An integrated device suitable for use in a small accelerator system

Abstract

This invention discloses an integrated device suitable for small accelerator systems, comprising: an external vacuum chamber with an internal cavity suitable for creating a sealed vacuum environment; an RFQ accelerating cavity disposed within the external vacuum chamber; an SCDTL cavity disposed within the external vacuum chamber downstream of the RFQ accelerating cavity; and adjustment platforms, each located below the RFQ accelerating cavity and the SCDTL cavity, with each platform having degrees of freedom along the length, width, and height of the external vacuum chamber. The adjustment platforms are configured to adjust the positions of the RFQ accelerating cavity and the SCDTL cavity to ensure their beam centers coincide. By placing the various devices in the small accelerator system within the integrated device, each device is no longer considered as a vacuum cavity; instead, they are treated as assemblies placed within the integrated device. This satisfies the vacuum environment requirements of the accelerator system while reducing the mechanical manufacturing difficulty of each device.

Description

Technical Field

[0001] This invention relates to the field of particle linear accelerator technology, and in particular to an integrated device suitable for small accelerator systems. Background Technology

[0002] To ensure the operation of accelerator beamlines, vacuum systems are typically used to maintain the vacuum environment of the accelerator. Conventional accelerator beamline vacuum systems mainly consist of vacuum pipes installed between various devices, or each device is designed as an independent vacuum chamber connected by vacuum flanges. This type of vacuum system is relatively large, occupying a significant amount of space within the accelerator beamline.

[0003] For miniaturized accelerator systems, the size of each device is already small. If each device is manufactured as an independent vacuum chamber, it will increase the difficulty of processing, assembling, and welding each device. Furthermore, considering the miniaturization of accelerators, conventional vacuum systems are too large to meet the vacuum environment requirements of miniaturized accelerators. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides an integrated device suitable for small accelerator systems, which aims to place the various devices in the small accelerator system within the integrated device. The individual devices are no longer considered as vacuum chambers, but are simply placed as assemblies within the integrated device, thereby meeting the vacuum environment requirements of the accelerator system while reducing the mechanical manufacturing difficulty of the individual devices.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an integrated device suitable for small accelerator systems, comprising: an external vacuum chamber having a cavity inside suitable for forming a sealed vacuum environment; an RFQ accelerating cavity disposed within the cavity of the external vacuum chamber along the length direction of the external vacuum chamber; an SCDTL cavity, at least one of the SCDTL cavities being sequentially disposed within the cavity of the external vacuum chamber downstream of the RFQ accelerating cavity along the length direction of the external vacuum chamber; and an adjustment platform disposed at the lower part of both the RFQ accelerating cavity and the SCDTL cavity, wherein the adjustment platform has degrees of freedom in the length, width, and height directions of the external vacuum chamber, and the adjustment platform is configured to adjust the positions of the RFQ accelerating cavity and the SCDTL cavity thereon so that the beam center of the RFQ accelerating cavity coincides with the beam center of the SCDTL cavity.

[0006] Preferably, the external vacuum chamber of the integrated device is mainly composed of a chamber and a top cover for sealing assembly. The side of the chamber is provided with a vacuum extraction flange, which is suitable for connection with an external vacuum pumping device to form a sealed vacuum environment inside the external vacuum chamber.

[0007] Preferably, the front and rear end faces of the integrated device are provided with vacuum flanges, the input end of the RFQ acceleration chamber is connected to the upstream device through the vacuum flange, and the output end of the last SCDTL chamber is connected to the downstream device through the vacuum flange.

[0008] Preferably, the integrated device further includes an RFQ feed tube connected to the RFQ acceleration cavity, and a feed tube through-wall component is provided on the side of the housing. The feed tube through-wall component is used to connect the RFQ feed tube in the vacuum environment to the RFQ feed tube outside the vacuum environment.

[0009] Preferably, the integrated device further includes an SCDTL waveguide connected to the SCDTL cavity, and a waveguide through-wall component is provided on the side of the housing. The waveguide through-wall component is used to connect the SCDTL waveguide in the vacuum environment to the SCDTL waveguide outside the vacuum environment.

[0010] Preferably, the integrated device further includes several water systems, each of which is connected to the cooling water pipes on the RFQ acceleration chamber and the SCDTL chamber; at the same time, a water pipe through-wall component is provided on the bottom side of the housing, which is used to connect the cooling water pipes inside the vacuum environment to the cooling water pipes outside the vacuum environment.

[0011] Preferably, the integrated device has a target seat provided at an unobstructed position on the inner wall and / or bottom plate of the housing; at the same time, a plurality of collimation target seats are provided on the outer surfaces of the RFQ acceleration cavity and the SCDTL cavity, respectively. The collimation target seats are used to collimate and calibrate the RFQ acceleration cavity and the SCDTL cavity in an atmospheric environment to form calibration data.

