Broadband mixed ion beam irradiation device and method

Abstract

The invention relates to a broadband mixed ion beam irradiation device, and the device comprises a cocktail beam generation and pre-accelerator which is used for generating a mixed cocktail beam and accelerating the mixed cocktail beam; an energy modulator for modulating a hybrid cocktail beam from the cocktail beam generation and the pre-accelerator; the beam transmission line is used for receiving the mixed cocktail beam modulated by the energy modulator; and the high-frequency controller is used for uniformly adjusting the voltage and the phase of the cavity of the energy modulator in a stepping manner and changing the acceleration gradient of the cavity so as to perform periodic energy modulation on the hybrid cocktail beam. The invention further relates to a broadband mixed ion beam irradiation method. Compared with the prior art, the broadband mixed ion beam irradiation method can provide wider irradiation conditions.

Description

Technical Field

[0001] The invention relates to the field of accelerators and high-frequency control, and in particular to a broadband mixed ion beam irradiation device and method, which are used for longitudinal irradiation damage of nuclear energy materials in multi-point variable energy irradiation. Background Art

[0002] Generally, traditional ion beam linear accelerator technology is mainly improved around improving beam intensity, optimizing beam shape, and stabilizing beam supply mode. In terms of innovation in beam supply mode, it is no longer limited to traditional single-beam irradiation technology, but has developed mixed ion beams, especially "cocktail beams" that can simultaneously transmit and accelerate multiple ions. This technology provides a powerful means for the irradiation research of nuclear energy materials. Through cocktail beams, researchers can not only explore the mixed irradiation effects of multiple ions inside nuclear energy materials, but also adjust the energy of different ions to make them gather to the same depth inside the material, thereby forming a lateral synergistic irradiation damage effect within this depth range.

[0003] However, the actual service environment of nuclear energy materials is extremely complex. The damage of materials is not limited to the damage at the transverse level (same depth), but also accompanied by cumulative damage at the longitudinal level (different depths). The research on the transverse level mainly focuses on the microscopic mechanism of irradiation damage, while the damage at the longitudinal level is closely related to the change of mechanical properties of the material. Most of the existing mixed ion irradiation technologies focus on ion beam irradiation with a single energy, or adjust the energy of a few ions to achieve the same penetration depth. This method has significant limitations in simulating longitudinal cumulative damage and is difficult to accurately simulate the real damage behavior of nuclear energy materials in complex service environments. At the same time, the existing single ion beam continuous variable energy irradiation technology is usually implemented by adding an energy modulator in front of the target. It adjusts the energy of the beam through aluminum foils of different thicknesses. When the aluminum foil rotates at a constant speed with the rotator, the beam energy gradually decreases. However, this method has two key problems: first, the energy accuracy of the aluminum foil energy reduction is difficult to guarantee, which may cause uneven energy; second, the cooling system design of the energy modulator is complex and it is difficult to cope with the heat dissipation problem caused by high beam intensity, so only weak current can be used for experiments, which will significantly prolong the irradiation experiment time and affect the experimental efficiency and reliability of the results.

[0004] Therefore, there is an urgent need for a more advanced multi-point energy modulation technology suitable for high-current mixed ion beams, which can realize broadband continuous energy irradiation inside the material. This will provide a more realistic and diverse experimental environment for material damage under complex service conditions, and further study the impact of irradiation behavior on material properties more comprehensively, and provide reliable data support for the design and optimization of future nuclear energy materials. Summary of the invention

[0005] In view of the above problems, an object of the present invention is to provide a multi-ion beam irradiation technology capable of achieving continuously variable energy.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A broadband hybrid ion beam irradiation device, comprising:

[0008] A cocktail beam generator and pre-accelerator, used to generate a mixed cocktail beam and accelerate the mixed cocktail beam;

[0009] an energy modulator for modulating the mixed cocktail beam from the cocktail beam generation and pre-accelerator;

[0010] a beam transmission line receiving the mixed cocktail beam modulated by the energy modulator; and

[0011] The high-frequency controller uniformly adjusts the voltage and phase of the energy modulator cavity in a step-by-step manner, and changes the cavity acceleration gradient to perform periodic energy modulation on the mixed cocktail beam.

