Beam current blocking device for high-current heavy ion accelerator

Abstract

The invention relates to the technical field of accelerator beam diagnosis, in particular to a beam blocking device for a high-current heavy ion accelerator. The beam blocking device comprises a probe assembly used for absorbing secondary particles; the vacuum outer assembly is provided with an anti-radiation motor and a magnetofluid sealing vacuum transmission device and is used for driving the probe assembly to move in the high-current heavy ion accelerator from the outside; the vacuum inner supporting assembly is used for fixing the probe assembly; one end of the in-vacuum movement assembly is connected with the magnetofluid sealing vacuum transmission device, and the other end of the in-vacuum movement assembly is connected with the probe assembly; wherein the probe assembly comprises an oxygen-free copper cooling body and a graphite absorber, and the oxygen-free copper cooling body is provided with a clamping structure used for fixing the graphite absorber; the top face and the bottom face of the graphite absorber are respectively provided with a wedge-shaped groove, and the clamping structure is provided with a wedge-shaped boss which is connected with the wedge-shaped groove in a matched mode.

Description

Technical Field

[0001] This invention relates to the field of accelerator beam diagnostics technology, and in particular to a beam blocking device for high-intensity heavy ion accelerators. Background Technology

[0002] The High Intensity Heavy Ion Accelerator (HIAF) is a heavy ion science research facility with multiple scientific applications. The High Energy Fragment Separator (HFRS) is a crucial component of the HIAF, connecting the boost ring (BRing) and the high-precision spectrometer ring (SRing). The HFRS operates in two modes: transmission line mode and separator mode (generating, separating, and identifying the radioactive secondary beam). The HFRS primarily consists of a pre-separator and a main separator. The pre-separator region is where beam loss is most concentrated; when the beam is injected into the HFRS, it first penetrates the primary target. This process generates a series of secondary particles. Three beam blocking devices are positioned behind three deflecting diodes. These beam blocking devices are used to absorb unwanted secondary particles, thus achieving initial separation of the secondary beam.

[0003] According to radiation calculations, after one month of continuous irradiation, the residual dose on the surface of the beam blocking device was very high (9.58 × 10⁷ μSv / h), and the residual dose rate at a distance of 30 cm was 3.41 × 10⁵ μSv / h. Under such high radiation doses, ensuring the normal operation and maintaining high accuracy of the beam blocking device is extremely difficult.

[0004] Furthermore, among the beams requiring blocking, uranium beams have the highest deposition power, reaching 7.8 kW. Moreover, the Bragg peak of uranium beams is relatively shallow, meaning they are primarily deposited on the surface, resulting in a high power density during beam deposition. Therefore, beam blocking devices require highly efficient cooling of the probe section. Additionally, the residual radiation dose from beam blocking devices is high, necessitating downtime of at least one month to ensure the safety of personnel, significantly increasing the time and labor costs of maintenance work.

[0005] Therefore, it is necessary to design a beam blocking device that can operate stably and reliably in a strong radiation environment, has high precision, and can withstand high power density, in order to solve the above problems. Summary of the Invention

[0006] This invention aims to solve the technical problems existing in related technologies. To this end, this invention proposes a beam blocking device for high-intensity heavy ion accelerators to improve the cooling efficiency of the probe assembly and ensure long-term stable operation of the beam blocking device under high power and continuous beam conditions.

[0007] This invention provides a beam blocking device for a high-intensity heavy ion accelerator, comprising: Probe assembly for absorbing secondary particles; The vacuum external assembly is equipped with a radiation-resistant motor and a magnetohydrodynamic sealed vacuum transmission device, which is used to drive the probe assembly to move in the high-intensity heavy ion accelerator from the outside. A vacuum internal support assembly is used to fix the probe assembly; A vacuum motion assembly, one end of which is connected to the magnetohydrodynamic sealed vacuum transmission device, and the other end of which is connected to the probe assembly; The probe assembly includes an oxygen-free copper cooler and a graphite absorber, wherein the oxygen-free copper cooler is provided with a clamping structure for fixing the graphite absorber. The graphite absorber has wedge-shaped grooves on its top and bottom surfaces, and the clamping structure has wedge-shaped protrusions that mate with the wedge-shaped grooves.