[0012] Preferably, the integrated device includes the following: a bottom sealing plate; several adjusting screws disposed on the bottom sealing plate, each adjusting screw having a degree of freedom to move up and down along the height direction of the housing; a support frame horizontally disposed on the upper end of the adjusting screws; a fine-tuning plate slidably disposed on the support frame, and the fine-tuning plate having a degree of freedom to move along the length and width directions of the housing on the support frame; and two cavity fixing frames spaced apart along the length direction of the housing on the fine-tuning plate, the cavity fixing frames being adapted to fix and assemble the RFQ acceleration cavity or SCDTL cavity.

[0013] Preferably, the RFQ acceleration chamber and SCDTL chamber of the integrated device are made of high-purity oxygen-free copper through machining, welding and assembly, and have several vacuum holes machined on them.

[0014] Preferably, the integrated device has several reinforcing ribs unevenly welded to the outer side of the housing, and a reinforcing rib is also welded to the upper surface of the upper end cover.

[0015] The present invention has the following advantages due to the adoption of the above technical solutions:

[0016] 1. The external vacuum chamber provided by the present invention has a compact structure. Within a limited space, the RFQ acceleration cavity and SCDTL cavity are placed in the sealed vacuum environment of the external vacuum chamber. Through the side feed tube through-wall component, waveguide through-wall component and water through-wall component, the power feed tube, waveguide transmission, cooling water and other equipment required by the internal equipment are connected to the corresponding equipment in the atmospheric environment, providing a good vacuum environment for the operation of the equipment.

[0017] 2. This invention places the RFQ accelerator cavity and SCDTL cavity in a vacuum environment and processes several vacuum holes at appropriate locations to facilitate the extraction of vacuum from the cavity. The RFQ accelerator cavity and SCDTL cavity themselves are no longer manufactured as vacuum cavities, which reduces the processing and manufacturing difficulty of the RFQ accelerator cavity and SCDTL cavity and other equipment.

[0018] 3. By adjusting the platform, this invention enables the RFQ accelerating cavity and SCDTL cavity to be fixed, collimated, and assembled in a vacuum environment, ensuring a high degree of overlap between the beam centers of the RFQ accelerating cavity and the SCDTL cavity, and guaranteeing the stable and efficient operation of each device. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. In the drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of an integrated device provided in an embodiment of the present invention;

[0021] Figure 2 This is a top view of the external vacuum chamber provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the RFQ acceleration cavity and the SCDTL cavity provided in an embodiment of the present invention;

[0023] Figure 4 This is a side view of the RFQ acceleration cavity and SCDTL cavity provided in an embodiment of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the RFQ adjustment bracket and water system provided in an embodiment of the present invention.

[0025] Labels for each item in the figure:

[0026] 1-External vacuum chamber; 11-Chamber; 12-Upper end cover; 13-Vacuum extraction flange; 14-Feed pipe through-wall fitting; 15-Waveguide through-wall fitting; 16-Water pipe through-wall fitting; 17-Vacuum flange;

[0027] 2-RFQ accelerating cavity; 3-SCDTL cavity; 4-RFQ feed tube; 5-SCDTL waveguide;

[0028] 6-RFQ adjustment platform; 61-bottom sealing plate; 62-adjusting screw; 63-support frame; 64-fine-tuning plate; 65-cavity fixing frame;

[0029] Waterway system 7. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely 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.

[0031] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "assembly," "setup," and "connection" 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.

[0033] The present invention provides an integrated device suitable for small accelerator systems, comprising: an external vacuum chamber with an internal cavity suitable for creating a sealed vacuum environment; an RFQ accelerating cavity disposed within the external vacuum chamber; an SCDTL cavity disposed within the external vacuum chamber downstream of the RFQ accelerating cavity; and adjustment platforms, each disposed at the lower part of both the RFQ accelerating cavity and the SCDTL cavity, and each adjustment platform having degrees of freedom in the length, width, and height directions along the external vacuum chamber. The adjustment platforms are configured to adjust the positions of the RFQ accelerating cavity and the SCDTL cavity to ensure that their beam centers coincide. By placing the various devices in the small accelerator system within the integrated device, each device is no longer considered as a vacuum cavity; instead, each device is simply placed as an assembly within the integrated device. This satisfies the vacuum environment requirements of the accelerator system while reducing the mechanical manufacturing difficulty of each device.

[0034] The integrated device for small accelerator systems provided by the embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] Please see Figures 1 to 5 The integrated device for a small accelerator system provided in this embodiment includes: an external vacuum chamber 1, which has a cavity suitable for forming a sealed vacuum environment; an RFQ accelerating cavity 2, which is disposed in the cavity of the external vacuum chamber 1 along the length direction of the external vacuum chamber 1; an SCDTL cavity 3, at least one SCDTL cavity 3 being disposed sequentially in the cavity of the external vacuum chamber 1 downstream of the RFQ accelerating cavity 2 along the length direction of the external vacuum chamber 1; and an adjustment platform 6, which is disposed at the lower part of both the RFQ accelerating cavity 2 and the SCDTL cavity 3, and the adjustment platform 6 has degrees of freedom in the length, width, and height directions of the external vacuum chamber 1. The adjustment platform 6 is configured to adjust the position of the RFQ accelerating cavity 2 and the SCDTL cavity 3 on it so that the beam center of the RFQ accelerating cavity 2 coincides with the beam center of the SCDTL cavity 3.

[0036] In the above embodiments, preferably, the external vacuum chamber 1 is mainly assembled by sealing the chamber 11 and the upper cover 12. The side of the chamber 11 is provided with a vacuum extraction flange 13, which is suitable for connecting with an external vacuum pumping device so as to form a sealed vacuum environment inside the external vacuum chamber 1.

[0037] In the above embodiments, preferably, the front and rear end faces of the housing 11 are provided with vacuum flanges 17, the input end of the RFQ acceleration chamber 2 is connected to upstream equipment (such as ion source, low energy transmission line, etc.) through the vacuum flanges 17, and the output end of the last SCDTL chamber 3 is connected to downstream equipment (such as experimental terminal, etc.) through the vacuum flanges 17.

[0038] In the above embodiments, preferably, the integrated device further includes an RFQ feed tube 4 connected to the RFQ acceleration cavity 2, and a feed tube through-wall component 14 is provided on the side of the housing 11. The feed tube through-wall component 14 is used to connect the RFQ feed tube 4 in the vacuum environment and the RFQ feed tube 4 outside the vacuum environment, so as to realize the function of internal power input and external vacuum sealing.

[0039] In the above embodiments, preferably, the integrated device further includes an SCDTL waveguide 5 connected to the SCDTL cavity 3, and a waveguide through-wall component 15 is provided on the side of the housing 11. The waveguide through-wall component 15 is used to connect the SCDTL waveguide 5 inside the vacuum environment and the SCDTL waveguide 5 outside the vacuum environment, so as to realize the function of transmitting waveguide signals internally and sealing the vacuum externally, and at the same time realize the function of connecting the current transmission line inside the vacuum environment to the current transmission line outside the vacuum environment.

[0040] In the above embodiments, preferably, the integrated device further includes several water system 7, each water system 7 being connected to the cooling water pipes on the RFQ acceleration chamber 2 and the SCDTL chamber 3 respectively; at the same time, a water pipe through-wall component 16 is provided on the bottom side of the housing 11, the water pipe through-wall component 16 being used to connect the cooling water pipes inside the vacuum environment and the cooling water pipes outside the vacuum environment, so as to realize the function of connecting the cooling water of each cavity inside the housing 11 with the cooling water outside the vacuum environment.

[0041] In the above embodiments, preferably, to ensure the positional and dimensional accuracy of the RFQ accelerating cavity 2 and the SCDTL cavity 3 within the external vacuum chamber 1, target seats (not shown in the figure) are provided at unobstructed locations such as the inner wall and / or bottom plate of the chamber 11; simultaneously, several collimation target seats are provided on the outer surfaces of the RFQ accelerating cavity 2 and the SCDTL cavity 3, respectively. These collimation target seats are used to collimate and calibrate the RFQ accelerating cavity and the SCDTL cavity 3 in an atmospheric environment to generate calibration data.

[0042] In the above embodiments, preferably, the RFQ adjustment platform 6 includes: a bottom sealing plate 61; adjusting screws 62, a plurality of adjusting screws 62 being disposed on the bottom sealing plate 61, each adjusting screw 62 having a degree of freedom to move up and down along the height direction of the housing 11; a support frame 63, horizontally disposed on the upper end of the adjusting screws 62; a fine-tuning plate 64, slidably disposed on the support frame 63, and the fine-tuning plate 64 having a degree of freedom to move along the length and width directions of the housing 11 on the support frame 63; and a cavity fixing frame 65, two cavity fixing frames 65 being spaced apart on the fine-tuning plate 64 along the length direction of the housing 11, the cavity fixing frames 65 being suitable for fixing and assembling the RFQ acceleration cavity 2 or the SCDTL cavity 3. With the above settings, based on the calibration data of RFQ accelerating cavity 2 and SCDTL cavity 3, and combined with the target seat inside the external vacuum chamber 1, the height position of RFQ cavity 2 and / or SCDTL cavity 3 can be collimated by adjusting screw 62. The front-back and left-right position of RFQ accelerating cavity 2 and / or SCDTL cavity 3 can be collimated by the support frame 63 and fine-tuning plate 64. This ensures that the beam center of RFQ accelerating cavity 2 and the beam center of SCDTL cavity 3 are highly aligned, thus completing the vacuum collimation and assembly of the small accelerator system.

[0043] In the above embodiments, preferably, the RFQ accelerating cavity 2 and the SCDTL cavity 3 are made of high-purity oxygen-free copper through machining, welding and assembly, and have several vacuum holes machined at appropriate positions. This facilitates the extraction of vacuum from the inside of the RFQ accelerating cavity and the SCDTL cavity while the external vacuum chamber 1 is being evacuated. As a result, the RFQ accelerating cavity and the SCDTL cavity themselves are no longer manufactured as vacuum cavities, reducing the processing and manufacturing difficulty of the RFQ accelerating cavity and the SCDTL cavity and other equipment.

[0044] In the above embodiments, preferably, several reinforcing ribs are unevenly welded to the outer surface of the housing 11, and reinforcing ribs are also welded to the upper surface of the upper end cover 12. This arrangement enhances the mechanical strength of the external vacuum housing 1, ensuring minimal deformation of the entire external vacuum housing 1 when operating under vacuum.

[0045] 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. An integrated device suitable for small accelerator systems, characterized in that, include: An external vacuum chamber with an internal cavity suitable for creating a sealed vacuum environment; An RFQ acceleration chamber is disposed within the cavity of the external vacuum chamber along the length of the external vacuum chamber. SCDTL cavity, at least one of the SCDTL cavities is sequentially arranged in the cavity of the external vacuum chamber located downstream of the RFQ acceleration cavity along the length direction of the external vacuum chamber; An adjustment platform is provided at the lower part of both the RFQ accelerating cavity and the SCDTL cavity, and the adjustment platform has degrees of freedom in the length, width and height directions of the external vacuum chamber. The adjustment platform is configured to adjust the position of the RFQ accelerating cavity and the SCDTL cavity on it so that the beam center of the RFQ accelerating cavity coincides with the beam center of the SCDTL cavity. The external vacuum chamber is mainly composed of a chamber and a top cover for sealing assembly. The side of the chamber is provided with a vacuum extraction flange, which is suitable for connection with an external vacuum device to form a sealed vacuum environment inside the external vacuum chamber. The adjustment platform includes: Bottom sealing plate; Adjusting screws, several of which are arranged on the bottom sealing plate, each of which has the freedom to move up and down along the height direction of the housing; The support frame is horizontally positioned at the upper end of the adjusting screw; A fine-tuning plate is slidably mounted on the support frame, and the fine-tuning plate has degrees of freedom to move along the length and width directions of the box on the support frame. Two cavity fixing brackets are spaced apart on the fine-tuning plate along the length of the housing. The cavity fixing brackets are suitable for fixing and assembling the RFQ acceleration cavity or SCDTL cavity.

2. The monolithically integrated device of claim 1, wherein, Vacuum flanges are provided on the front and rear ends of the housing. The input end of the RFQ acceleration chamber is connected to the upstream device through the vacuum flange, and the output end of the last SCDTL chamber is connected to the downstream device through the vacuum flange.

3. The monolithically integrated device of claim 1, wherein, It also includes an RFQ feed tube connected to the RFQ acceleration cavity, and a feed tube through-wall component is provided on the side of the housing. The feed tube through-wall component is used to connect the RFQ feed tube in the vacuum environment to the RFQ feed tube outside the vacuum environment.

4. The monolithically integrated device of claim 1, wherein, It also includes an SCDTL waveguide connected to the SCDTL cavity, and a waveguide through-wall component is provided on the side of the housing. The waveguide through-wall component is used to connect the SCDTL waveguide in the vacuum environment to the SCDTL waveguide outside the vacuum environment.

5. The monolithically integrated device of claim 1, wherein, It also includes several water systems, each of which is connected to the cooling water pipes on the RFQ acceleration chamber and the SCDTL chamber respectively; at the same time, a water pipe through-wall component is provided on the bottom side of the chamber, which is used to connect the cooling water pipes inside the vacuum environment and the cooling water pipes outside the vacuum environment.

6. The monolithically integrated device of claim 1, wherein, A target seat is provided at an unobstructed location on the inner wall and / or bottom plate of the housing; at the same time, several collimation target seats are respectively provided on the outer surface of the RFQ acceleration cavity and the SCDTL cavity. The collimation target seats are used to collimate and calibrate the RFQ acceleration cavity and the SCDTL cavity in an atmospheric environment to generate calibration data.

7. The monolithically integrated device according to any one of claims 1 to 6, wherein The RFQ acceleration chamber and SCDTL chamber are made of high-purity oxygen-free copper through machining, welding and assembly, and have several vacuum holes machined on them.

8. The monolithically integrated device according to any one of claims 1 to 6, wherein Several reinforcing ribs are unevenly welded to the outer side of the box, and reinforcing ribs are also welded to the upper surface of the upper end cover.

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