Small-volume gas stripper device for changing charge morphology of charged particles

Abstract

The invention relates to the technical field of gas peelers, in particular to a small-volume gas peeler device for changing the charge form of charged particles. The gas stripper mainly aims at solving the problems that an existing gas stripper needs to increase the medium gas injection amount in order to improve the gas pressure in a stripping cavity, so that the burden of a vacuum system is too heavy, beam energy loss and quality deterioration are caused, the operation cost and the system complexity are increased, the dependence limitation of high gas amount is not broken through, and light gas is difficult to reach the gas pressure required by effective stripping. According to the technical scheme, the device comprises a stripping pipe, and the outer side of the stripping pipe is sleeved with an outer sleeve; the positioning platform is arranged at the bottom of the stripping pipe and is fixed on the inner wall of the outer sleeve; the first positioning assembly and the second positioning assembly are fixed to the inner wall of the outer sleeve. The gas pressure in the stripping cavity can be improved while the medium gas injection amount is reduced, the effective stripping requirement of light gas is met, and finally the beam transmission efficiency and quality of the serial accelerator are improved.

Description

Technical Field

[0001] This invention relates to the field of gas stripper technology, and more particularly to a small-volume gas stripper device that alters the charge morphology of charged particles. Background Technology

[0002] In the particle beam transport system of a tandem accelerator, the gas stripper is the core device for realizing the charge state conversion of negatively charged particle beams, and its performance directly determines the beam transport efficiency and beam quality. The electron stripping process of negatively charged particles depends on the collision probability between the particles and the gas molecules in the stripping chamber, and the collision probability is directly determined by the gas pressure in the stripping chamber. Higher gas pressure means more frequent interactions between particles, thereby more efficiently changing the charge state of the charged particles.

[0003] However, in conventional designs of existing gas strippers, increasing the gas pressure within the stripping chamber to enhance the collision probability typically involves increasing the injection volume of the medium gas. This method of achieving high pressure through high gas volume requires a large amount of injected gas to be rapidly discharged through vacuum equipment to maintain the overall high vacuum environment of the accelerator. High gas volume injection easily exceeds the pumping capacity limit of the vacuum system, not only limiting further increases in gas volume but also potentially causing beam scattering due to a decrease in vacuum, reducing transmission efficiency. While high gas volume injection can increase gas pressure, it also increases the probability of inelastic collisions between the particle beam and gas molecules, leading to increased beam energy loss and increased energy divergence, affecting subsequent acceleration and focusing accuracy. Furthermore, high gas volume injection increases the cost of medium gas consumption, and some gases require additional safety control measures, further increasing system complexity and operating energy consumption.

[0004] While existing technologies have attempted to improve beam acceptance by optimizing the gas circulation structure, they have not yet overcome the inherent limitation of high gas volume dependence. This is especially true for light gases, which, due to their low density and difficulty in pumping, struggle to achieve the required pressure for effective stripping even with a large gas volume injection, resulting in charge state conversion efficiency that fails to meet practical application needs. Therefore, this invention proposes a small-volume gas stripper device that alters the charge state of charged particles. Summary of the Invention

[0005] The purpose of this invention is to address the problems in the prior art where existing gas strippers require an increased amount of medium gas injection to improve the gas pressure inside the stripping chamber, resulting in excessive burden on the vacuum system, beam energy loss and quality degradation, increased operating costs and system complexity, and failure to overcome the limitation of high gas volume dependence, making it difficult for light gases to achieve the gas pressure required for effective stripping. The invention proposes a small-volume gas stripper device that changes the charge morphology of charged particles.

[0006] The technical solution of the present invention: A small-volume gas stripper device for changing the charge form of charged particles, comprising a stripping tube, an outer sleeve sleeved on the outside of the stripping tube; a positioning platform disposed at the bottom of the stripping tube, the positioning platform being fixed to the inner wall of the outer sleeve; a first positioning component and a second positioning component fixed to the inner wall of the outer sleeve; a lower gas resistance installed at one end of the stripping tube, and an upper gas resistance installed at the other end of the stripping tube; flanges disposed at both ends of the outer sleeve, a flange gas resistance installed on the side of the flange away from the stripping tube; and three support structures installed on the inner wall of the stripping tube, the support structures being used to support the stripping tube.

