Beam-current linear integrated accelerating structure

Abstract

The application discloses a beam-linear integrated acceleration structure, which comprises multiple pairs of electrode rods and multiple ring bodies arranged in sequence along the beam motion direction, the axial direction of the ring body is consistent with the beam motion direction, and the through holes of the ring body are arranged corresponding to the beam motion path; two adjacent ring bodies form an acceleration gap; the length direction of the electrode rod is consistent with the beam motion direction; every two pairs of electrode rods are limited in an acceleration gap and are fixedly connected with two adjacent ring bodies respectively; and the two pairs of electrode rods in each acceleration gap are distributed orthogonally; along the beam motion direction, the acceleration stages of the beam-linear integrated acceleration structure are as follows: in a first stage, the electrode rods in each acceleration gap form a transverse focusing quadrupole field; in a second stage, the surface of the electrode rod is modulated with a wave surface; in a third stage, along the beam motion direction, the multiple electrode rods are gradually shortened, and the multiple ring bodies are gradually lengthened; and in a fourth stage, the electrode rods disappear, the multiple ring bodies form multiple complete drift tubes and are gradually lengthened. The application can make the linear acceleration device more compact and efficient.

Description

Technical Field

[0001] This invention relates to the field of beam acceleration device technology, and in particular to an integrated linear beam acceleration structure. Background Technology

[0002] Ion linear accelerators are a commonly used type of linear accelerator. Their key accelerating structures are typically categorized into quadrupole field (RFQ) structures and drift tube (DTL) structures based on their accelerating energies. The differences in their operating principles and modes result in them being two independent and completely different accelerating structures. Furthermore, to achieve matched transmission between RFQ and DTL, a specially designed beamline including several quadrupole magnets and a focusing device is required. These issues hinder the further development and widespread adoption of linear accelerators. To better promote the application of linear accelerators, meet the urgent needs of numerous fields, and fully leverage the advantages of high beam current and good beam quality, a novel multi-ion hybrid RF linear accelerator structure is proposed based on simulation analysis of RF acceleration modes. This structure aims to make linear accelerators more compact and efficient. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this invention is to provide an integrated beam-linear acceleration structure that aims to reduce the length of the cavity structure and significantly improve acceleration efficiency, making the linear acceleration device more compact and efficient.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A linear beam acceleration structure is provided, suitable for accelerating a continuous beam drawn from an ion source, and includes: multiple pairs of electrode rods and multiple rings arranged sequentially along the beam movement direction. The axial direction of the multiple rings is consistent with the beam movement direction, and the through holes of the rings are arranged corresponding to the beam movement path. An acceleration gap is formed between two adjacent rings. The length direction of the electrode rods is consistent with the beam movement direction, and every two pairs of electrode rods are confined within one acceleration gap and are respectively fixed to two adjacent rings. The two pairs of electrode rods in each acceleration gap are orthogonally distributed. The beam linear integrated acceleration structure, along the beam movement direction, consists of the following stages: First stage: The electrode rods within each acceleration gap form a transversely focused quadrupole field; Second stage: The surface of the electrode rods is modulated into a wave shape to generate a longitudinal accelerating electric field; Third stage: Along the beam movement direction, multiple electrode rods gradually shorten, and multiple ring bodies gradually lengthen, so as to simultaneously realize the acceleration functions of the quadrupole field accelerator structure and the drift tube acceleration structure for the beam; Fourth stage: The electrode rods disappear, and multiple ring bodies form multiple complete drift tubes that continue to gradually lengthen.

[0006] According to some embodiments of the present invention, the end of each electrode rod is connected to one end face, the inner circumferential side, or the outer circumferential side of the ring body in the axial direction to achieve the fixed connection between the electrode rod and the ring body.

[0007] According to some embodiments of the present invention, in the third stage, the inner and outer diameters of the plurality of rings also gradually increase.

[0008] According to some embodiments of the present invention, in the second stage, along the beam movement direction, the plurality of electrode rods gradually shorten, the plurality of rings gradually lengthen, and the inner and outer diameters of the plurality of rings gradually increase.

