CN116456569A - Beam linear integrated accelerating structure - Google Patents
Beam linear integrated accelerating structure Download PDFInfo
- Publication number
- CN116456569A CN116456569A CN202310569601.3A CN202310569601A CN116456569A CN 116456569 A CN116456569 A CN 116456569A CN 202310569601 A CN202310569601 A CN 202310569601A CN 116456569 A CN116456569 A CN 116456569A
- Authority
- CN
- China
- Prior art keywords
- stage
- ring body
- electrode rods
- gradually
- accelerating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001133 acceleration Effects 0.000 claims abstract description 68
- 230000033001 locomotion Effects 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 230000005684 electric field Effects 0.000 claims description 8
- 238000013461 design Methods 0.000 description 13
- 239000002245 particle Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005658 nuclear physics Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000001959 radiotherapy Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H9/00—Linear accelerators
- H05H9/04—Standing-wave linear accelerators
- H05H9/041—Hadron LINACS
- H05H9/042—Drift tube LINACS
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/22—Details of linear accelerators, e.g. drift tubes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H9/00—Linear accelerators
- H05H9/04—Standing-wave linear accelerators
- H05H9/041—Hadron LINACS
- H05H9/045—Radio frequency quadrupoles
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/22—Details of linear accelerators, e.g. drift tubes
- H05H2007/222—Details of linear accelerators, e.g. drift tubes drift tubes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Particle Accelerators (AREA)
Abstract
The invention discloses a beam linear integrated accelerating structure, which comprises a plurality of pairs of electrode rods and a plurality of ring bodies which are sequentially distributed along the beam moving direction, wherein the axial direction of each ring body is consistent with the beam moving direction, a through hole of each ring body is arranged corresponding to the beam moving path, two adjacent ring bodies form an accelerating gap, the length direction of each electrode rod is consistent with the beam moving direction, each two pairs of electrode rods are limited in one accelerating gap and are fixedly connected with two adjacent ring bodies respectively, and the two pairs of electrode rods in each accelerating gap are orthogonally distributed; along the beam movement direction, the acceleration stages of the beam linear integrated acceleration structure are as follows: the first stage: electrode rods in each acceleration gap form a transverse focusing quadrupole field; and a second stage: modulating a wave curved surface on the surface of the electrode rod; and a third stage: along the beam moving direction, the electrode rods are shortened gradually, and the ring bodies are lengthened gradually; fourth stage: the electrode rod disappears, and the plurality of ring bodies form a plurality of complete drift tubes and are gradually lengthened. The invention can make the linear accelerator more compact and efficient.
Description
Technical Field
The invention relates to the technical field of beam acceleration devices, in particular to a beam linear integrated acceleration structure.
Background
Ion linacs are a common type of linac, whose critical acceleration structures are generally divided into quadrupole field accelerator (RFQ) structures and Drift Tube (DTL) acceleration structures, depending on the acceleration energy. The difference in the principle of operation and the mode of operation results in that they are two independent, completely different acceleration structures. And in order to realize the matching transmission between the RFQ and the DTL, a beam line comprising a plurality of quadrupole magnets and a beam focusing device is required to be specially designed. These problems are all barriers to further development and popularization of linear accelerators. In order to better popularize and apply the linear acceleration, meet urgent demands in various fields, fully exert the advantages of strong beam and good beam quality of the linear accelerator, and need to be based on simulation analysis and research on a radio frequency acceleration mode, a multi-ion novel hybrid radio frequency linear acceleration structure is provided so as to enable the linear acceleration to be more compact and efficient.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a beam-to-line integrated acceleration structure, which aims to reduce the structural length of a cavity, and greatly improve the acceleration efficiency, so that a linear acceleration device becomes more compact and efficient.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a beam-rectilinear integrated acceleration structure adapted to accelerate a continuous beam directed from an ion source, and comprising: the electrode rods are limited in one acceleration gap and are fixedly connected with two adjacent ring bodies respectively, and the two pairs of electrode rods in each acceleration gap are orthogonally distributed; along the beam movement direction, the acceleration stages of the beam linear integrated acceleration structure are as follows: the first stage: the electrode rods in each acceleration gap form a transverse focusing quadrupole field; and a second stage: the surface of the electrode rod is modulated into a wave shape to generate a longitudinal accelerating electric field; and a third stage: along the beam moving direction, the electrode rods are gradually shortened, and the ring bodies are gradually lengthened to have the function of a drift tube accelerating structure, so that the accelerating functions of a quadrupole field accelerator structure and the drift tube accelerating structure are simultaneously realized for the beam; fourth stage: the electrode rods disappear, a plurality of ring bodies form a plurality of complete drift tubes and continue to gradually grow to gradually enhance the function of the drift tube acceleration structure of the beam.