[0008] According to the present invention, a beam blocking device for a high-current heavy ion accelerator is provided, wherein the clamping structure includes clamping plates, and two clamping plates are arranged in parallel and spaced apart on one side of the oxygen-free copper cooler to form a mounting groove penetrating the end faces of both ends of the oxygen-free copper cooler. The wedge-shaped boss is located on the side wall of the mounting groove and is arranged parallel to the extension direction of the mounting groove, and the graphite absorber is embedded in the mounting groove.

[0009] According to the present invention, a beam blocking device for a high-intensity heavy ion accelerator further includes a water circuit transmission chain assembly for supplying cooling water to the probe assembly; The oxygen-free copper cooler also includes a cooling water channel extending from the clamp plate. One end of the water channel transmission chain assembly is connected to the cooling water channel, and the other end of the water channel transmission chain assembly is connected to the vacuum external assembly.

[0010] According to the present invention, a beam blocking device for a high-intensity heavy ion accelerator is provided, wherein the water-path transmission chain assembly includes a metal drag chain and a stainless steel metal hose. One end of the metal cable chain is fixed to the probe assembly, and the other end of the metal cable chain is fixed to the vacuum support assembly; The stainless steel flexible metal hose is inserted into the metal cable chain. One end of the stainless steel flexible metal hose is connected to the cooling water circuit, and the other end of the stainless steel flexible metal hose is connected to the vacuum external assembly.

[0011] According to the present invention, a beam blocking device for a high-intensity heavy ion accelerator is provided, wherein the vacuum inner support assembly includes a shielding iron support and a moving support, the shielding iron support extends in a vertical direction, the upper end of the shielding iron support is connected to the vacuum outer assembly, and the lower end of the shielding iron support is connected to the moving support. The motion support is provided with a base plate, and the probe assembly is movably mounted on the base plate.

[0012] According to the present invention, a beam blocking device for a high-intensity heavy ion accelerator is provided, wherein the vacuum motion component includes a vacuum rotation transmission component, a bevel gear transmission component, and a probe horizontal motion component; The vacuum internal rotation transmission component is vertically mounted on the shielding iron support, and the probe horizontal movement component is horizontally mounted on the base plate; The upper end of the vacuum-in-the-vacuum rotary transmission component is connected to the magnetohydrodynamic sealed vacuum transmission device, the lower end of the vacuum-in-the-vacuum rotary transmission component is connected to the bevel gear transmission component, and one end of the probe horizontal movement component is connected to the bevel gear transmission component. The motion is transmitted to the probe assembly through the vacuum-in-the-vacuum movement component.

[0013] According to the present invention, a beam blocking device for a high-intensity heavy ion accelerator is provided, wherein the vacuum rotary transmission component includes a short transmission rod, a long transmission rod, a coupling, a first bearing seat, and a second bearing seat; the first bearing seat is mounted on the base plate and is used to pass through the short transmission rod; the second bearing seat is mounted on the shielding iron support and is used to pass through the long transmission rod. The long transmission rod, the coupling, and the short transmission rod are connected in series from top to bottom.

[0014] According to the present invention, a beam blocking device for a high-intensity heavy ion accelerator is provided, wherein the bevel gear transmission component includes a first bevel gear disposed on the horizontal movement component of the probe and a second bevel gear disposed on the short transmission rod.

[0015] According to the present invention, a beam blocking device for a high-intensity heavy ion accelerator is provided, wherein the horizontal movement component of the probe includes a guide rail structure mounted on the base plate and a ball screw pair for driving the movement of the probe assembly.

[0016] According to the present invention, a beam blocking device for a high-intensity heavy ion accelerator is provided, wherein two guide rail structures are arranged in parallel and spaced apart on both sides of the ball screw pair, the probe assembly is connected to the slider of the guide rail structure, and the ball screw pair is threadedly connected to the probe assembly.

[0017] The above-described one or more technical solutions of this invention have at least one of the following technical effects: 1. In this invention, the probe assembly, by setting wedge-shaped grooves and wedge-shaped protrusions, greatly increases the contact area between the graphite absorber and the oxygen-free copper cooler, improving the cooling efficiency of the graphite absorber and enabling it to withstand higher beam power in continuous beam conditions. Furthermore, the wedge-shaped connection between the graphite absorber and the oxygen-free copper cooler avoids the need for opening holes in the graphite absorber, solving the problem of difficult hole opening due to the low hardness of graphite.

[0018] 2. In this invention, the anti-radiation motor transmits rotation to the horizontal movement component of the probe through a long transmission rod, which enables the anti-radiation motor to be kept away from the radiation source and improves the service life of the anti-radiation motor.