[0009] According to some embodiments of the present invention, an inlet ring is provided at the first end of the first stage. Two pairs of orthogonally distributed electrode rods are connected to the beam inlet end face, the inner circumferential side, or the outer circumferential side of the inlet ring. A pair of opposing electrode rods are connected to the beam outlet end face, the inner circumferential side, or the outer circumferential side of the inlet ring.

[0010] According to some embodiments of the present invention, the ring body is configured as a circular ring or a square ring.

[0011] According to some embodiments of the present invention, the beam linear integrated acceleration structure has a cavity and further includes a plurality of support rods, wherein the outer peripheral surface of each ring is connected to the inner wall of the cavity through at least one of the support rods.

[0012] According to some embodiments of the present invention, the length direction of the support rod is consistent with the radial direction of the ring body.

[0013] According to some embodiments of the present invention, each of the ring bodies is connected to a support rod, and the support rods connected to each of the ring bodies are arranged alternately at 180° in a cross section along the beam movement direction.

[0014] According to some embodiments of the present invention, each of the rings is connected to a support rod on its opposite sides, and the support rods connected to each of the rings are arranged alternately at 90° in the cross section along the direction of beam movement.

[0015] Because the present invention adopts the above technical solution, it has at least the following advantages:

[0016] I. In the beam linear integrated acceleration structure provided by this invention, in the first stage, a transverse focusing quadrupole field is formed by the electrode rod to focus the particles; in the second stage, a longitudinal accelerating electric field is generated by modulating the wavy surface of the electrode rod to achieve both transverse focusing and gradual capture and acceleration of particles in the longitudinal direction; in the third stage, the electrode rod is gradually shortened and the ring body is gradually lengthened, thus combining the acceleration functions of a quadrupole accelerator structure and a drift tube acceleration structure; in the fourth stage, the electrode rod disappears, and the longitudinal electric field formed between multiple gradually lengthening complete drift tubes continuously accelerates the beam to achieve the final design energy. That is, this invention can realize the acceleration functions of a quadrupole accelerator structure and a drift tube acceleration structure within a single structural cavity.

[0017] Second, from the first stage through the second and third stages to the fourth stage, the beam is focused and gradually accelerated until it reaches the final designed energy. The entire acceleration process is continuous. Compared with the quadrupole accelerator structure and drift tube acceleration structure that are independently set up and connected by beam transport lines in related technologies, the present invention has a compact structure and can effectively shorten the cavity structure length of the acceleration structure.

[0018] Third, due to the alternating arrangement of the ring body and electrode rods, and the progression of the first, second, third and fourth stages through the size changes of the ring body and electrode rods, the integrated linear beam acceleration structure can be made more compact while ensuring that it has both the acceleration functions of a quadrupole field and a drift tube.

[0019] Fourth, in the first, second, and third stages, beam capture, focusing, and acceleration can be completed within a very short range; in the previous stages, the beam is continuously accelerated and rapidly increased to sufficient energy; in the fourth stage, the beam is continuously accelerated through multiple continuously lengthening drift tubes to further obtain the final designed beam energy, while significantly improving the quality of the final extracted beam; furthermore, due to sufficiently efficient acceleration, the cavity structure length of the acceleration structure can be effectively shortened.

[0020] Fifth, by integrating the original two independent quadrupole accelerator structures and drift tube accelerator structures into a mutually compatible manner, and by omitting the complex design of the original medium-energy beam matching section, the length of the beam linear accelerator is reduced, thereby greatly reducing the cost of the accelerator and its operation and maintenance expenses. Attached Figure Description

[0021] Figure 1 These are schematic diagrams of the integrated beam linear acceleration structure according to some embodiments of the present invention;

[0022] Figure 2This is a schematic diagram of the ring, electrode rod, and support rod in the integrated beam linear acceleration structure of some embodiments of the present invention;

[0023] Figure 3 This is a schematic diagram of the ring and support rod in the beam linear integrated acceleration structure of some embodiments of the present invention;

[0024] Figure 4 This is a schematic diagram of the ring and support rod in the beam linear integrated acceleration structure of some embodiments of the present invention.