According to some embodiments of the invention, the end of each electrode rod is connected to one end face, the inner peripheral face or the outer peripheral face of the ring body in the axial direction so as to realize the fixation of the electrode rod and the ring body.
According to some embodiments of the invention, at the third stage, the inner and outer diameters of the plurality of rings also increase gradually.
According to some embodiments of the invention, in the second stage, along the beam moving direction, the electrode rods are gradually shortened, the ring bodies are gradually lengthened, and the inner diameters and the outer diameters of the ring bodies are also gradually increased.
According to some embodiments of the invention, the head end of the first stage is provided with an inlet ring body, the beam inlet end face, the inner peripheral face or the outer peripheral face of the inlet ring body is connected with two pairs of orthogonally distributed electrode rods, and the beam outlet end face, the inner peripheral face or the outer peripheral face of the inlet ring body is connected with a pair of oppositely arranged electrode rods.
According to some embodiments of the invention, the ring body is configured as a circular ring or a square ring.
According to some embodiments of the invention, the beam linear integrated accelerating structure is provided with a cavity and further comprises a plurality of supporting rods, and the outer peripheral surface of each ring body is connected with the inner wall of the cavity through at least one supporting rod.
According to some embodiments of the invention, the length direction of the support rod coincides with the radial direction of the ring body.
According to some embodiments of the invention, each ring body is connected with one supporting rod, and the supporting rods connected with each ring body are alternately arranged in turn at intervals of 180 degrees on the cross section along the beam moving direction.
According to some embodiments of the invention, two opposite sides of each ring body are respectively connected with one supporting rod, and the supporting rods connected with each ring body are alternately arranged in sequence at intervals of 90 degrees on the cross section along the beam motion direction.
Due to the adoption of the technical scheme, the invention has at least the following advantages:
1. in the beam linear integrated accelerating structure provided by the invention, in the first stage, a transverse focusing quadrupole field is formed through an electrode rod so as to bunch particles; in the second stage, modulating the wave curved surface by the electrode rod surface to generate a longitudinal accelerating electric field so as to realize transverse beam focusing and simultaneously complete gradual capture and acceleration of particles in the longitudinal direction; in the third stage, the electrode rods are shortened gradually and the ring bodies are lengthened gradually so as to have the function of a drift tube accelerating structure, and the drift tube accelerating structure has the accelerating functions of a quadrupole field accelerator structure and the drift tube accelerating structure; in the fourth stage, the electrode rods disappear, a longitudinal electric field is formed among a plurality of complete drift tubes which are gradually lengthened, and the beam is continuously accelerated to reach the final design energy, namely the invention can realize the accelerating function of a quadrupole field accelerator structure and a drift tube accelerating structure in one structural cavity.
2. The beam current is focused and gradually accelerated from the first stage to the third stage until the final design energy is obtained, the whole acceleration process is continuous and coherent, and compared with a quadrupole field accelerator structure and a drift tube acceleration structure which are independently arranged in the related technology and connected through a beam line, the invention has compact structure and can effectively shorten the cavity structure length of the acceleration structure.
3. The ring body and the electrode rods are alternately arranged, and the first stage, the second stage, the third stage and the fourth stage are progressive through the dimensional change of the ring body and the electrode rods, so that the beam linear integrated accelerating structure is more compact while ensuring the accelerating function of the quadrupole field accelerating structure and the drift tube.