[0019] 3. By setting a metal drag chain, the present invention ensures that the stainless steel flexible tube can maintain a safe bending radius during the reciprocating motion of the probe assembly, avoids bending and damage of the stainless steel flexible tube, improves the safety and stability of the water circuit transmission chain assembly, and greatly reduces the number of maintenance times of the beam blocking device.

[0020] In addition to the technical problems solved by the present invention, the technical features of the technical solutions constituted by the present invention, and the advantages brought about by the technical features of these technical solutions as described above, other technical features of the present invention and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings, or will be learned through the practice of the present invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the beam blocking device provided in an embodiment of the present invention.

[0023] Figure 2 This is a three-dimensional structural diagram of the probe assembly provided in an embodiment of the present invention.

[0024] Figure 3 This is a three-dimensional structural diagram of a vacuum motion component provided in an embodiment of the present invention.

[0025] Figure 4 This is a three-dimensional structural diagram of the vacuum internal support assembly provided in an embodiment of the present invention.

[0026] Figure 5 A three-dimensional structural schematic diagram of the water transmission chain assembly provided in an embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of the structure of the vacuum external component provided in an embodiment of the present invention.

[0028] Figure label: 1. Probe assembly; 1-1. Oxygen-free copper cooler; 1-2. Graphite absorber; 2. Vacuum internal motion assembly; 2-1. Vacuum internal rotary transmission component; 2-1-1. Short transmission rod; 2-1-2. Long transmission rod; 2-1-3. Coupling; 2-1-4. First bearing seat; 2-1-5. Second bearing seat; 2-2. Bevel gear transmission component; 2-3. Probe horizontal motion component; 2-3-1. Guide rail structure; 2-3-2. Ball screw pair; 3. Vacuum internal support assembly; 3-1. Shielding iron support component; 3-2. Motion support component; 4. Water channel transmission chain assembly; 4-1. Stainless steel flexible metal hose; 4-2. Metal drag chain; 4-3. Water channel welded sealing component; 5. Vacuum external assembly; 5-1. Magnetohydrodynamic sealed vacuum transmission device; 5-2. Radiation-resistant motor; 5-3. Fixed support base; 5-4. Vacuum sealing flange. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0030] like Figures 1 to 6 As shown in the embodiments of the present invention, a beam blocking device for a high-current heavy ion accelerator is introduced.

[0031] The beam blocking device mainly includes a probe assembly 1, an outer vacuum assembly 5, an inner vacuum support assembly 3, and an inner vacuum motion assembly 2.

[0032] Specifically, probe assembly 1 is used to absorb secondary particles. The external vacuum assembly 5 is equipped with a radiation-resistant motor 5-2 and a magnetohydrodynamic sealed vacuum transmission device 5-1, used to externally drive probe assembly 1 to move within the high-intensity heavy ion accelerator. The internal vacuum support assembly 3 is used to fix probe assembly 1 in place.

[0033] One end of the vacuum motion component 2 is connected to the magnetohydrodynamic sealed vacuum transmission device 5-1. The other end of the vacuum motion component 2 is connected to the probe component 1.

[0034] The probe assembly 1 includes an oxygen-free copper cooler 1-1 and a graphite absorber 1-2. The oxygen-free copper cooler 1-1 is equipped with a clamping structure for fixing the graphite absorber 1-2. Figure 2As shown, when the graphite absorber 1-2 is embedded in the oxygen-free copper cooler 1-1, it is wrapped on three sides by the clamping structure.

[0035] The graphite absorber 1-2 has wedge-shaped grooves on its top and bottom surfaces. The clamping structure has wedge-shaped bosses that mate with the wedge-shaped grooves.

[0036] Furthermore, the top and bottom surfaces of the graphite absorber 1-2 are each provided with a plurality of parallel wedge-shaped grooves. Correspondingly, the sidewalls of the clamping structure that contact the top and bottom surfaces of the graphite absorber 1-2 are provided with a plurality of parallel wedge-shaped protrusions. The wedge-shaped protrusions and wedge-shaped grooves are fitted together in a one-to-one correspondence.

[0037] Furthermore, the vacuum motion assembly 2 includes a probe horizontal motion component 2-3, a bevel gear transmission component 2-2, and a vacuum rotation transmission component 2-1.