[0025] Marked in the attached diagram:

[0026] 100 is a ring;

[0027] 110 is the entrance ring;

[0028] 200 represents the electrode rod;

[0029] 300 is the support rod. 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", "front", "rear", 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] This invention provides an integrated beam-linear acceleration structure that can be applied to the construction of basic nuclear physics application research platforms, linear injectors for tumor treatment devices, radioactive isotope production, medium- and high-energy ion implanters and chip manufacturing, portable neutron source irradiation devices, and radiation hardening of aerospace components.

[0034] The integrated beam linear acceleration structure provided in the embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] Reference Figures 1 to 4 As shown, the beam linear integrated acceleration structure provided in this embodiment of the invention is suitable for accelerating a continuous beam drawn from an ion source, and includes: multiple pairs of electrode rods 200 and multiple rings 100 arranged sequentially along the beam movement direction. The axial direction of the multiple rings 100 is consistent with the beam movement direction, and the through holes they have are arranged corresponding to the beam movement path. An acceleration gap is formed between two adjacent rings 100. The length direction of each electrode rod 200 is consistent with the beam movement direction, and every two pairs of electrode rods 200 are confined within one acceleration gap and are respectively fixed to two adjacent rings 100. The two pairs of electrode rods 200 in each acceleration gap are orthogonally distributed. The beam linear integrated acceleration structure is sequentially divided into a first stage, a second stage, a third stage, and a fourth stage along the beam movement direction. Specifically, in the first stage: the electrode rods 200 in each acceleration gap form a transversely focused quadrupole field; in the second stage: the surface of the electrode rods 200 is modulated into a wave shape to generate a longitudinal accelerating electric field; in the third stage: along the beam movement direction, multiple electrode rods 200 gradually shorten, and multiple rings 100 gradually lengthen, so as to simultaneously realize the acceleration function of the quadrupole field accelerator structure and the drift tube acceleration structure for the beam; in the fourth stage: the electrode rods 200 disappear, and multiple rings 100 form multiple complete drift tubes and continue to gradually lengthen.

[0036] More specifically, the beam's movement path is along a straight line, and multiple rings 100 are arranged sequentially along the beam axis. A through-hole in the middle of each ring 100 is suitable for the beam to pass through. Four electrode rods 200 within the same acceleration gap are arranged sequentially at 90° intervals along the circumference of each ring 100, with two electrode rods 200 connecting the same ring 100 spaced 180° apart. Optionally, two pairs of electrode rods 200 connected to the two end faces of the same ring 100 are located on the same straight line, corresponding to each other. Further optionally, the two pairs of electrode rods 200 connected to the two end faces of the same ring 100 have the same length. However, this design is not limited to this; in other embodiments, the two pairs of electrode rods 200 connected to the two end faces of the same ring 100 can be staggered by a certain angle, or their lengths can be different.

[0037] In the first stage, the particles are focused by the transversely focusing quadrupole field, which allows them to receive the beam transmitted from upstream over a wide range.

[0038] In the beam-linear integrated acceleration structure of the above embodiment, in the first stage, a transverse focusing quadrupole field is formed by the electrode rod 200 to focus the particles. Understandably, the particles are focused under the action of the transverse focusing quadrupole field, so that the beam transmitted from upstream can be received over a large range.

[0039] In the second stage, a longitudinal accelerating electric field is generated by modulating the surface of the electrode rod 200 into a wave shape to achieve both lateral focusing and gradual capture and acceleration of particles in the longitudinal direction. More specifically, the surface of the electrode rod 200 is gradually modulated from a straight shape into a wave shape, creating a modulated curved surface portion that generates a longitudinal accelerating electric field. In this way, particles are focused under the action of the lateral focusing quadrupole field, and simultaneously accelerated in the longitudinal direction under the action of the curved modulation field.

[0040] In the third stage, the electrode rod 200 is gradually shortened while the ring body 100 is gradually lengthened, combining the acceleration functions of a quadrupole accelerator structure and a drift tube acceleration structure. More specifically, in the first three stages, as the particle energy increases, the electrode rod 200 gradually shortens, while the thickness of the ring body 100 gradually increases to form a drift tube, combining the acceleration functions of a quadrupole accelerator and a drift tube. After a period of acceleration in the third stage, the beam enters the fourth stage.

