cooling media, and the epitaxial aluminum tube is composed of an end flange 5, BPM6, an outer aluminum tube flange 8, a beryllium sheet 9, a left half outer aluminum tube 10, a right half outer aluminum tube 11 and an inner aluminum tube 12. The epitaxial aluminum tube is a gradually changing runway-type structure. Particles only need to pass through the thickness of a single-layer aluminum tube to reach the LumiCal detector, and the amount of material passing through is smaller. The inner aluminum tube 12 has a smaller amount of material and a higher precision in physical detection. Beryllium sheets 9 are embedded in the upper and lower surfaces of the inner aluminum tube 12. The density of beryllium is lower than that of aluminum, and the amount of material is smaller. Therefore, the detection precision of particles passing through the beryllium sheets 9 is also higher. The racetrack-type pipeline can reduce the aperture in the vertical direction, which can reduce the cavity structure in the vertical direction, thereby reducing high-order mode heat. Therefore, after the positrons and electrons collide in the beam tube, they escape from the inner aluminum tube 12 or the beryllium sheets 9. Since the amount of material to be passed through is small, the particles can more easily pass through and reach the LumiCal detector fixed on the upper side of the inner aluminum tube 12, thereby meeting the physical requirements. Moreover, due to the structure, the particles only need to pass through one layer of aluminum tube or beryllium sheet 9 to reach the LumiCal detector. Compared with the previous need to pass through two layers of aluminum tubes and a layer of water flow, the amount of material passed through is smaller, and the precision of physical detection is also more accurate.

[0030] Specifically, the epitaxial tube 15 includes an inner aluminum tube 12 and an outer aluminum tube, one end of the inner aluminum tube 12 is fixedly connected to an end flange 5, the outer surface of the end flange 5 is provided with a mounting hole 7, and a BPM 6 is installed inside the mounting hole 7. The Chinese name of BPM: Beam Position monitoring. The role of BPM in the technical solution of this application is to feedback signals and control the running track of the beam in the vacuum tube. More specifically, BPM can provide real-time feedback on the signal, and then control the running track of the beam in the vacuum tube in real time according to the feedback signal.

[0031] In this embodiment: the installation of BPM6 is facilitated by the provision of the installation hole 7.

[0032] Specifically, a sheet groove 13 is provided inside the inner aluminum tube 12 , and a beryllium sheet 9 is inlaid and installed on the inner wall of the sheet groove 13 .

[0033] In this embodiment: the installation position of BPM6 is limited by the setting of the installation hole 7.

[0034] Specifically, the outer aluminum tube includes a right half outer aluminum tube 11 and a left half outer aluminum tube 10, which are axially mounted on both sides of the outer surface of the inner aluminum tube 12 to form a semi-enclosed structure.

[0035] In this embodiment: by setting the mounting hole 7, the BPM6 is installed in a shape that fits the BPM6.

[0036] Specifically, there are two beryllium tubes, which are symmetrically installed at both ends of the cooling circuit amplification chamber 3 . The beryllium tubes include an inner beryllium tube 1 and an outer beryllium tube 2 . The inner beryllium tube 1 is installed in the outer beryllium tube 2 as a sleeve structure.

[0037] In this embodiment: the right half outer aluminum tube 11 and one end of the left half outer aluminum tube 10 are fixed by setting the outer aluminum tube flange 8.

[0038] Specifically, the inner wall of the end flange 5 is fixedly connected with the outer aluminum tube flange 8 ；

[0039] In this embodiment, the beryllium sheet 9 is conveniently fixed by providing the sheet groove 13 .

[0040] Specifically, the number of sheet slots 13 opened inside each inner aluminum tube 12 is two;

[0041] In this embodiment, the outer aluminum tube groove 14 is provided to facilitate fixing the right half outer aluminum tube 11 and the left half outer aluminum tube 10 .

[0042] Specifically, the installation positions of the two beryllium sheets 9 on the same inner aluminum tube 12 are symmetrical to each other.

[0043] In this embodiment, the cooling circuit amplifying cavity 3 and the inner aluminum tube 12 are connected together by providing a short aluminum tube 4 .