[0038] The vacuum internal support assembly 3 includes a shielding iron support 3-1 and a moving support 3-2. The shielding iron support 3-1 serves as the main support part, which not only provides support but also shields a certain amount of radiation. The moving support 3-2 is equipped with a probe horizontal movement component 2-3 and a probe assembly 1 to ensure the smoothness and accuracy of the movement of the probe assembly 1.

[0039] The motion support component 3-2 consists of four main support columns, several auxiliary reinforcing support columns, and a base plate with reinforcing ribs. Specifically, both the main support columns and the auxiliary reinforcing support columns are H-beams. The auxiliary reinforcing support columns are diagonally braced between the main support columns and the base plate. This prevents the base plate from bending and deforming when the probe assembly 1 moves to the side away from the support columns.

[0040] Furthermore, the base plate is made of 15mm thick stainless steel. Two 30mm thick and 20mm wide horizontal reinforcing ribs are welded to the back of the base plate. In addition, on the side away from the support column, two longitudinal reinforcing ribs are welded between the two horizontal reinforcing ribs to enhance the rigidity of the base plate.

[0041] In this embodiment, the probe assembly 1, by setting wedge-shaped grooves and wedge-shaped protrusions, greatly increases the contact area between the graphite absorber 1-2 and the oxygen-free copper cooler 1-1, thereby improving the cooling efficiency of the graphite absorber 1-2 and enabling it to withstand higher beam power in continuous beam mode. Furthermore, the wedge-shaped connection between the graphite absorber 1-2 and the oxygen-free copper cooler 1-1 avoids the need for opening holes in the graphite absorber 1-2, solving the problem of difficulty in opening holes due to the low hardness of graphite.

[0042] Based on the above embodiments, another embodiment of the present invention introduces a beam blocking device for a high-current heavy ion accelerator.

[0043] like Figure 2 As shown, the clamping structure includes clamping plates. Two clamping plates are arranged parallel to each other on one side of the oxygen-free copper cooler 1-1, forming a mounting groove that runs through both end faces of the oxygen-free copper cooler 1-1.

[0044] The wedge-shaped boss is located on the side wall of the mounting groove. Furthermore, the wedge-shaped boss is positioned parallel to the extending direction of the mounting groove. The graphite absorbers 1-2 are fixed to the mounting groove through the mating connection of the wedge-shaped groove and the wedge-shaped boss.

[0045] In addition, the top and bottom surfaces of the graphite absorber 1-2 are each provided with a number of parallel wedge-shaped grooves. Correspondingly, the sidewalls of the clamping structure that contact the top and bottom surfaces of the graphite absorber 1-2 are provided with a number of parallel wedge-shaped protrusions. The wedge-shaped protrusions and wedge-shaped grooves fit together in a one-to-one correspondence.

[0046] Preferably, the graphite absorber 1-2 and the oxygen-free copper cooler 1-1 are connected by five wedge-shaped grooves and wedge-shaped bosses, each 30 mm wide, 10 mm high, and 300 mm deep.

[0047] Specifically, the graphite absorbers 1-2 are made from high-density, high-strength graphite blocks. Wedge-shaped grooves are precision-machined into the graphite blocks, with the parallelism of the sides of two adjacent wedge-shaped grooves controlled within 0.2mm. During assembly, the connection accuracy is ensured by using a side-groove fitting method.

[0048] Furthermore, such as Figure 6 As shown, the vacuum external assembly 5 includes a magnetohydrodynamic (MHD) sealed vacuum drive device 5-1, a radiation-resistant motor 5-2, a fixed support 5-3, and a vacuum sealing flange 5-4. The MHD sealed vacuum drive device 5-1 is sealed and fixed to the vacuum sealing flange 5-4. One end of the drive shaft of the MHD sealed vacuum drive device 5-1 is connected to the radiation-resistant motor 5-2 via a coupling 2-1-3. The radiation-resistant motor 5-2 is connected to the outer surface of the vacuum sealing flange 5-4 via the fixed support 5-3.

[0049] In this embodiment, the oxygen-free copper cooler 1-1 and the graphite absorber 1-2 are connected by setting a wedge-shaped groove and a wedge-shaped boss, which increases the contact area between the two, thereby increasing the heat transfer rate and cooling efficiency. It also increases the friction between the two, which can prevent the graphite absorber 1-2 from falling out of the oxygen-free copper cooler 1-1.

[0050] Based on the above embodiments, another embodiment of the present invention introduces a beam blocking device for a high-current heavy ion accelerator.