4. In the first stage, the second stage, and the third stage, capturing, focusing, and accelerating of the beam stream can be accomplished in a very short range; in the fourth stage, the beam is continuously accelerated through a plurality of continuous variable-length complete drift tubes, so that the beam with final design energy is further obtained, and meanwhile, the quality of the finally-guided beam can be obviously improved and improved; further, since the acceleration can be made sufficiently efficient, the cavity structure length of the acceleration structure can be effectively shortened.
5. Because the original two independent quadrupole field accelerator structures and the drift tube accelerator structure are mutually matched and fused together, the complex design of the middle original middle energy beam matching section is omitted, and the length of the beam linear accelerator is reduced, so that the manufacturing cost and the operation and maintenance cost of the accelerator are greatly reduced.
Drawings
FIG. 1 is a schematic view of a beam-rectilinear integrated acceleration structure according to some embodiments of the present invention;
FIG. 2 is a schematic view of a ring, an electrode rod, a support rod, etc. in a beam-rectilinear integrated acceleration structure according to some embodiments of the present invention;
FIG. 3 is a schematic view of a ring and a support rod in a beam-rectilinear integrated acceleration structure according to some embodiments of the present invention;
fig. 4 is a schematic structural view of a ring body and a support rod in a beam-current linear integrated acceleration structure according to some embodiments of the present invention.
The reference numerals in the drawings:
100 is a ring body;
110 is an inlet annulus;
200 is an electrode rod;
300 is a support bar.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The embodiment of the invention provides a beam linear integrated accelerating structure which can be applied to the construction of basic nuclear physics application research platforms, the linear injector of a tumor treatment device, the production of radioactive isotopes, the manufacture of a medium-high energy ion implanter and a chip, the radiation resistance reinforcement of a portable neutron source irradiation device and aerospace components, national defense and military industry, national security and other applications.
The following describes in detail the beam-current linear integrated acceleration structure provided by the embodiment of the present invention with reference to the accompanying drawings.
Referring to fig. 1 to 4, a beam-linear integrated acceleration structure according to an embodiment of the present invention is adapted to accelerate a continuous beam extracted from an ion source, and includes: the electrode rods 200 and the ring bodies 100 sequentially distributed along the beam moving direction, the axial directions of the ring bodies 100 are consistent with the beam moving direction, the through holes of the ring bodies 100 are arranged corresponding to the beam moving paths, an accelerating gap is formed between every two adjacent ring bodies 100, the length direction of each electrode rod 200 is consistent with the beam moving direction, each two pairs of electrode rods 200 are limited in one accelerating gap and fixedly connected with two adjacent ring bodies 100 respectively, and the two pairs of electrode rods 200 in each accelerating gap are orthogonally distributed; along the beam motion direction, the acceleration stages of the beam linear integrated acceleration structure are as follows: a first stage, a second stage, a third stage and a fourth stage. Specifically, in the first stage: the electrode rods 200 in each acceleration gap form a transverse focusing quadrupole field; in the second stage: the surface of the electrode rod 200 is modulated into a wave shape to generate a longitudinal accelerating electric field; in the third phase: along the beam moving direction, the electrode rods 200 are gradually shortened, and the ring bodies 100 are gradually lengthened to have the function of a drift tube accelerating structure, so that the accelerating functions of a quadrupole field accelerator structure and the drift tube accelerating structure are simultaneously realized for the beam; in the fourth phase: the electrode rod 200 disappears, and the plurality of rings 100 form a plurality of complete drift tubes and continue to grow gradually to gradually enhance the drift tube acceleration structure function for beam current.
More specifically, the movement path of the beam is in a straight direction, and the plurality of ring bodies 100 are sequentially arranged along the beam axis. The intermediate position of the ring 100 is suitable for the passage of the beam. Four electrode rods 200 within the same accelerating gap are arranged at 90 ° intervals along the circumference Xiang Yici of the ring body 100, wherein two electrode rods 200 connected to the same ring body 100 are spaced 180 ° apart along the circumference of the ring body 100. Alternatively, two pairs of electrode rods 200 connected to two end surfaces of the same ring body 100 are located on the same straight line. Further alternatively, the two pairs of electrode rods 200 connected to the two end surfaces of the same ring body 100 are identical in length. However, the present design is not limited thereto, and in other embodiments, the two pairs of electrode rods 200 respectively connected to the end surfaces of the same ring body 100 may be staggered by a certain angle or may have different lengths.