[0041] In the fourth stage, the electrode rod 200 completely disappears, and the drift tube gradually lengthens and becomes the main acceleration structure. The beam is continuously accelerated through the longitudinal electric field formed between these multiple gradually lengthening complete drift tubes to achieve the final design energy.

[0042] Through the beam-gathering and acceleration processes described in the first, second, third, and fourth stages, this invention can achieve the acceleration functions of both a quadrupole accelerator structure and a drift tube acceleration structure within a single structural cavity.

[0043] It should be noted that from the first stage through the second and third stages to the fourth stage, the beam is focused and gradually accelerated until it reaches the final designed energy. The entire acceleration process is continuous. Compared with the quadrupole accelerator structure and drift tube acceleration structure that are independently set up and connected by beam transport lines in related technologies, the present invention has a compact structure and can effectively shorten the length of the cavity structure of the acceleration structure.

[0044] Because the ring 100 and electrode rod 200 are arranged alternately, and the progression from the first stage to the second stage, the third stage and the fourth stage is achieved by changing the size of the ring 100 and the electrode rod 200, the integrated beam linear acceleration structure can be made more compact while ensuring that it has both the acceleration function of a quadrupole field acceleration structure and a drift tube acceleration function.

[0045] In the first, second, and third stages, this integrated linear beam acceleration structure can capture, focus, and accelerate the beam within a very short range. In the earlier stages, the beam is continuously accelerated and rapidly increased to sufficient energy. In the fourth stage, the beam is continuously accelerated through multiple continuously lengthening drift tubes to further obtain the final designed beam energy, while significantly improving the quality of the final extracted beam. Furthermore, due to its sufficiently efficient acceleration, the length of the acceleration structure's cavity can be effectively shortened.

[0046] Furthermore, by seamlessly integrating the two original independent quadrupole accelerator structures and drift tube accelerator structures, and eliminating the complex design of the original intermediate medium-energy beam matching section, the length of the linear accelerator is reduced, thereby significantly decreasing the accelerator's manufacturing cost and maintenance expenses. Taking the linear injector radio frequency structure for medical treatment devices as an example, the integrated linear accelerator structure provided in this embodiment of the invention seamlessly integrates the original two independent accelerator structures, RFQ and DTL, and eliminates the complex design of the original intermediate medium-energy beam matching section, reducing the linear accelerator's length and significantly decreasing the accelerator's manufacturing cost and maintenance expenses. This improves the stability of the accelerator system and simultaneously enhances the economic efficiency of high-end precision radiotherapy devices.

[0047] Optionally, in some embodiments, the ends of each electrode rod 200 are connected to one end face, the inner circumferential side, or the outer circumferential side of the ring body 100 in the axial direction to achieve a fixed connection between the electrode rod 200 and the ring body 100.

[0048] Preferably, the ends of each electrode rod 200 are connected to one end face of the ring body 100 along the axial direction, which makes the beam linear integrated acceleration structure provided by the present invention more compact in the circumferential direction.

[0049] Optionally, in some embodiments, in the third stage, the inner and outer diameters of the plurality of rings 100 are also gradually increased, that is, as the rings 100 gradually become longer, the inner and outer diameters of the rings 100 are also adaptively adjusted.

[0050] Optionally, in some embodiments, in the second stage, along the beam movement direction, the plurality of electrode rods 200 gradually shorten, the plurality of rings 100 gradually lengthen, and the inner and outer diameters of the plurality of rings 100 gradually increase.

[0051] Optionally, refer to Figure 1 and Figure 2 As shown, in some embodiments, in the first stage, multiple electrode rods 200 gradually shorten and multiple rings 100 gradually lengthen along the beam movement direction. That is, in the first stage, the dimensions of the electrode rods 200 and rings 100 gradually change to achieve the purpose of adjusting the beam acceleration. However, this design is not limited to this. In other embodiments, in the first stage, each electrode rod 200 and / or each ring 100 may remain partially unchanged along the beam movement direction, or: only some adjacent electrode rods 200 may gradually shorten, and / or only some adjacent rings 100 may gradually lengthen. The specific arrangement can be adjusted according to actual needs.

[0052] Optionally, refer to Figure 1 and Figure 2 As shown, in some embodiments, in the second stage, along the beam movement direction, the multiple electrode rods 200 continue to gradually shorten, and the multiple rings 100 continue to gradually lengthen. That is, in the second stage, the dimensions of the electrode rods 200 and the rings 100 continue to gradually change based on the first stage to further adjust the beam acceleration. However, this design is not limited to this. In other embodiments, in the second stage, each electrode rod 200 and / or each ring 100 may remain partially unchanged along the beam movement direction, or: only some adjacent electrode rods 200 may gradually shorten, and / or only some adjacent rings 100 may gradually lengthen. The specific arrangement can be adjusted according to actual needs.

[0053] It should be noted that when the dimensions of each electrode rod 200 and each ring body 100 gradually change in the first and second stages, it is preferably defined that: the dimension of the subsequent ring body 100 along the beam movement direction is greater than or equal to the dimension of the preceding ring body 100 along the beam movement direction, and the dimension of the subsequent electrode rod 200 along the beam movement direction is less than or equal to the dimension of the preceding electrode rod 200 along the beam movement direction.

[0054] Optionally, refer to Figure 1 As shown, in some embodiments, an inlet ring 110 is provided at the beginning of the first stage. Two pairs of orthogonally distributed electrode rods 200 are connected to the beam inlet end face, the inner circumferential side, or the outer circumferential side of the inlet ring 110. A pair of opposing electrode rods 200 are connected to the beam outlet end face, the inner circumferential side, or the outer circumferential side of the inlet ring 110. In this way, a quadrupole accelerator structure can be formed at the beginning of the first stage.

[0055] Preferably, the beam inlet end face of the inlet ring 110 is connected to the two pairs of orthogonally distributed electrode rods 200, and the beam outlet end face of the inlet ring 110 is connected to the pair of opposing electrode rods 200. This makes the integrated linear beam acceleration structure provided by the present invention more compact in the circumferential direction.

[0056] Without loss of generality, refer to Figures 1 to 4 As shown, in some embodiments, the ring 100 is configured as a circular ring or a square ring. However, the design is not limited to this, and in other embodiments, the ring 100 may also be configured as a ring 100 of other shapes.

[0057] Without loss of generality, refer to Figures 1 to 4 As shown, in some embodiments, the integrated beam linear acceleration structure has a cavity and also includes multiple support rods 300, with the outer peripheral surface of each ring 100 connected to the inner wall of the cavity via at least one support rod 300. The support rods 300 are used to fix the ring 100 and the electrode rods 200 in place.

[0058] It is worth noting that, in addition to fixing the electrode rod 200 and forming the drift tube acceleration structure, the ring 100 is also connected to the support rod 300 to provide a mounting support point.

[0059] Furthermore, referring to Figures 1 to 4 As shown, in some embodiments, the length direction of the support rod 300 is aligned with the radial direction of the ring 100. Thus, as a preferred arrangement, the support rods 300 extend radially outwards and connect to each other along the inner wall of the cavity.

[0060] Optionally, refer to Figures 1 to 4 As shown, in some embodiments, each ring 100 is connected to a support rod 300, and the support rods 300 connected to each ring 100 are arranged alternately at 180° intervals in the cross-section along the beam movement direction. For example, as... Figure 3 As shown, multiple support rods 300 fix each ring 100 on the upper and lower sides respectively. This staggered arrangement of multiple support rods 300 can avoid them being too close to each other, which would be inconvenient for installation and would affect the accuracy of the installation of the ring 100 and electrode rod 200, especially when the front ring 100 is small and densely packed along the beam movement direction.

[0061] Optionally, in some embodiments, a support rod 300 is connected to each opposite side of each ring 100, and the support rods 300 connected to each ring 100 are arranged alternately at 90° intervals in the cross-section along the beam movement direction. For example, as... Figure 4As shown, each pair of support rods 300 serves to fix the ring 100 on the upper and lower sides, or on the left and right sides. Understandably, using two support rods 300 to fix one ring 100 ensures sufficient stability, especially as the rings 100 gradually lengthen in subsequent positions. The staggered arrangement of the support rods 300 connecting adjacent rings 100 avoids them being too close together, which would hinder installation and affect the accuracy of installing the rings 100 and electrode rods 200, particularly when the preceding rings 100 are small and densely packed along the beam movement direction.

[0062] 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 linac integrated accelerator structure, characterized by, Suitable for accelerating continuous beam current extracted from an ion source, and comprising: a plurality of pairs of electrode rods and a plurality of ring bodies arranged in sequence along the direction of beam movement, the plurality of ring bodies have axial directions consistent with the direction of beam movement and have through holes corresponding to the beam movement path, an acceleration gap is formed between adjacent two ring bodies, the length direction of each of the electrode rods is consistent with the direction of beam movement, each two pairs of electrode rods are defined in one acceleration gap and are respectively fixed with two adjacent ring bodies, and the two pairs of electrode rods in each acceleration gap are orthogonally distributed; wherein, along the direction of beam movement, the acceleration stages of the beam linear integrated acceleration structure are sequentially: a first stage: the electrode rods in each acceleration gap form a transverse focusing quadrupole field; a second stage: the surface of the electrode rods is modulated into a wave shape to generate a longitudinal acceleration electric field; a third stage: along the direction of beam movement, a plurality of electrode rods gradually shorten, and a plurality of ring bodies gradually lengthen to have the function of a drift tube acceleration structure, thereby simultaneously realizing the acceleration function of the quadrupole field accelerator structure and the drift tube acceleration structure on the beam; a fourth stage: the electrode rods disappear, a plurality of ring bodies form a plurality of complete drift tubes, and continue to gradually lengthen to gradually enhance the drift tube acceleration structure function on the beam.

2. The beam linear integrated acceleration structure according to claim 1, wherein: the end of each electrode rod is connected to one end surface, inner peripheral surface or outer peripheral surface of the ring body axial direction to realize the fixed connection of the electrode rod and the ring body.

3. The beam linear integrated acceleration structure according to claim 1, wherein: in the third stage, the inner diameter and outer diameter of the plurality of ring bodies also gradually increase.

4. The beam linear integrated acceleration structure according to claim 1, wherein: in the second stage, along the direction of beam movement, a plurality of electrode rods gradually shorten, a plurality of ring bodies gradually lengthen, and the inner diameter and outer diameter of a plurality of ring bodies also gradually increase.

5. The beam linear integrated acceleration structure according to claim 1, wherein: the first stage is provided with an entrance ring body at the head, the beam inlet end surface, inner peripheral surface or outer peripheral surface of the entrance ring body is connected with two pairs of orthogonally distributed electrode rods, and the beam outlet end surface, inner peripheral surface or outer peripheral surface of the entrance ring body is connected with a pair of oppositely arranged electrode rods.

6. The beam linear integrated acceleration structure according to claim 1, wherein: the ring body is configured as a circular ring or a square ring.

7. The beam linear integrated acceleration structure according to any one of claims 1 to 6, wherein: the beam linear integrated acceleration structure has a cavity and further comprises a plurality of support rods, and the outer peripheral surface of each ring body is connected with the inner wall of the cavity through at least one support rod.

8. The beam linear integrated acceleration structure according to claim 7, wherein: the length direction of the support rod is consistent with the radial direction of the ring body.

9. The beam linear integrated acceleration structure according to claim 8, wherein: Each of the ring bodies is connected to one of the support rods, and the support rods to which the ring bodies are connected are alternately arranged in sequence at intervals of 180° in a cross section along a beam motion direction.

10. The linac-Boostr structure of claim 8, wherein, Each of the ring bodies is connected to one of the support rods, and the support rods to which the ring bodies are connected are alternately arranged in sequence at intervals of 180° in a cross section along a beam motion direction.

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