[0007] Optionally, a first cavity is formed in the middle of the peeling tube, and second cavities are formed at both ends of the peeling tube. The inner diameter of the second cavity is larger than that of the first cavity. A transition cavity is formed in the peeling tube between the first cavity and the second cavity. A first connecting plate is fixedly connected to the bottom of the peeling tube. A plurality of first threaded holes are formed on the first connecting plate. The plurality of first threaded holes are arranged in a ring array. Three side tubes are connected to the side of the peeling tube. An installation groove is formed at the end of the side tube away from the peeling tube.

[0008] Optionally, one side of the outer tube is connected to a first air tube communicating with it, and the side of the outer tube away from the first air tube is connected to three second air tubes communicating with it. The side tube is located in the second air tube, and a fixing plate is fixedly connected in the second air tube. The fixing plate has air holes.

[0009] Optionally, the positioning platform includes multiple connecting plates fixedly connected to the inner wall of the outer sleeve. The multiple connecting plates are arranged in a fan shape and distributed in a ring array. An intermediate disk is fixedly connected between the multiple connecting plates. A first circular hole is opened on the connecting plate. A second circular hole is opened in the center of the intermediate disk. Multiple first connecting holes are opened on the intermediate disk around the outer periphery of the second circular hole. The multiple first connecting holes are distributed in a ring array.

[0010] Optionally, the first positioning component includes six first fixing blocks, which are divided into three groups. Each group includes two first fixing blocks, one above the other. The three groups of first fixing blocks are arranged in a circular array. The first fixing blocks are fan-shaped and fixedly connected to the inner wall of the outer sleeve. The first fixing blocks are provided with first positioning holes.

[0011] Optionally, the second positioning component includes three second fixing blocks arranged in a circular array. The three second fixing blocks are fan-shaped and fixedly connected to the inner wall of the outer sleeve. The second fixing blocks are provided with second positioning holes. The second positioning component is located above the first positioning component.

[0012] Optionally, the lower air resistance is located at the bottom of the positioning platform. The lower air resistance includes a second connecting plate. A first through hole is opened in the middle of the second connecting plate. Multiple second connecting holes are opened on the second connecting plate around the outer periphery of the first through hole. The multiple second connecting holes are distributed in a ring array.

[0013] Optionally, the upper air resistance includes a connecting sleeve threaded to the top of the stripping tube, a positioning plate fixedly connected to the top of the connecting sleeve, a second through hole in the middle of the positioning plate, and a plurality of third positioning holes on the positioning plate arranged on the outer periphery of the second through hole, the plurality of third positioning holes being distributed in a ring array.

[0014] Optionally, the flange gas lock includes a fixing plate, and a mounting plate is fixedly connected to the flange gas lock near the outer sleeve. The mounting plate is threaded into the flange, and the fixing plate and the mounting plate have a third through hole in the middle.

[0015] Optionally, the support structure includes a first positioning block and a second positioning block, a connecting rod is fixedly connected between the first positioning block and the second positioning block, a second threaded hole is provided in the first positioning block, the first positioning block is located between two first fixing blocks in the same group, the second threaded hole is coaxially arranged with the first positioning hole, and a third threaded hole is provided on the second positioning block.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] This invention improves the performance of the gas stripper by setting up a stripping tube and a gas resistance, which allows charged particles to fully react with the medium gas.

[0018] Furthermore, by setting up the first positioning component and the second positioning component, the alignment and centering of the stripping tube and the outer tube can be adjusted.

[0019] Furthermore, by setting the lower air resistance, upper air resistance, and flange air resistance, the size of the first through hole, the second through hole, and the third through hole can be adjusted to change the gas flow channel.

[0020] In summary, this invention can increase the gas pressure inside the stripping chamber while reducing the amount of medium gas injected, effectively stripping light gas and ultimately improving the beam transmission efficiency and quality of the tandem accelerator. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a small-volume gas stripper device that alters the charge state of charged particles.

[0022] Figure 2 yes Figure 1 A schematic diagram of the disassembled structure;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the outer sleeve;

[0024] Figure 4 This is a top view of the outer tube;

[0025] Figure 5 This is a schematic diagram of the stripping tube structure;

[0026] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure;

[0027] Figure 7 This is a schematic diagram of the lower air resistance structure;

[0028] Figure 8 This is a schematic diagram of the upper air resistance structure;

[0029] Figure 9 This is a schematic diagram of the flange gas lock structure;

[0030] Figure 10 This is a structural diagram of the supporting structure.