In the first stage, the particles are beamed under the action of a transverse focusing quadrupole field, so that the beam transmitted from the upstream can be received in a large range.
In the beam-alignment-integrated acceleration structure of the above embodiment, in the first stage, the electrode rod 200 forms a transverse focusing quadrupole field to beam the particles, and it can be understood that the particles are focused under the action of the transverse focusing quadrupole field, so that the beam transmitted from the upstream can be received in a wide range.
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 accomplish gradual capture and acceleration of particles in the longitudinal direction while achieving transverse beam focusing. More specifically, the surface of the electrode rod 200 is gradually modulated from a straight profile to a wavy profile, and the surface of the electrode rod 200 generates a modulated curved surface portion to generate a longitudinal accelerating electric field; thus, the particles are beamed under the action of the transverse focusing quadrupole field, and are accelerated in the longitudinal direction under the action of the curved modulation field.
In the third stage, the electrode rods 200 are shortened gradually and the ring body 100 is lengthened gradually, so that the accelerating function of the quadrupole field accelerator structure and the accelerating function of the drift tube accelerator structure are achieved. More specifically, in the first three stages, as the particle energy increases, the electrode rod 200 becomes shorter and the thickness of the ring body 100 becomes larger to form a drift tube, which has both the quadrupole field accelerator and the drift tube accelerator functions. After one section of acceleration in the third stage, the beam enters the fourth stage.
In the fourth stage, the electrode rod 200 is completely eliminated, and the drift tube is gradually lengthened and becomes a main acceleration structure. The beam is continuously accelerated by the longitudinal electric field formed between the plurality of progressively longer complete drift tubes to achieve the final design energy.
Through the bunching and accelerating actions of the first stage, the second stage, the third stage and the fourth stage, the invention can realize the accelerating functions of the quadrupole field accelerator structure and the drift tube accelerating structure in one structure cavity.
It should be noted that, from the first stage, through the second stage, the third stage and the fourth stage, the beam current is focused and accelerated gradually until the beam current with the final design energy is obtained, the whole acceleration process is continuous and coherent, and compared with the four-pole field accelerator structure and the drift tube acceleration structure which are independently arranged in the related technology and connected through the beam transport line, the invention has compact structure and can effectively shorten the cavity structure length of the acceleration structure.
The ring body 100 and the electrode rod 200 are alternately arranged, and the first stage, the second stage, the third stage and the fourth stage are progressive through the dimensional changes of the ring body 100 and the electrode rod 200, so that the beam linear integrated accelerating structure can be more compact while ensuring the accelerating function of a quadrupole field accelerating structure and a drift tube.
In the first stage, the second stage and the third stage, the beam linear integrated accelerating structure can finish capturing, focusing and accelerating the beam in a very short range; in the fourth stage, the beam is continuously accelerated through a plurality of continuous variable-length complete drift tubes, so that the beam with final design energy is further obtained, and meanwhile, the quality of the finally-guided beam can be obviously improved and improved; further, since the acceleration can be made sufficiently efficient, the cavity structure length of the acceleration structure can be effectively shortened.
Furthermore, the original two independent quadrupole field accelerator structures and the drift tube accelerator structure are mutually matched and fused together, so that the complex design of the middle original middle energy beam matching section is omitted, the length of the beam linear accelerator is reduced, and the manufacturing cost and the operation and maintenance cost of the accelerator are greatly reduced. Taking a linear injector radio frequency structure for a medical treatment device as an example, the beam linear integrated accelerating structure provided by the embodiment of the invention ensures that the original two independent accelerating structures RFQ and DTL are mutually matched and fused together, omits the complex design of the middle original medium-energy beam matching section, reduces the length of the linear accelerator, and greatly reduces the manufacturing cost and the operation and maintenance cost of the accelerator. Thus, the operation stability of the accelerator system can be improved, and the economic benefit of the high-end accurate radiotherapy device can be improved.