[0044] Specifically, the outer surface of each inner aluminum tube 12 is provided with an outer aluminum tube groove 14 , and the number of the outer aluminum tube grooves 14 on each inner aluminum tube 12 is four.

[0045] In this embodiment, the cooling circuit amplifying cavity 3 is provided to facilitate fixing of the outer beryllium tube 2 and the inner beryllium tube 1 .

[0046] The working principle and use process of the present invention: When the beam tube structure that can reduce the energy consumption of particle extraction is in use, the positive and negative electrons collide in the beam tube and then escape from the inner aluminum tube 12 or the beryllium sheet 9. Since the amount of material to be passed through is small, the particles can more easily pass through and reach the LumiCal detector fixed on the upper side of the inner aluminum tube 12, thereby achieving the physical requirements. Moreover, since the particles of this structure only need to pass through one layer of aluminum tube or beryllium sheet 9 to reach the LumiCal detector, compared with the previous need to pass through two layers of aluminum tubes and a layer of water flow, the amount of material passed through is less, and the accuracy of physical detection is also more accurate.

[0047] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A beam tube structure capable of reducing particle extraction energy consumption, characterized in that: The beam tube comprises a beryllium tube and a cooling circuit amplifying cavity (3), a short aluminum tube (4) and an epitaxial tube (15) which are radially symmetrically and sequentially installed along the left and right ends of the beryllium tube, respectively; the radial cross section of the epitaxial tube (15) is in a gradually changing racetrack shape; the installation sequence of the beam tube is as follows: the left and right ends of the beryllium tube are respectively installed with the cooling circuit amplifying cavity (3), the other ends of the two cooling circuit amplifying cavities (3) are respectively installed with the short aluminum tubes (4), and the other ends of the two short aluminum tubes (4) are respectively installed with the epitaxial tubes (15).

2. A beam tube structure capable of reducing particle extraction energy consumption according to claim 1, characterized in that: The epitaxial tube (15) comprises an inner aluminum tube (12) and an outer aluminum tube, one end of the inner aluminum tube (12) is fixedly connected to an end flange (5), an outer surface of the end flange (5) is provided with a mounting hole (7), and a BPM (6) is installed inside the mounting hole (7).

3. A beam tube structure capable of reducing particle extraction energy consumption according to claim 2, characterized in that: A sheet groove (13) is provided inside the inner aluminum tube (12), and a beryllium sheet (9) is inlaid and installed on the inner wall of the sheet groove (13).

4. A beam tube structure capable of reducing particle extraction energy consumption according to claim 2, characterized in that: The outer aluminum tube comprises a right half outer aluminum tube (11) and a left half outer aluminum tube (10), and the right half outer aluminum tube (11) and the left half outer aluminum tube (10) are respectively axially mounted on both sides of the outer surface of the inner aluminum tube (12) to form a semi-enclosed structure.

5. The beam tube structure capable of reducing particle extraction energy consumption according to claim 1, characterized in that: The number of the beryllium tubes is two, and the two beryllium tubes are symmetrically installed at the two ends of the cooling circuit amplification chamber (3), respectively. The beryllium tubes include an inner beryllium tube (1) and an outer beryllium tube (2), and the inner beryllium tube (1) is installed inside the outer beryllium tube (2) in a sleeve-like structure.

6. A beam tube structure capable of reducing particle extraction energy consumption according to claim 2, characterized in that: The inner wall of the end flange (5) is fixedly connected to an outer aluminum tube flange (8).

7. The beam tube structure capable of reducing particle extraction energy consumption according to claim 3, characterized in that: The number of sheet slots (13) opened inside each of the inner aluminum tubes (12) is two.

8. The beam tube structure capable of reducing particle extraction energy consumption according to claim 2, characterized in that: The installation positions of the two beryllium sheets (9) on the same inner aluminum tube (12) are symmetrical to each other.

9. The beam tube structure capable of reducing particle extraction energy consumption according to claim 2, characterized in that: An outer aluminum tube groove (14) is provided on the outer surface of each inner aluminum tube (12).

10. A beam tube structure capable of reducing particle extraction energy consumption according to claim 9, characterized in that: The number of the outer aluminum tube grooves (14) on each inner aluminum tube (12) is four.

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