[0051] like Figure 5 As shown, the beam blocking device also includes a water transmission chain assembly 4, which is used to deliver cooling water to the probe assembly 1.

[0052] The oxygen-free copper cooler 1-1 also includes cooling water channels extending from the clamping plate. One end of the water channel drive chain assembly 4 is connected to the cooling water channels. The other end of the water channel drive chain assembly 4 is connected to the vacuum external assembly 5.

[0053] Furthermore, square cooling water channels with a side length of 16mm are opened in the upper and lower clamping plates that are in contact with the oxygen-free copper cooler 1-1 and the graphite absorber 1-2, for transporting cooling water to perform water cooling and heat dissipation on the graphite absorber 1-2.

[0054] When manufacturing the oxygen-free copper cooler 1-1, first process the water tank to form the cooling water channel, then weld the sealing plate to cover the water tank to form the cooling water channel, and finally process the wedge-shaped boss. This ensures the positional and dimensional accuracy of the wedge-shaped boss and prevents the thermal deformation caused by welding from affecting the accuracy of the wedge-shaped boss on the overall oxygen-free copper cooler 1-1.

[0055] Meanwhile, the distance between the two clamping plates of the oxygen-free copper cooler 1-1 is slightly smaller than the height of the graphite absorber 1-2, so that the oxygen-free copper cooler 1-1 and the graphite absorber 1-2 are interference fit, which can ensure the reliability of the connection.

[0056] Based on the above embodiments, another embodiment of the present invention introduces a beam blocking device for a high-current heavy ion accelerator.

[0057] The waterway transmission chain assembly 4 includes a metal drag chain 4-2, a stainless steel metal hose 4-1, and a waterway welded sealing component 4-3.

[0058] One end of the metal cable chain 4-2 is fixed to the probe assembly 1. The other end of the metal cable chain 4-2 is fixed to the vacuum support assembly 3.

[0059] A stainless steel flexible metal hose 4-1 is threaded through the metal cable chain 4-2. One end of the stainless steel flexible metal hose 4-1 is connected to the cooling water circuit. The other end of the stainless steel flexible metal hose 4-1 is connected to the vacuum external assembly 5.

[0060] Specifically, two stainless steel metal hoses 4-1 are used for water inlet and outlet respectively, and can be connected to the cooling water circuit in the oxygen-free copper cooler 1-1 to form a circulation path to cool the probe assembly 1.

[0061] Furthermore, both stainless steel flexible metal hoses 4-1 are threaded through the metal cable chain 4-2. The metal cable chain 4-2 ensures that the stainless steel flexible metal hoses 4-1 move together with the probe assembly 1 with a certain bending radius.

[0062] In addition, the waterway welded sealing component 4-3 includes a sealing flange, a stainless steel rigid pipe welded to the sealing flange, and a vacuum piping assembly. The waterway welded sealing component 4-3 is welded to two stainless steel flexible metal hoses 4-1 in a vacuum to ensure the overall structure's airtightness.

[0063] In this embodiment, by setting a metal drag chain 4-2, it is ensured that the stainless steel metal hose 4-1 can maintain a safe bending radius during the reciprocating motion of the probe assembly 1, avoiding bending and damage of the stainless steel metal hose 4-1, improving the safety and stability of the water circuit transmission chain assembly 4, and greatly reducing the number of maintenance times of the beam blocking device.

[0064] Based on the above embodiments, another embodiment of the present invention introduces a beam blocking device for a high-current heavy ion accelerator.

[0065] like Figure 4 As shown, the vacuum inner support assembly 3 includes a shielding iron support 3-1 and a moving support 3-2. The shielding iron support 3-1 extends vertically. The upper end of the shielding iron support 3-1 is connected to the vacuum outer assembly 5. The lower end of the shielding iron support 3-1 is connected to the moving support 3-2.

[0066] The motion support component 3-2 is equipped with a base plate. The probe assembly 1 is movably mounted on the base plate.

[0067] Based on the above embodiments, another embodiment of the present invention introduces a beam blocking device for a high-current heavy ion accelerator.

[0068] like Figure 3 As shown, the vacuum motion assembly 2 includes a vacuum rotation transmission component 2-1, a bevel gear transmission component 2-2, and a probe horizontal motion component 2-3.

[0069] The vacuum internal rotary transmission component 2-1 is vertically mounted on the shielding iron support component 3-1. The probe horizontal movement component 2-3 is horizontally mounted on the base plate.

[0070] The upper end of the vacuum internal rotary transmission component 2-1 is connected to the magnetohydrodynamic sealed vacuum transmission device 5-1. The lower end of the vacuum internal rotary transmission component 2-1 is connected to the bevel gear transmission component 2-2. One end of the probe horizontal movement component 2-3 is connected to the bevel gear transmission component 2-2, and the movement is transmitted to the probe assembly 1 through the vacuum internal movement component 2.

[0071] Based on the above embodiments, another embodiment of the present invention introduces a beam blocking device for a high-current heavy ion accelerator.

[0072] like Figure 3As shown, the vacuum rotary transmission component 2-1 includes a short transmission rod 2-1-1, a long transmission rod 2-1-2, a coupling 2-1-3, a first bearing seat 2-1-4, and a second bearing seat 2-1-5. The first bearing seat 2-1-4 is mounted on the base plate and is used to pass through the short transmission rod 2-1-1. The second bearing seat 2-1-5 is mounted on the shielding iron support 3-1 and is used to pass through the long transmission rod 2-1-2.

[0073] The long transmission rod 2-1-2, the coupling 2-1-3, and the short transmission rod 2-1-1 are connected in series from top to bottom.

[0074] Furthermore, the bevel gear transmission component 2-2 includes a first bevel gear disposed on the probe horizontal movement component 2-3 and a second bevel gear disposed on the short transmission rod 2-1-1.

[0075] The horizontal movement component 2-3 of the probe includes a guide rail structure 2-3-1 mounted on the base plate and a ball screw pair 2-3-2 for driving the movement of the probe assembly 1.

[0076] Furthermore, two guide rail structures 2-3-1 are arranged parallel to each other on both sides of the ball screw pair 2-3-2. The probe assembly 1 is connected to the slider of the guide rail structure 2-3-1. The ball screw pair 2-3-2 is threadedly connected to the probe assembly 1 and is used to drive the probe assembly 1 to move.

[0077] Specifically, the rotary transmission component 2-1 in the vacuum transmits motion to the horizontal motion component 2-3 of the probe via the bevel gear transmission component 2-2, thereby driving the probe assembly 1 mounted on the base plate to reciprocate. Due to the large overall weight of the probe assembly 1, two parallel guide rail structures 2-3-1 are installed on the base plate to ensure smooth reciprocating motion. Each guide rail structure 2-3-1 includes two high-precision sliders that are slidably connected to the guide rails. Rotating the ball screw pair 2-3-2 drives the probe assembly 1 to move smoothly.

[0078] like Figure 3 As shown, the short transmission rod 2-1-1 is fixed to the vacuum inner support assembly 3 via the first bearing seat 2-1-4. The long transmission rod 2-1-2 is fixed to the shielding iron support 3-1 via the second bearing seat 2-1-5. The bevel gear transmission component 2-2 includes a bevel gear vertically mounted at the end of the ball screw pair 2-3-2 and a bevel gear horizontally mounted on the short transmission rod 2-1-1. The two bevel gears mesh with each other, transmitting the rotation of the radiation-resistant motor 5-2 to the probe horizontal movement component 2-3.

[0079] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "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 the embodiments of the present invention 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 the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0080] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0081] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms are not limited to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A beam blocking device for a high-intensity heavy ion accelerator, characterized in that, include: Probe assembly (1) is used to absorb secondary particles; The vacuum external assembly (5) is equipped with a radiation-resistant motor (5-2) and a magnetohydrodynamic sealed vacuum transmission device (5-1) for externally driving the probe assembly (1) to move in the high-current heavy ion accelerator; Vacuum internal support assembly (3) is used to fix the probe assembly (1); Vacuum motion assembly (2), one end of which is connected to the magnetic fluid sealed vacuum transmission device (5-1), and the other end of which is connected to the probe assembly (1); The probe assembly (1) includes an oxygen-free copper cooler (1-1) and a graphite absorber (1-2), wherein the oxygen-free copper cooler (1-1) is provided with a clamping structure for fixing the graphite absorber (1-2); The graphite absorber (1-2) has wedge-shaped grooves on its top and bottom surfaces, and the clamping structure has wedge-shaped protrusions that cooperate with the wedge-shaped grooves.

2. The beam blocking device for a high-intensity heavy ion accelerator according to claim 1, characterized in that, The clamping structure includes clamping plates, and two clamping plates are arranged in parallel and spaced apart on one side of the oxygen-free copper cooler (1-1) to form a mounting groove that runs through the end faces of both ends of the oxygen-free copper cooler (1-1). The wedge-shaped boss is located on the side wall of the mounting groove and is arranged parallel to the extension direction of the mounting groove. The graphite absorber (1-2) is embedded in the mounting groove.

3. The beam blocking device for a high-intensity heavy ion accelerator according to claim 2, characterized in that, It also includes a water-cooled transmission chain assembly (4) for supplying cooling water to the probe assembly (1); The oxygen-free copper cooler (1-1) also includes a cooling water channel extending from the clamp plate. One end of the water channel transmission chain assembly (4) is connected to the cooling water channel, and the other end of the water channel transmission chain assembly (4) is connected to the vacuum external assembly (5).

4. The beam blocking device for a high-intensity heavy ion accelerator according to claim 3, characterized in that, The waterway transmission chain assembly (4) includes a metal drag chain (4-2) and a stainless steel metal hose (4-1). One end of the metal drag chain (4-2) is fixed to the probe assembly (1), and the other end of the metal drag chain (4-2) is fixed to the vacuum support assembly (3). The stainless steel metal hose (4-1) is inserted into the metal drag chain (4-2). One end of the stainless steel metal hose (4-1) is connected to the cooling water circuit, and the other end of the stainless steel metal hose (4-1) is connected to the vacuum external assembly (5).

5. The beam blocking device for a high-intensity heavy ion accelerator according to any one of claims 1 to 4, characterized in that, The vacuum inner support assembly (3) includes a shielding iron support (3-1) and a moving support (3-2). The shielding iron support (3-1) extends vertically. The upper end of the shielding iron support (3-1) is connected to the vacuum outer assembly (5), and the lower end of the shielding iron support (3-1) is connected to the moving support (3-2). The motion support (3-2) is provided with a base plate, and the probe assembly (1) is movably mounted on the base plate.

6. The beam blocking device for a high-intensity heavy ion accelerator according to claim 5, characterized in that, The vacuum motion assembly (2) includes a vacuum rotation transmission component (2-1), a bevel gear transmission component (2-2), and a probe horizontal motion component (2-3). The vacuum internal rotation transmission component (2-1) is vertically mounted on the shielding iron support (3-1), and the probe horizontal movement component (2-3) is horizontally mounted on the base plate; The upper end of the vacuum internal rotary transmission component (2-1) is connected to the magnetohydrodynamic sealed vacuum transmission device (5-1), the lower end of the vacuum internal rotary transmission component (2-1) is connected to the bevel gear transmission component (2-2), and one end of the probe horizontal movement component (2-3) is connected to the bevel gear transmission component (2-2). The motion is transmitted to the probe assembly (1) through the vacuum internal movement component (2).

7. The beam blocking device for a high-intensity heavy ion accelerator according to claim 6, characterized in that, The vacuum rotary transmission component (2-1) includes a short transmission rod (2-1-1), a long transmission rod (2-1-2), a coupling (2-1-3), a first bearing seat (2-1-4), and a second bearing seat (2-1-5). The first bearing seat (2-1-4) is installed on the base plate and is used to pass through the short transmission rod (2-1-1); the second bearing seat (2-1-5) is installed on the shielding iron support (3-1) and is used to pass through the long transmission rod (2-1-2). The long transmission rod (2-1-2), the coupling (2-1-3), and the short transmission rod (2-1-1) are connected in series from top to bottom.

8. The beam blocking device for a high-intensity heavy ion accelerator according to claim 7, characterized in that, The bevel gear transmission component (2-2) includes a first bevel gear disposed on the probe horizontal movement component (2-3) and a second bevel gear disposed on the short transmission rod (2-1-1).

9. The beam blocking device for a high-intensity heavy ion accelerator according to claim 8, characterized in that, The probe horizontal movement component (2-3) includes a guide rail structure (2-3-1) mounted on the base plate and a ball screw pair (2-3-2) for driving the probe assembly (1) to move.

10. The beam blocking device for a high-intensity heavy ion accelerator according to claim 9, characterized in that, Two guide rail structures (2-3-1) are arranged in parallel and spaced apart on both sides of the ball screw pair (2-3-2). The probe assembly (1) is connected to the slider of the guide rail structure (2-3-1), and the ball screw pair (2-3-2) is threadedly connected to the probe assembly (1).

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