Alternatively, in some embodiments, the end of each electrode rod 200 is connected to an axial end surface, an inner circumferential surface, or an outer circumferential surface of the ring body 100 to fix the electrode rod 200 to the ring body 100.
Preferably, the end of each electrode rod 200 is connected to an axial end surface of the ring body 100, so that the beam linear integrated acceleration structure provided by the invention is more compact in the circumferential direction.
Optionally, in some embodiments, in the third stage, the inner and outer diameters of the plurality of rings 100 are also gradually increased, i.e., as the rings 100 are gradually lengthened, the inner and outer diameters of the rings 100 are also adaptively adjusted.
Optionally, in some embodiments, in the second stage, the plurality of electrode rods 200 are gradually shortened, the plurality of ring bodies 100 are gradually lengthened, and the inner diameters and outer diameters of the plurality of ring bodies 100 are also gradually increased along the beam moving direction.
Alternatively, referring to fig. 1 and 2, in some embodiments, in the first stage, the plurality of electrode rods 200 are gradually shortened and the plurality of ring bodies 100 are gradually lengthened along the beam movement direction. That is, in the first stage, the dimensions of the electrode rod 200 and the ring body 100 are gradually changed to achieve the purpose of adjusting the beam acceleration. However, the present design is not limited thereto, and in other embodiments, in the first stage, each electrode rod 200 and/or each ring body 100 may also be partially unchanged along the beam motion direction, or: only a portion of the adjacent electrode rods 200 are gradually shortened and/or only a portion of the adjacent rings 100 are gradually lengthened, and the specific arrangement can be adjusted according to actual needs.
Alternatively, referring to fig. 1 and 2, in some embodiments, in the second stage, the plurality of electrode rods 200 continue to progressively shorten and the plurality of ring bodies 100 continue to progressively lengthen in the beam movement direction. That is, in the second stage, the dimensions of the electrode rod 200 and the ring body 100 continue to be changed gradually on the basis of the first stage to achieve the purpose of further adjusting the beam acceleration. However, the present design is not limited thereto, and in other embodiments, in the second stage, each electrode rod 200 and/or each ring body 100 may also be partially unchanged along the beam motion direction, or: only a portion of the adjacent electrode rods 200 are gradually shortened and/or only a portion of the adjacent rings 100 are gradually lengthened, and the specific arrangement can be adjusted according to actual needs.
It should be noted that, when there is a gradual change in the size of each electrode rod 200 and each ring body 100 in the first stage and the second stage, it is preferably defined that: the dimension of the latter ring body 100 along the beam moving direction is greater than or equal to the dimension of the former ring body 100 along the beam moving direction, and the dimension of the latter electrode rod 200 along the beam moving direction is less than or equal to the dimension of the former electrode rod 200 along the beam moving direction.
Alternatively, referring to fig. 1, in some embodiments, an inlet ring 110 is disposed at the head end of the first stage, two pairs of orthogonally distributed electrode rods 200 are connected to the beam inlet end face, the inner peripheral face or the outer peripheral face of the inlet ring 110, and a pair of oppositely disposed electrode rods 200 are connected to the beam outlet end face, the inner peripheral face or the outer peripheral face of the inlet ring 110. As such, a quadrupolar field accelerator structure may be formed at the head end of the first stage.
Preferably, the beam inlet end face of the inlet ring body 110 is connected to the two pairs of orthogonally distributed electrode rods 200, and the beam outlet end face of the inlet ring body 110 is connected to the pair of oppositely disposed electrode rods 200. Therefore, the beam linear integrated accelerating structure provided by the invention is more compact in the circumferential direction.
Without loss of generality, referring to fig. 1-4, in some embodiments, the ring body 100 is configured as a circular or square ring. However, the present design is not limited thereto, and in other embodiments, the ring body 100 may be configured as a ring body 100 of other shapes.
Referring to fig. 1 to 4 without loss of generality, in some embodiments, the beam-rectilinear integrated acceleration structure has a cavity and further includes a plurality of support rods 300, and an outer circumferential surface of each ring body 100 is connected to an inner wall of the cavity through at least one support rod 300. The support rod 300 is used to realize the fixed arrangement of the ring body 100 and the electrode rod 200.