[0031] Figure label:

[0032] 1. Stripping tube; 11. First cavity; 12. Second cavity; 13. Transition cavity; 14. First connecting plate; 15. First threaded hole; 16. Side tube; 17. Mounting groove;

[0033] 2. Outer tube; 21. First air tube; 22. Second air tube; 23. Fixing plate; 24. Air port;

[0034] 3. Positioning platform; 31. Connecting plate; 32. Intermediate plate; 33. First circular hole; 34. Second circular hole; 35. First connecting hole;

[0035] 4. First positioning component; 41. First fixing block; 42. First positioning hole;

[0036] 5. Second positioning component; 51. Second fixing block; 52. Second positioning hole;

[0037] 6. Lower air resistance; 61. Second connecting plate; 62. First through hole; 63. Second connecting hole;

[0038] 7. Upper air lock; 71. Connecting sleeve; 72. Positioning plate; 73. Third positioning hole;

[0039] 8. Flange gas lock; 81. Fixing plate; 82. Mounting plate; 83. Third through hole;

[0040] 9. Support structure; 91. First positioning block; 92. Second positioning block; 93. Connecting rod; 94. Second threaded hole; 95. Third threaded hole. Detailed Implementation

[0041] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0043] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] Example

[0047] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, this invention proposes a small-volume gas stripper device for altering the charge state of charged particles, comprising a stripping tube 1 with a height of 280 mm and an outer diameter of 24 mm. The stripping tube 1 has a 20 mm threaded section on its outer diameter, running downwards from the top. An outer sleeve 2 is fitted around the stripping tube 1, with a height of 350 mm, an inner diameter of 108 mm, and a wall thickness of 3 mm. A first cavity 11 is formed in the middle of the stripping tube 1, with a length of 150 mm and an inner diameter of 6 mm. Second cavities 12 are formed at both ends of the stripping tube 1, with an inner diameter larger than that of the first cavity 11, a length of 35 mm, and an inner diameter of 12 mm. A transition cavity 13, formed within the peeling tube 1, is provided between the first cavity 11 and the second cavity 12. The transition cavity 13 is 35 mm long and has an inner diameter that is uniformly varied between 6 mm and 12 mm via a sloping surface design. A first connecting plate 14 is fixedly connected to the bottom of the peeling tube 1. The first connecting plate 14 is 10 mm high and has an outer diameter of 50 mm. Eight first threaded holes 15 are formed on the first connecting plate 14, arranged in a circular array. The first threaded holes 15 are 18 mm away from the central axis of the outer sleeve tube 2, and are M8 threaded holes. Three side tubes 16 are connected to the side of the peeling tube 1. The middle side tube 16 is connected to the center of the side of the peeling tube 1, the upper side tube 16 is 85 mm away from the center, and the lower side tube 16 is 120 mm away from the center. The side tubes 16 have an inner diameter of 6 mm, a wall thickness of 7 mm, and a length of 54 mm, and are connected to the peeling tube 1. The side tube 16 has an installation groove 17 at the end away from the stripping tube 1. The installation groove 17 has an inner diameter of 9 mm, an outer diameter of 16.4 mm, and a height of 2.8 mm. An O-ring with an inner diameter of 9 mm and a wire diameter of 3.5 mm is installed in the installation groove 17.

[0048] Please see Figure 3 One side of the outer sleeve 2 is connected to a first air pipe 21, which is located in the middle and communicates with the interior of the outer sleeve 2. The first air pipe 21 has an inner diameter of 108 mm, a wall thickness of 2.5 mm, and a length of 70 mm, and is used for welding CF100 standard flanges. On the side of the outer sleeve 2 away from the first air pipe 21, three second air pipes 22 are connected to it. The second air pipes 22 have an inner diameter of 28 mm, a wall thickness of 1 mm, and a length of 50 mm. A side pipe 16 is located within the second air pipes 22, and a fixed plate 23 is fixedly connected to each second air pipe 22. The fixed plate 23 has air holes 24 with a diameter of 6 mm. The middle second air pipe 22 is located in the middle of the outer sleeve 2, the upper second air pipe 22 is 85 mm from the middle, and the lower second air pipe 22 is 120 mm from the middle.

[0049] Furthermore, such as Figure 3 and Figure 4As shown, the aforementioned peeler device includes a positioning platform 3 disposed at the bottom of the peeling tube 1. The positioning platform 3 is fixed to the inner wall of the outer tube 2, and the positioning platform 3 is located between 30 mm and 22 mm from the lower end face of the peeling tube 1. The positioning platform 3 has a thickness of 8 mm. The positioning platform 3 includes multiple connecting plates 31 fixedly connected to the inner wall of the outer tube 2. The multiple connecting plates 31 are arranged in a fan shape and distributed in a circular array. The outer diameter of the connecting plates 31 is 108 mm, the inner diameter is 50 mm, and the fan angle is 60°. An intermediate disk 32 with a diameter of 50 mm is fixedly connected between the multiple connecting plates 31. A first circular hole 33 is opened on the connecting plate 31, located at the center of the connecting plate 31 40 mm from the central axis of the outer tube 2, and has a diameter of 20 mm. A second circular hole 34 with a diameter of 20 mm is opened in the middle of the intermediate disk 32. The outer periphery of the second circular hole 34 is provided with eight first connecting holes 35 opened on the intermediate plate 32. The eight first connecting holes 35 are arranged in a ring array. The first connecting holes 35 are located 18 mm away from the central axis of the outer sleeve 2 and have a diameter of 8.4 mm.

[0050] For details, please refer to Figure 1 , Figure 3 and Figure 4 The aforementioned peeler device includes a first positioning component 4 and a second positioning component 5 fixed to the inner wall of the outer sleeve 2. The first positioning component 4 includes six first fixing blocks 41, which are divided into three groups. Each group includes two first fixing blocks 41, one above the other. The two first fixing blocks 41 in the same group are located at distances of 55 mm and 60 mm, and 70 mm and 75 mm from the upper end face of the outer sleeve 2, respectively. The thickness of the first fixing block 41 is 5 mm. The three groups of first fixing blocks 41 are arranged in a circular array. The first fixing blocks 41 have a fan-shaped structure and are fixedly connected to the inner wall of the outer sleeve 2. The outer diameter of the first fixing block 41 is 108 mm, the inner diameter is 90 mm, and the angle is 30°. The tip of the first fixing block 41 is rounded with an R2 radius. A first positioning hole 42 is provided in the first fixing block 41. The first positioning hole 42 is located at a distance of 49.5 mm from the central axis of the outer sleeve 2, and the diameter of the first positioning hole 42 is 5.5 mm.

[0051] Furthermore, the second positioning component 5 includes three second fixing blocks 51 arranged in a circular array. The distance between each second fixing block 51 and the upper surface of the outer sleeve 2 is between 25 mm and 35 mm, and the height of each second fixing block 51 is 10 mm. The three second fixing blocks 51 have a fan-shaped structure and are fixedly connected to the inner wall of the outer sleeve 2. The outer diameter of each second fixing block 51 is 108 mm, the inner diameter is 90 mm, and the angle is 16°. The tips of each second fixing block 51 are rounded with an R2 radius. A second positioning hole 52 is formed in each second fixing block 51, located 49 mm from the central axis of the outer sleeve 2, with a diameter of 4 mm. The second positioning component 5 is located above the first positioning component 4.

[0052] Specifically, such as Figure 2 and Figure 7 As shown, the aforementioned peeler device includes a lower air resistance 6 installed at one end of the peeling tube 1, and an upper air resistance 7 installed at the other end of the peeling tube 1. The lower air resistance 6 is located at the bottom of the positioning platform 3. The lower air resistance 6 includes a second connecting plate 61, which has a diameter of 50 mm and a height of 2 mm. A first through hole 62 with a diameter of 5 mm is opened in the middle of the second connecting plate 61. Multiple second connecting holes 63 are provided on the outer periphery of the first through hole 62, and the multiple second connecting holes 63 are arranged in a ring array. The second connecting holes 63 are located 18 mm away from the central axis of the second connecting plate 61, and the diameter of the second connecting holes 63 is 8.6 mm.

[0053] Please see Figure 2 and Figure 8 The upper air resistance 7 includes a connecting sleeve 71 threadedly connected to the top of the stripping tube 1. The connecting sleeve 71 has an outer diameter of 28 mm, an inner diameter of 24 mm, and a height of 20 mm. The inner diameter of the connecting sleeve 71 is threaded. A positioning plate 72 is fixedly connected to the top of the connecting sleeve 71. The positioning plate 72 has a diameter of 45 mm and a height of 3 mm. A second through hole with a diameter of 5 mm is opened in the middle of the positioning plate 72. Eight third positioning holes 73 are provided on the outer periphery of the second through hole and are arranged in a circular array on the positioning plate 72. The third positioning holes 73 are 18 mm away from the central axis of the positioning plate 72 and have a diameter of 4 mm.

[0054] Finally, please see Figure 1 , Figure 2 and Figure 9 The aforementioned stripper device includes flanges located at both ends of the outer sleeve 2. Each flange has a 100mm diameter hole at its center, with threads on the hole. Other dimensions are determined based on the specific application. A flange airlock 8 is installed on the side of the flange furthest from the stripper 1. The flange airlock 8 includes a fixing plate 81, which is a regular quadrilateral with a side length of 120mm and a height of 7mm. The 90° corner of the fixing plate 81 is rounded with an R10 radius. A mounting plate 82 is fixedly connected to the flange airlock 8 near the outer sleeve 2. The mounting plate 82 has a diameter of 100mm and a height of 10mm, with threads on its outer diameter. The mounting plate 82 is threaded into the flange. A third through hole 83, with a diameter of 40mm, is shared by the fixing plate 81 and the mounting plate 82 in the center.

[0055] Furthermore, such as Figure 1 and Figure 10As shown, the aforementioned peeler device includes multiple support structures 9 installed on the inner wall of the peeling tube 1, which support the peeling tube 1. Each support structure 9 includes a first positioning block 91 and a second positioning block 92, with a connecting rod 93 fixedly connected between the first positioning block 91 and the second positioning block 92. The first positioning block 91 has an outer diameter of 108 mm, an inner diameter of 90 mm, an angle of 16°, and a height of 9.5 mm. The second positioning block 92 has an outer diameter of 35 mm, an inner diameter of 25.5 mm, an angle of 30°, and a height of 15 mm. A second threaded hole 94 is provided in the first positioning block 91, located 49.5 mm from the central axis on the plane, and is an M5 threaded hole. The first positioning block 91 is located between two first fixing blocks 41 in the same group, and the second threaded hole 94 is coaxially arranged with the first fixing block 41. The second positioning block 92 has a third threaded hole 95, which is opened horizontally and is an M4 threaded hole.

[0056] It is worth mentioning that the stripping tube 1 is inserted into the outer tube 2 from the upper port of the outer tube 2, and the side tube 16 is inserted into the second air tube 22 accordingly. One end of the side tube 16 contacts the fixed plate 23 and compresses the O-ring seal. The first connecting plate 14 is located above the positioning platform 3, and the lower air resistance 6 is located below the positioning platform 3 and is assembled and connected by an M8 hexagon socket screw. The support structure 9 is inserted into the outer tube 2 from the upper port of the outer tube 2, and the first positioning block 91 is moved between the two first fixed blocks 41 in the same group. The first fixed block 41 and the first positioning block 91 are connected by an M5 hexagon socket screw. An M4 hexagon socket screw is screwed into the third threaded hole 95 to compress the stripping tube 1. The alignment and centering of the stripping tube 1 and the outer tube 2 can be adjusted by the length of the screw. The connecting sleeve 71 is threaded to the top of the stripping tube 1. A 3 mm diameter copper wire is passed through the second positioning hole 52 and the third positioning hole 73 in the upper air resistance 7. The alignment and centering of the stripping tube 1 and the outer tube 2 can be adjusted by the number of turns of the copper wire.

[0057] In this embodiment, the medium gas required for the charge stripping reaction is injected through a middle second gas pipe 22 connected to the side wall of the outer casing 2. Since the three side pipes 16 connected to the side of the stripping tube 1 are inserted into the three second gas pipes 22 respectively, and an O-ring is installed in the mounting groove 17 at the end of the side pipe 16 away from the stripping tube 1, one end of the side pipe 16 contacts the fixing plate 23 inside the second gas pipe 22 and compresses the O-ring, thus sealing the gas passage and preventing medium gas leakage. The injected medium gas enters the first cavity 11 in the middle of the stripping tube 1 through the communication structure between the side pipe 16 and the stripping tube 1, forming a uniform reaction gas environment and providing the necessary medium for the subsequent charge stripping reaction.

[0058] The negative ion beam to be processed first passes through the flange gas resistance 8 installed on the upper flange of the outer sleeve tube 2. Specifically, it enters through the third through hole 83 jointly opened in the middle of the fixing plate 81 and the mounting plate 82 of the flange gas resistance 8. Subsequently, the beam passes through the second through hole in the middle of the positioning plate 72 of the upper gas resistance 7 installed on the upper end of the stripping tube 1 and enters the interior of the stripping tube 1. In the first cavity 11 of the stripping tube 1, the negative ion beam collides and reacts with the previously injected medium gas, achieving charge stripping. The second cavities 12 at both ends of the stripping tube 1 are connected to the first cavity 11 through a transition cavity 13. This transition structure can guide and focus the beam, ensuring that the beam enters the reaction area stably. At the same time, the upper gas resistance 7 and the lower gas resistance 6 at the lower end can limit and collimate the beam, ensuring the transmission accuracy of the beam during the reaction process.

[0059] After colliding with the medium gas, the negative ion beam loses electrons and transforms into a positive ion beam, completing the change in charge state. The positive ion beam generated by the reaction continues to propagate downwards, passing sequentially through the first through hole 62 of the lower gas resistance 6 at the lower end of the stripping tube 1, the second circular hole 34 in the middle of the intermediate disk 32 of the positioning platform 3, and finally through the third through hole 83 of the flange gas resistance 8 at the lower end of the outer sleeve tube 2, and is output to the next stage of the tandem accelerator.

[0060] To prevent the injected medium gas from diffusing into the accelerator tube and affecting its vacuum level, a first gas pipe 21 connected to one side of the outer tube 2 is connected to a molecular pump. The pump removes any leaks or small amounts of gas between the outer tube 2 and the stripping tube 1, maintaining a low vacuum environment throughout the device. Simultaneously, two second gas pipes 22 on both sides are connected to vacuum gauges, allowing real-time monitoring of vacuum changes inside the stripping tube 1. Operators can adjust the injected medium gas volume and the pumping rate based on the monitoring data to ensure the vacuum level remains stable within a reasonable range, guaranteeing the efficiency and stability of the charge stripping reaction.

[0061] Throughout the operation, the first connecting plate 14 at the bottom of the peeling tube 1 is positioned above the positioning platform 3, and the lower air resistance 6 is positioned below the positioning platform 3. It is assembled and connected to the first threaded hole 15 of the first connecting plate 14, the first connecting hole 35 of the intermediate plate 32, and the second connecting hole 63 of the lower air resistance 6 via M8 hexagonal screws, thus achieving positioning of the lower end of the peeling tube 1. The first positioning block 91 of the support structure 9 is located between the two first fixing blocks 41 in the same group as the first positioning assembly 4. It connects the first positioning hole 42 of the first fixing block 41 with the second threaded hole 94 of the first positioning block 91 via M5 hexagonal screws. An M4 hexagonal screw is screwed into the third threaded hole 95 of the second positioning block 92 to press the peeling tube 1, thereby adjusting the alignment and centering of the peeling tube 1 and the outer sleeve 2. In addition, the upper air resistance 7 is threaded to the top of the stripping tube 1 through the connecting sleeve 71. A copper wire with a diameter of 3 mm is passed through the second positioning hole 52 of the second positioning component 5 and the third positioning hole 73 of the upper air resistance 7 to further assist in adjusting the centering of the stripping tube 1, ensuring the stability of the beam transmission path and guaranteeing the reliability of the device in long-term operation.

[0062] The above specific embodiments are merely optional embodiments of the present invention. Based on the technical solutions of the present invention 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 small-volume gas stripper device for altering the charge state of charged particles, characterized in that, include: A stripping tube (1) is provided with an outer sleeve (2) on the outside of the stripping tube (1); A positioning platform (3) is set at the bottom of the stripping tube (1), and the positioning platform (3) is fixed to the inner wall of the outer tube (2); The first positioning component (4) and the second positioning component (5) are fixed to the inner wall of the outer sleeve (2); A lower air stop (6) is installed at one end of the stripping tube (1), and an upper air stop (7) is installed at the other end of the stripping tube (1). Flanges are provided at both ends of the outer sleeve (2), and a flange air lock (8) is installed on the side of the flange away from the stripping tube (1). Three support structures (9) are installed on the inner wall of the stripping tube (1) to support the stripping tube (1).