[0012] Preferably, the energy modulator is used to continuously change the energy of the mixed cocktail beam within the energy range of 0.3 MeV / u to 1.0 MeV / u, achieving 20 to 30 times of uniform energy step modulation.

[0013] Preferably, the high-frequency controller simulates and automatically optimizes the mixed cocktail beam through synchronization and virtual accelerator technology to achieve real-time feedback regulation.

[0014] Preferably, the broadband hybrid ion beam irradiation device further comprises a beam energy calibrator and a timer, and the high-frequency controller receives parameters from the timer and the beam energy calibrator to perform real-time regulation on the energy modulator.

[0015] Preferably, the timer is used to synchronize the high-frequency controller and the quadrupole magnet power supply in the beam transmission line for regulation, wherein the regulation accuracy of the high-frequency controller is 0.1 kilowatts and 0.1 degrees, and the regulation accuracy of the quadrupole magnet power supply is 0.01 amperes.

[0016] A broadband mixed ion beam irradiation method, comprising:

[0017] generating a mixed cocktail beam through the generation of a cocktail beam and a pre-accelerator, and accelerating the mixed cocktail beam;

[0018] modulating the mixed cocktail beam from the cocktail beam generation and pre-accelerator by an energy modulator; and

[0019] The voltage and phase of the energy modulator cavity are uniformly adjusted step by step through a high-frequency controller to change the cavity acceleration gradient so as to perform periodic energy modulation on the mixed cocktail beam.

[0020] Preferably, a high-frequency controller is used to determine whether the minimum energy point has been reached. If the minimum energy point has not been reached, the process steps to the next energy point, and then the cavity working parameters are adjusted to continue determining whether the energy is accurate. If determined to be accurate, the process is recorded in a database. If determined to be inaccurate, the process returns to continue adjusting the cavity working parameters until the energy is determined to be accurate.

[0021] Preferably, a negative feedback step is also included, and the negative feedback step includes:

[0022] Set the beam energy of the mixed cocktail beam and perform step-by-step modulation on the beam energy;

[0023] The magnetic stiffness of the mixed cocktail beam is calculated and converted into magnet current for magnet modulation of the mixed cocktail beam.

[0024] Preferably, the negative feedback step comprises:

[0025] Setting the beam energy of the mixed cocktail beam and performing step-modulation on the beam energy; and

[0026] The modulation parameters of the high frequency controller are determined and energy modulation is performed to achieve the measurement and correction of the beam energy of the mixed cocktail beam.

[0027] The present invention adopts the above technical solution, which has the following advantages:

[0028] Compared with the existing technology, it can provide a wider range of irradiation conditions, especially it can use mixed ion beams to form longitudinal surfaces of irradiation damage in materials, and study the synergistic effect of mixed ions in materials from a longitudinal perspective. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference numerals are used to represent the same components. In the accompanying drawings:

[0030] Figure 1 is a schematic structural diagram of a broadband hybrid ion beam irradiation device according to an embodiment of the present application;

[0031] Figure 2 is a schematic flow chart of a broadband hybrid ion beam irradiation method according to an embodiment of the present application; and

[0032] Figure 3It is a schematic diagram of the negative feedback control process in the broadband mixed ion beam irradiation method according to an embodiment of the present application.

[0033] The symbols in the accompanying drawings are as follows:

[0034] 1: Cocktail beam generation and pre-accelerator

[0035] 2: Energy modulator

[0036] 3: Beam energy calibrator

[0037] 4: Beam transmission line

[0038] 5: Timer

[0039] 6: High frequency controller

[0040] 7: Database

[0041] S1: Generate cocktail beam

[0042] S2: Transmission and pre-acceleration cocktail bundle

[0043] S3: Determine the energy range and step length

[0044] S4: Set the maximum energy point

[0045] S5: Determine whether the minimum energy point has been reached

[0046] S6: No progress to next energy point

[0047] S7: Extract database

[0048] S8: Start step modulation according to the database parameters

[0049] S9: Adjust the cavity working parameters

[0050] S10: Determine whether the energy is accurate

[0051] S11: Record Database

[0052] S12: Set beam energy

[0053] S13: Energy step modulation

[0054] S14: Calculate beam magnetic stiffness

[0055] S15: Switching magnet current

[0056] S16: Beamline Magnet Modulation

[0057] S17: Determine the modulation parameters of the high-frequency control system

[0058] S18: Energy Modulation

[0059] S19: Energy Measurement and Correction DETAILED DESCRIPTION

[0060] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to be able to fully convey the scope of the present application to those skilled in the art. Hereinafter, although the examples of the present disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0061] The following specific embodiments are provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent after understanding the present disclosure. For example, the order of operations described herein is merely an example, and except for operations that must occur in a specific order, it is not limited to the order set forth herein, but can be changed, which will be apparent after understanding the present disclosure. In addition, for greater clarity and brevity, descriptions of features known in the art may be omitted.

[0062] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent after understanding the present disclosure.

[0063] Throughout the specification, when an element is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present between the element and the other element. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, no other elements may be present between the element and the other element.

[0064] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items; similarly, "at least one" includes any one of the associated listed items and any combination of any two or more items.

[0065] Although terms such as "first", "second" and "third" may be used herein to describe various members, components, regions, layers or portions, these members, components, regions, layers or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer or portion from another member, component, region, layer or portion. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer or first portion mentioned in these examples may also be referred to as the second member, second component, second region, second layer or second portion.

[0066] Spatially relative terms such as "above", "higher", "below", "lower", etc. may be used herein for descriptive convenience to describe the relationship of one element relative to another element as shown in the accompanying drawings. In addition to covering the orientations depicted in the accompanying drawings, these spatially relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is flipped, an element described as being "above" or "higher" relative to another element will be "below" or "lower" relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" covers both orientations of "above" and "below". The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0067] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the terms "a", "an" and "the" are intended to include plural forms as well. The terms "include", "comprise" and "have" indicate the presence of the features, numbers, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements and / or combinations thereof.

[0068] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0069] It should be noted that herein, use of the word “may” with respect to an example, such as regarding what an example may include or implement, means that there is at least one example in which such feature is included or implemented, and all examples are not limited thereto.

[0070] The features of the examples described herein may be combined in various ways that will be apparent after understanding the present disclosure. In addition, although the examples described herein have various configurations, other configurations that will be apparent after understanding the present disclosure are also possible.

[0071] The present invention provides a multi-ion beam irradiation technology that can achieve continuously variable energy based on an energy modulator and a high-frequency feedback control system. It can achieve multiple (20 to 30 times) step energy modulation within an energy range (for example, 0.3MeV / u to 1.0MeV / u), thereby forming longitudinally uniform broadband irradiation damage inside the material.

[0072] At the same time, based on a high-precision timing synchronization system, the energy modulator and the beam transmission line are synchronized to achieve continuous and precise matching of the beam energy and the beam line, thereby reducing beam losses.

[0073] Compared with the existing technology, the broadband mixed ion beam irradiation method can provide a wider range of irradiation conditions. In particular, it can use the mixed ion beam to form a longitudinal surface of irradiation damage in the material, and study the synergistic effect of mixed ions in the material from a longitudinal perspective.

[0074] The present invention further introduces an energy continuous modulation system on the basis of adopting the multi-ion beam cocktail beam technology on the existing linear accelerator to realize multi-point energy modulation.

[0075] By continuously adjusting the beam energy, the penetration depth distribution of ions in the material can be uniformly controlled, thereby producing a broadband damage area inside the material.

[0076] The present invention enables the ion deposition depth in the material to cover a wider range through multiple step adjustments (20 to 30 times), thereby providing a rich basis for mechanical property analysis.

[0077] The present invention proposes a multi-point variable energy irradiation technology based on an accelerator, which is expected to significantly improve the technical and application benefits of research on radiation damage to nuclear energy materials.

[0078] The present invention realizes broadband irradiation from 0.3MeV / u to 1.0MeV / u through multi-ion beam energy modulation, and provides 20 to 30 energy steps, thereby more realistically simulating the irradiation effect of materials under complex service conditions.

[0079] The high-precision timing and synchronization system reduces beam loss in energy modulation and improves the efficiency and stability of the experiment; at the same time, the mixed ion "cocktail beam" technology enhances the ability to study the coordinated irradiation of different ions on materials.

[0080] The present invention will provide a more reliable experimental platform for the study of radiation damage of nuclear energy materials and facilitate the optimization design and development of materials.

[0081] Figure 1 is a schematic structural diagram of a broadband hybrid ion beam irradiation device according to an embodiment of the present application. Figure 1 As shown, the broadband hybrid ion beam irradiation device according to an embodiment of the present application includes: a cocktail beam generator and pre-accelerator 1, an energy modulator 2, a beam energy calibrator 3, a beam transmission line 4, a timer 5, a high-frequency controller 6 and a database 7.

[0082] According to one embodiment of the present application, a broadband hybrid ion beam irradiation device includes:

[0083] A cocktail beam generator and pre-accelerator 1, used to generate a mixed cocktail beam and accelerate the mixed cocktail beam;

[0084] An energy modulator 2 modulates the mixed cocktail beam from the cocktail beam generation and the pre-accelerator 1;

[0085] A beam transmission line 4 receives the mixed cocktail beam modulated by the energy modulator 2; and

[0086] The high frequency controller 6 uniformly adjusts the voltage and phase of the cavity of the energy modulator 2 in a step-by-step manner, and changes the cavity acceleration gradient, so as to perform periodic energy modulation on the mixed cocktail beam.

[0087] Through the energy modulator 2, the mixed cocktail beam is continuously changed in energy range from 0.3 MeV / u to 1.0 MeV / u, achieving 20 to 30 times of uniform energy step modulation.

[0088] The high frequency controller 6 regulates the mixed cocktail beam through synchronization and virtual acceleration to achieve real-time feedback regulation.

[0089] The broadband hybrid ion beam irradiation device further includes a beam energy calibrator 3 and a timer 5 . The high-frequency controller 6 receives parameters from the timer 5 and the beam energy calibrator 3 , and performs real-time regulation on the energy modulator 2 .

[0090] The timer 5 is used to synchronize the high frequency controller 6 and the quadrupole magnet power supply in the beam transmission line 4 for regulation, and the regulation accuracy is 0.01 ampere.

[0091] Generation of cocktail ion beams

[0092] Use a variety of elemental gases or metal vapor generated by high-temperature heating of metals and pass them into an electron cyclotron resonance (ECR) ion source.

[0093] In the transmission line, the transmission and separation of metal vapor is achieved through magnetic focusing magnets and dipole magnets.

[0094] Subsequently, the ions are pre-accelerated by a four-wing radio frequency quadrupole accelerator (RFQ), ultimately producing a traditional cocktail beam of mixed ion transmission.

[0095] Uniform continuous scanning of the mixed beam energy

[0096] Conventional hybrid beam energy control is to perform point-to-point energy shearing through energy increase and decrease devices, which can only study the lateral synergistic damage at a certain depth of the material.

[0097] In order to study longitudinal synergistic damage, especially continuous penetration damage from the near surface of the material to a certain depth, new technologies are needed to uniformly step-control the beam energy.

[0098] A step-by-step high-frequency feedback control system is used to uniformly adjust the cavity voltage and phase in a step-by-step manner, change the cavity acceleration gradient, and thus perform periodic energy modulation on the mixed beam.

[0099] Synchronous negative feedback control of beam transmission line

[0100] In order to reduce the increasing mismatch between the hybrid beam and the back-end beamline due to the continuous change of magnetic stiffness (a physical quantity that describes the resistance of magnetic materials to changes in magnetic field) in the continuously varying energy mode, a method based on high-frequency controller, high-precision synchronization system and virtual accelerator technology is designed to automatically optimize and control the beam to achieve real-time feedback adjustment.

[0101] The high-frequency controller is used to control the high-frequency cavity for implementing energy conversion;

[0102] The high-precision synchronization system is used to synchronize the high-frequency controller 6 and the control of the quadrupole magnet power supply in the rear-end beam transmission line 4, with a control accuracy of about 0.01 ampere.

[0103] Figure 2 is a schematic flow chart of a broadband hybrid ion beam irradiation method according to an embodiment of the present application. Figure 2 As shown, the broadband hybrid ion beam irradiation method process includes:

[0104] S1: Generate cocktail beam

[0105] S2: Transmission and pre-acceleration cocktail bundle

[0106] S3: Determine the energy range and step length

[0107] S4: Set the maximum energy point

[0108] S5: Determine whether the minimum energy point has been reached

[0109] S6: No progress to next energy point

[0110] S7: Extract database

[0111] S8: Start step modulation according to the database parameters

[0112] S9: Adjust the cavity working parameters

[0113] S10: Determine whether the energy is accurate

[0114] S11: Record Database

[0115] According to an embodiment of the present application, the specific steps are as follows:

[0116] Step S1 comprises: generating a mixed cocktail beam flow by means of a “cocktail beam generation and pre-accelerator 1 ” unit.

[0117] Step S2 includes: transmitting and pre-accelerating the mixed cocktail beam through the "cocktail beam generation and pre-accelerator 1" unit.

[0118] Step S3 includes: determining the energy range, that is, determining the penetration depth range of the ions in the target (E k ~E 0 ), and the step size (ΔE) determines the spacing between each energy point (each layer depth of the sample).

[0119] Step S4 includes: after determining the energy range, first adjust the beam energy to the maximum energy point (E k )’s location.

[0120] Step S5 includes: determining whether the minimum energy point (E 0 ).

[0121] Step S6 includes: if S5 is not satisfied, then continue to perform step modulation to the next energy point (E-ΔE).

[0122] Step S7 includes: if S5 is satisfied, extracting the beam energy modulation information stored in "database 7".

[0123] Step S8 includes: reading the content of S7 and sending it to the "high frequency controller 6" to start automatic step modulation according to the predetermined parameters.

[0124] Step S9 includes: adjusting the beam energy by adjusting the parameters (amplitude, phase) of the "energy modulator 2" through the "high frequency controller 6".

[0125] Step S10 includes: judging whether the beam energy is equal to (E-ΔE) according to the "beam energy calibrator 3", and if not, returning to S9 to continue adjusting the cavity parameters.

[0126] Step S11 includes: if the energy requirement is met, the current beam energy and cavity parameters are recorded in the "database 7" and saved.

[0127] According to one embodiment of the present application, a broadband mixed ion beam irradiation method includes:

[0128] Generate a mixed cocktail beam through the generation of the cocktail beam and the pre-accelerator 1, and accelerate the mixed cocktail beam;

[0129] modulating the mixed cocktail beam from the cocktail beam generation and pre-accelerator 1 by the energy modulator 2; and

[0130] The voltage and phase of the cavity of the energy modulator 2 are uniformly adjusted step by step through the high frequency controller 6 to change the cavity acceleration gradient so as to perform periodic energy modulation on the mixed cocktail beam.

[0131] The high-frequency controller 6 determines whether the minimum energy point is reached. If the minimum energy point is not reached, it steps to the next energy point, and then adjusts the cavity working parameters to continue to determine whether the energy is accurate. If it is determined to be accurate, it is recorded in the database. If it is determined to be inaccurate, it returns to continue adjusting the cavity working parameters until it is determined to be accurate.

[0132] Figure 3 is a schematic diagram of a negative feedback control process in a broadband hybrid ion beam irradiation method according to an embodiment of the present application, such as Figure 2 As shown in Figure 2, the negative feedback control process includes:

[0133] S12: Set beam energy

[0134] S13: Energy step modulation

[0135] S14: Calculate beam magnetic stiffness

[0136] S15: Switching magnet current

[0137] S16: Beamline Magnet Modulation

[0138] S17: Determine the modulation parameters of the high-frequency control system

[0139] S18: Energy Modulation

[0140] S19: Energy Measurement and Correction

[0141] According to an embodiment of the present application, the specific steps are as follows:

[0142] S12, S13, S17, S18, S19: i.e. the contents of S1 to S12, which mainly modulate the beam energy in steps by means of preset parameters, cavity control, parameter verification, data recording, and feedback control, and record them in "Database 7" for real-time access.

[0143] Step S14 includes: when the beam energy modulation is completed, automatically calculating the beam magnetic stiffness.

[0144] Step S15 includes: using the magnetic stiffness calculated in S14, the center orbit deflection radius of the magnet and the IB curve obtained by testing the magnet before leaving the factory, automatically calculating the current of the magnet.

[0145] Step S16 includes: calculating the current of the magnet and sending it to the magnet power supply to perform beam line modulation. After the modulation is completed, the next step energy point is modulated.

[0146] According to one embodiment of the present application, a broadband hybrid ion beam irradiation method further includes a negative feedback step, which includes:

[0147] Set the beam energy of the mixed cocktail beam and perform step-by-step modulation on the beam energy;

[0148] The magnetic stiffness of the mixed cocktail beam is calculated and converted into magnet current for magnet modulation of the mixed cocktail beam.

[0149] According to one embodiment of the present application, a broadband hybrid ion beam irradiation method further includes a negative feedback step, which includes:

[0150] Setting the beam energy of the mixed cocktail beam and performing step-modulation on the beam energy; and

[0151] The modulation parameters of the high frequency controller are determined and energy modulation is performed to achieve the measurement and correction of the beam energy of the mixed cocktail beam.

[0152] Multi-point energy modulation

[0153] The core innovation of the present invention is to realize continuous energy variation of the mixed cocktail beam in a wide energy range (for example, 0.3MeV / u to 1.0MeV / u) through an energy modulator, achieving 20 to 30 times of uniform energy step modulation.

[0154] It can generate longitudinal broadband uniform irradiation damage inside the material, which is more advanced than the traditional single energy or a few energy adjustment methods.

[0155] High-precision timing synchronization

[0156] The energy modulator is synchronized with the modulation of each element in the beam transmission line to achieve continuous and accurate matching of the beam energy and the beam line, reduce the loss of the beam during transmission, and improve the irradiation efficiency and the reliability of the experiment.

[0157] High-frequency feedback control system for optimized beam delivery

[0158] The present invention combines a high-frequency feedback control system to achieve precise control of the energy modulator and the beam transmission process.

[0159] Through the feedback mechanism, the beam state is continuously adjusted to make the beam transmission more stable and reliable, and effectively reduce energy dispersion and loss.

[0160] Longitudinal cumulative radiation damage

[0161] The present invention not only focuses on lateral irradiation damage (multi-ion synergistic effect at the same depth), but also studies the cumulative irradiation damage at different depths through multi-point energy modulation technology.

[0162] Through this longitudinal damage analysis, the changes in the mechanical properties of materials can be evaluated more comprehensively, and the actual damage of nuclear energy materials in complex service environments can be simulated.

[0163] Effects of the Invention

[0164] The present invention proposes an accelerator-based multi-point variable energy irradiation technology, which is expected to produce significant technical and application benefits in the study of radiation damage of nuclear energy materials.

[0165] First, this technology can achieve continuous energy variation from 0.3MeV / u to 1.0MeV / u through energy modulation of multiple ion beams, providing 20 to 30 energy steps, thereby forming longitudinally uniform broadband irradiation damage inside the material.

[0166] This innovative variable energy method overcomes the limitations of existing single-energy ion beam technology and can more comprehensively and realistically simulate the cumulative irradiation effects of nuclear materials under complex service conditions.

[0167] Secondly, the present invention realizes precise synchronization between the energy modulator and the beam transmission line through a high-precision timing synchronization system, thereby reducing the beam loss that may be caused during the energy modulation process and significantly improving the efficiency and stability of the irradiation experiment.

[0168] At the same time, this high-frequency feedback control system enables continuous matching of the energy of the beam and the beam line, solving problems in the prior art such as complex design of the energy modulator cooling system and difficulty in coping with high beam intensities.

[0169] In addition, the present invention innovatively introduces the mixed ion "cocktail beam" technology, which allows different ions to form longitudinal surfaces of radiation damage inside the material, effectively improving the research capabilities of multi-particle synergistic radiation effects.

[0170] This not only makes the study of the lateral (same depth) radiation effects of materials more accurate, but also further expands the scope of research on longitudinal (different depths) cumulative damage, and can provide more diverse data support for the changes in mechanical properties and microscopic damage mechanisms of nuclear energy materials.

[0171] The multi-point variable energy irradiation technology of the present invention will provide a more realistic and extensive experimental platform for the study of irradiation damage of nuclear energy materials, and provide a reliable technical foundation and scientific basis for the development and optimization design of future nuclear energy materials.

[0172] Although specific examples have been shown and described above, it will be apparent after understanding the present disclosure that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are understood in a descriptive sense only and not for limiting purposes. The description of the features or aspects in each example should be considered to be applicable to similar features or aspects in other examples. If the described techniques are performed in a different order, and / or if the components in the described system, architecture, device or circuit are replaced or supplemented in a different manner and / or by other components or their equivalents, appropriate results can still be achieved. Therefore, the scope of the present disclosure is not limited by specific embodiments, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in the present disclosure.

[0173] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A broadband hybrid ion beam irradiation device, comprising: A cocktail beam generator and pre-accelerator (1) is used to generate a mixed cocktail beam and accelerate the mixed cocktail beam; An energy modulator (2) for performing energy modulation on the mixed cocktail beam flow from the cocktail beam generation and pre-accelerator (1); A beam transmission line (4) receives the mixed cocktail beam modulated by the energy modulator (2); and The high-frequency controller (6) uniformly adjusts the voltage and phase of the cavity of the energy modulator (2) in a step-by-step manner, and changes the cavity acceleration gradient, so as to perform periodic energy modulation on the mixed cocktail beam.

2. The broadband hybrid ion beam irradiation device according to claim 1, characterized in that: The energy modulator (2) enables the mixed cocktail beam to achieve continuous energy variation at multiple energy points within an energy range of 0.3 MeV / u to 1.0 MeV / u.

3. The broadband hybrid ion beam irradiation device according to claim 1, characterized in that: By means of the energy modulator (2), 20 to 30 times of uniform energy step modulation is achieved.

4. The broadband hybrid ion beam irradiation device according to claim 1, characterized in that: The high-frequency controller (6) simulates and automatically optimizes the mixed cocktail beam flow through the synchronization of the timer (5) and the virtual accelerator technology, and realizes real-time feedback regulation.

5. The broadband hybrid ion beam irradiation device according to claim 1, characterized in that: The broadband hybrid ion beam irradiation device also includes a beam energy calibrator (3) and a timer (5), and the high-frequency controller (6) receives parameters from the timer (5) and from the beam energy calibrator (3) to perform real-time negative feedback regulation on the energy modulator (2).

6. The broadband hybrid ion beam irradiation device according to claim 5, characterized in that: The timer (5) is used to synchronize the high-frequency controller (6) and the quadrupole magnet power supply in the beam transmission line (4) for regulation. The regulation accuracy of the high-frequency controller is 0.1 kilowatt and 0.1 degree, and the regulation accuracy of the quadrupole magnet power supply is 0.01 ampere.

7. A broadband mixed ion beam irradiation method, comprising: A mixed cocktail beam is generated by using a cocktail beam generator and a pre-accelerator (1), and the mixed cocktail beam is accelerated; Modulating the mixed cocktail beam from the cocktail beam generation and pre-accelerator (1) by an energy modulator (2); and The voltage and phase of the cavity of the energy modulator (2) are uniformly adjusted step by step through a high-frequency controller (6), and the cavity acceleration gradient is changed, so as to perform periodic energy step-by-step modulation on the mixed cocktail beam in a wide energy range.

8. The broadband hybrid ion beam irradiation method according to claim 7, characterized in that: The high frequency controller (6) determines whether the minimum energy point has been reached. If the minimum energy point has not been reached, the process proceeds to the next energy point, and then the cavity working parameters are adjusted to continue determining whether the energy is accurate. If the energy is accurate, the process is recorded in the database. If the energy is inaccurate, the process returns to continue adjusting the cavity working parameters until the energy is accurate.

9. The broadband mixed ion beam irradiation method according to claim 8, characterized in that: It also includes a negative feedback step, which includes: Setting the beam energy of the mixed cocktail beam and performing step-modulation on the beam energy; The magnetic stiffness of the mixed cocktail beam is calculated and converted into a magnet current to perform magnet modulation of the mixed cocktail beam.

10. The broadband hybrid ion beam irradiation method according to claim 8, further comprising a negative feedback step, wherein the negative feedback step comprises: Setting the beam energy of the mixed cocktail beam and performing step-modulation on the beam energy; and The modulation parameters of the high frequency controller are determined and energy modulation is performed to achieve the measurement and correction of the beam energy of the mixed cocktail beam.

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