It should be noted that, in addition to the functions of fixedly disposing the electrode rods 200 and forming the accelerating structure of the drift tube, the ring body 100 is also connected to the support rods 300 to provide a mounting support point.
Further, referring to fig. 1-4, in some embodiments, the length of the support rod 300 coincides with the radial direction of the ring body 100. In this manner, the support rods 300 may be arranged in such a manner that the support rods 300 are sequentially extended and connected in radial directions toward the inner wall of the cavity in the outer circumference direction.
Alternatively, referring to fig. 1 to 4, in some embodiments, each ring body 100 is connected to one support rod 300, and the support rods 300 to which each ring body 100 is connected are alternately arranged in sequence at intervals of 180 ° in a cross section along the beam moving direction. Illustratively, as shown in fig. 3, a plurality of support rods 300 respectively act as a fixing for each ring body 100 on the upper and lower sides. The staggered arrangement of the support rods 300 can avoid inconvenient installation due to too close to each other and influence on the accuracy of the installation of the ring body 100 and the electrode rods 200, especially when the ring body 100 arranged in front has small and dense dimensions along the beam moving direction.
Alternatively, in some embodiments, two opposite sides of each ring body 100 are respectively connected to one support rod 300, and the support rods 300 connected to each ring body 100 are sequentially and alternately arranged at intervals of 90 ° on the cross section along the beam moving direction. Illustratively, as shown in fig. 4, each pair of support rods 300 fixedly acts on the ring body 100 on both upper and lower sides, or fixedly acts on the ring body 100 on both left and right sides. It will be appreciated that the use of two support rods 300 to secure one ring 100 ensures a sufficient degree of stability, particularly when the ring 100 is progressively longer in subsequent positions; the support rods 300 connected with the adjacent ring bodies 100 are staggered, so that the situation that the support rods are too close to each other to be convenient to install and the accuracy of the installation ring bodies 100 and the electrode rods 200 is affected, especially when the size of the ring bodies 100 arranged in front in the beam moving direction is small and dense, can be avoided.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A beam-rectilinear integrated acceleration structure adapted to accelerate a continuous beam directed from an ion source, comprising:
the electrode rods are limited in one acceleration gap and are fixedly connected with two adjacent ring bodies respectively, and the two pairs of electrode rods in each acceleration gap are orthogonally distributed;
along the beam movement direction, the acceleration stages of the beam linear integrated acceleration structure are as follows:
the first stage: the electrode rods in each acceleration gap form a transverse focusing quadrupole field;
and a second stage: the surface of the electrode rod is modulated into a wave shape to generate a longitudinal accelerating electric field;
and a third stage: along the beam moving direction, the electrode rods are gradually shortened, and the ring bodies are gradually lengthened to have the function of a drift tube accelerating structure, so that the accelerating functions of a quadrupole field accelerator structure and the drift tube accelerating structure are simultaneously realized for the beam;
fourth stage: the electrode rods disappear, a plurality of ring bodies form a plurality of complete drift tubes and continue to gradually grow to gradually enhance the function of the drift tube acceleration structure of the beam.
2. The beam-rectilinear integrated acceleration structure according to claim 1, characterized in, that,
the end parts of the electrode rods are connected with one axial end surface, the inner peripheral surface or the outer peripheral surface of the ring body to realize the fixedly connection of the electrode rods and the ring body.
3. The beam-rectilinear integrated acceleration structure according to claim 1, characterized in, that,
in the third stage, the inner diameters and the outer diameters of the plurality of ring bodies are also gradually increased.
4. The beam-rectilinear integrated acceleration structure according to claim 1, characterized in, that,
in the second stage, along the beam moving direction, the electrode rods are gradually shortened, the ring bodies are gradually lengthened, and the inner diameters and the outer diameters of the ring bodies are also gradually increased.