2. The small-volume gas stripper device for changing the charge state of charged particles according to claim 1, characterized in that, The peeling tube (1) has a first cavity (11) in the middle and a second cavity (12) at both ends. The inner diameter of the second cavity (12) is larger than the inner diameter of the first cavity (11). A transition cavity (13) is provided between the first cavity (11) and the second cavity (12) in the peeling tube (1). A first connecting plate (14) is fixedly connected to the bottom of the peeling tube (1). A plurality of first threaded holes (15) are provided on the first connecting plate (14). The plurality of first threaded holes (15) are arranged in a ring array. Three side tubes (16) are connected to the side of the peeling tube (1). An installation groove (17) is provided at the end of the side tube (16) away from the peeling tube (1).

3. The small-volume gas stripper device for changing the charge state of charged particles according to claim 2, characterized in that, The outer tube (2) is connected to a first air tube (21) on one side, and three second air tubes (22) are connected to the outer tube (2) on the side away from the first air tube (21). The side tube (16) is located in the second air tube (22), and a fixed plate (23) is fixedly connected in the second air tube (22). An air hole (24) is opened on the fixed plate (23).

4. A small-volume gas stripper device for changing the charge state of charged particles according to claim 3, characterized in that, The positioning platform (3) includes multiple connecting plates (31) fixedly connected to the inner wall of the outer sleeve (2). The multiple connecting plates (31) are arranged in a fan shape and distributed in a ring array. A middle disk (32) is fixedly connected between the multiple connecting plates (31). A first circular hole (33) is opened on the connecting plate (31). A second circular hole (34) is opened in the middle of the middle disk (32). Multiple first connecting holes (35) are opened on the middle disk (32) around the second circular hole (34). The multiple first connecting holes (35) are distributed in a ring array.

5. A small-volume gas stripper device for changing the charge state of charged particles according to claim 4, characterized in that, The first positioning component (4) includes six first fixing blocks (41). The six first fixing blocks (41) are divided into three groups. Each group includes two first fixing blocks (41) on the top and bottom. The three groups of first fixing blocks (41) are arranged in a ring array. The first fixing block (41) is a fan-shaped structure and is fixedly connected to the inner wall of the outer sleeve (2). The first fixing block (41) has a first positioning hole (42).

6. A small-volume gas stripper device for changing the charge state of charged particles according to claim 5, characterized in that, The second positioning component (5) includes three second fixing blocks (51), which are arranged in a ring array. The three second fixing blocks (51) are fan-shaped and fixedly connected to the inner wall of the outer sleeve (2). The second fixing blocks (51) have second positioning holes (52). The second positioning component (5) is located above the first positioning component (4).

7. A small-volume gas stripper device for changing the charge state of charged particles according to claim 6, characterized in that, The lower air resistance (6) is located at the bottom of the positioning platform (3). The lower air resistance (6) includes a second connecting plate (61). A first through hole (62) is provided in the middle of the second connecting plate (61). A plurality of second connecting holes (63) are provided on the outer periphery of the first through hole (62) and the plurality of second connecting holes (63) are arranged in a ring array.

8. A small-volume gas stripper device for changing the charge state of charged particles according to claim 7, characterized in that, The upper air resistance (7) includes a connecting sleeve (71) threaded to the top of the stripping tube (1). A positioning plate (72) is fixedly connected to the top of the connecting sleeve (71). A second through hole is opened in the middle of the positioning plate (72). Multiple third positioning holes (73) are opened on the positioning plate (72) around the second through hole. The multiple third positioning holes (73) are arranged in a ring array.

9. A small-volume gas stripper device for changing the charge state of charged particles according to claim 8, characterized in that, The flange gas lock (8) includes a fixing plate (81). The flange gas lock (8) is fixedly connected to a mounting plate (82) on the side near the outer sleeve (2). The mounting plate (82) is threaded into the flange. The fixing plate (81) and the mounting plate (82) have a third through hole (83) in the middle.

10. A small-volume gas stripper device for changing the charge state of charged particles according to claim 9, characterized in that, The support structure (9) includes a first positioning block (91) and a second positioning block (92). A connecting rod (93) is fixedly connected between the first positioning block (91) and the second positioning block (92). A second threaded hole (94) is provided in the first positioning block (91). The first positioning block (91) is located between two first fixing blocks (41) in the same group. The second threaded hole (94) is coaxially arranged with the first positioning hole (42). A third threaded hole (95) is provided on the second positioning block (92).

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