5. The beam-rectilinear integrated acceleration structure according to claim 1, characterized in, that,
the head end of the first stage is provided with an inlet ring body, the end face, the inner peripheral surface or the outer peripheral surface of the beam inlet of the inlet ring body is connected with two pairs of orthogonally distributed electrode rods, and the end face, the inner peripheral surface or the outer peripheral surface of the beam outlet of the inlet ring body is connected with a pair of oppositely arranged electrode rods.
6. The beam-rectilinear integrated acceleration structure according to claim 1, characterized in, that,
the ring body is configured as a circular ring or a square ring.
7. The beam-rectilinear integral acceleration structure according to any of the claims 1-6, characterized in, that,
the beam linear integrated accelerating structure is provided with a cavity and further comprises a plurality of supporting rods, and the outer peripheral surface of each ring body is connected with the inner wall of the cavity through at least one supporting rod.
8. The beam-rectilinear integrated acceleration structure according to claim 7, characterized in,
the length direction of the supporting rod is consistent with the radial direction of the ring body.
9. The beam-rectilinear integrated acceleration structure according to claim 8, characterized in,
each ring body is connected with one supporting rod, and the supporting rods connected with each ring body are alternately arranged in sequence at intervals of 180 degrees on the cross section along the beam motion direction.
10. The beam-rectilinear integrated acceleration structure according to claim 8, characterized in,
the two opposite sides of each ring body are respectively connected with one supporting rod, and the supporting rods connected with each ring body are alternately arranged in sequence at intervals of 90 degrees on the cross section along the beam motion direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310569601.3A CN116456569A (en) | 2023-05-19 | 2023-05-19 | Beam linear integrated accelerating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310569601.3A CN116456569A (en) | 2023-05-19 | 2023-05-19 | Beam linear integrated accelerating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116456569A true CN116456569A (en) | 2023-07-18 |
Family
ID=87122099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310569601.3A Pending CN116456569A (en) | 2023-05-19 | 2023-05-19 | Beam linear integrated accelerating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116456569A (en) |
-
2023
- 2023-05-19 CN CN202310569601.3A patent/CN116456569A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2316157C2 (en) | Linear accelerator for accelerating an ion beam | |
| TWI474762B (en) | Drift tube linear accelerator | |
| RU2462009C1 (en) | Method of changing direction of beam of accelerated charged particles, device for realising said method, electromagnetic radiation source, linear and cyclic charged particle accelerators, collider and means of producing magnetic field generated by current of accelerated charged particles | |
| CN108566721B (en) | Linear accelerator and synchrotron | |
| JPH10233299A (en) | Charged particle beam expander | |
| CN103906339A (en) | Ion accelerator injection device and using method | |
| CN115607858B (en) | Cross rod type radio frequency quadrupole accelerator device | |
| CN114867184B (en) | Compact multi-ion accelerator treatment device and application thereof | |
| US3571734A (en) | Method of production, acceleration and interaction of charged-particle beams and device for the execution of said method | |
| CN104157538A (en) | High-power continuous wave klystron for Tokamak device | |
| US20220254520A1 (en) | Inertial electrostatic confinement fusion facility having inner ion source | |
| JP2008147027A (en) | Multi-beam klystron | |
| CN116456569A (en) | Beam linear integrated accelerating structure | |
| CN115515292B (en) | Proton injector | |
| CN109661096B (en) | Reentrant type intermediate injection accelerator | |
| CN111383873B (en) | Novel adjustable magnetic focusing system suitable for ribbon traveling wave tube | |
| Shang et al. | Design of a sheet beam electron optics system for a 140-GHz traveling wave tube | |
| JP4056448B2 (en) | Multiple beam simultaneous acceleration cavity | |
| CN110416041B (en) | Embedded double-electron-beam terahertz backward wave oscillator | |
| CN216982176U (en) | Alternating phase focusing drift tube accelerator | |
| US7977895B2 (en) | Perturbation device for charged particle circulation system | |
| De Silva | Superconducting Non-Elliptical Cavities (TEM Cavity Designs) | |
| US10672583B1 (en) | Sheet beam electron gun using axially-symmetric spherical cathode | |
| KR101772148B1 (en) | Vacuum electronic device having ion pump | |
| CN117580239A (en) | Ultrahigh frequency linear accelerator for medical isotope production and parameter design method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |