Method of conditioning and tuning of a radio frequency accelerator

Abstract

The application provides a kind of adjustment method and tuning method of radio frequency accelerator;Wherein, adjustment method includes: respectively obtaining the unit tuning ability corresponding to first tuner and second tuner under the same reference radius;When the unit tuning ability of both is different, the unit tuning ability of second tuner under the current radius is obtained, to extract the radius corresponding to first tuner when reaching the unit tuning ability based on the unit tuning ability;Or the unit tuning ability of first tuner under the current radius is obtained, to extract the radius corresponding to second tuner when reaching the unit tuning ability based on the unit tuning ability;The application can realize the unit tuning ability of both first tuner and second tuner is same, so that the tuning process of tuner can be accurately and conveniently realized, and the overall tuning of accelerator is effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of tuning technology, and in particular relates to a radio frequency accelerator, a method for adjusting a radio frequency accelerator, a radio frequency accelerator, a method for adjusting a radio frequency accelerator, a tuning method for a radio frequency accelerator, a terminal, and a computer storage medium. Background Technology

[0002] Radio frequency (RF) accelerators are devices that use radio frequency electric fields to accelerate charged particles. They create an RF electric field within a specific accelerating structure, allowing charged particles to gain energy under the influence of the electric field, thereby increasing their velocity and kinetic energy. However, existing RF accelerators often have errors during production and assembly, leading to discrepancies between the actual and theoretical values ​​of the resonant frequency generated during operation.

[0003] To reduce the aforementioned deviations in radio frequency (RF) accelerators, tuners are often incorporated into existing RF accelerators. Tuning of the resonant frequency within the accelerator cavity is achieved by adjusting the insertion depth of the tuner. However, for RF accelerators with coupled acceleration structures, the tuners in each resonant cavity affect both the overall cavity's frequency and electric field distribution. Specifically, adjusting the insertion depth of a single resonant cavity's tuner not only affects the overall cavity's resonant frequency but also the electric field uniformity, causing deviations in the overall cavity's electric field flatness. This necessitates multiple adjustments to the insertion depth of the tuners in each cavity during the tuning process, resulting in a complex and inefficient tuning process that consumes significant time and manpower.

[0004] Therefore, improving the tuning convenience and tuning efficiency of radio frequency accelerators with coupled acceleration structures has become a technical problem that needs to be solved in this field. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a radio frequency accelerator, a method for adjusting the radio frequency accelerator, a method for tuning the radio frequency accelerator, a terminal and a computer storage medium, to solve the problems of inconvenient tuning efficiency and low tuning efficiency of existing accelerators.

[0006] To achieve the above and other related objectives, the present invention provides a radio frequency accelerator in a first aspect, comprising a first resonant cavity, a second resonant cavity, and a coupling unit; the coupling unit is coupled to the first and second resonant cavities at its two ends respectively to form an accelerator overall cavity; an even number of tuning channels are provided in the housings of the first and second resonant cavities in the circumferential direction; two tuning channels arranged radially and facing each other form a tuning channel group to achieve balanced adjustment of the frequency distribution within the cavity; a first tuner is inserted into each tuning channel of the first resonant cavity, and the insertion depth of each first tuner is the same; a second tuner is inserted into each tuning channel of the second resonant cavity, and the insertion depth of each second tuner is also the same.

[0007] To achieve the above and other related objectives, the present invention further provides, in a second aspect, a method for adjusting a radio frequency accelerator, applicable to the radio frequency accelerator described above, for obtaining a first tuning radius corresponding to the first tuner and a second tuning radius corresponding to the second tuner when the unit tuning capability of the tuners is the same; the adjustment method includes:

[0008] The unit tuning capability of the first tuner and the second tuner at the same reference radius is obtained respectively; it is detected whether the unit tuning capabilities of the two are the same; if they are detected to be different, the tuning radius of the tuner is adjusted to make the unit tuning capabilities of the first tuner and the second tuner the same; if the unit tuning capabilities of the two are the same, the tuning radius of the first tuner at the current time is extracted as the first tuning radius; and the tuning radius of the second tuner at the current time is extracted as the second tuning radius; wherein, adjusting the tuning radius of the tuner includes:

[0009] Obtain the unit tuning capability of the second tuner at the current radius; based on the unit tuning capability, and combined with the first mapping relationship between the unit tuning capability of the first tuner and the tuning radius, extract the radius corresponding to the first tuner when it reaches the unit tuning capability; or, obtain the unit tuning capability of the first tuner at the current radius; based on the unit tuning capability, and combined with the second mapping relationship between the unit tuning capability of the second tuner and the tuning radius, extract the radius corresponding to the second tuner when it reaches the unit tuning capability.

[0010] In some embodiments of the second aspect, for a single tuner, the method for obtaining the corresponding unit tuning capability includes:

[0011] The insertion depth in another tuner is fixed; using a simulation method, the cavity frequency of the accelerator's total cavity at several different insertion depths corresponding to the current tuner is obtained; wherein, the simulation method includes a method of simulating the accelerator using a simulation platform; based on different insertion depths and corresponding cavity frequencies, a fitting curve between the cavity frequency and the insertion depth is constructed using a linear fitting method, which is used as a third relationship curve; the slope corresponding to the third relationship curve is extracted, and the slope is used as the unit tuning capability corresponding to the current tuner.

[0012] In some embodiments of the second aspect, the first mapping relationship is a first relationship curve; the method of obtaining the first relationship curve includes:

[0013] Fix the radius of the second tuner; obtain the unit tuning capability of the first tuner at several different tuning radii; based on different tuning radii and the unit tuning capability corresponding to the tuning radius, construct a fitting curve between the two using linear fitting, which serves as the first relationship curve;

[0014] The second mapping relationship is a second relationship curve; the method of obtaining the second relationship curve includes: fixing the radius of the first tuner; obtaining the unit tuning capability of the second tuner under several different tuning radii; based on different tuning radii and the unit tuning capability corresponding to the tuning radius, using a linear fitting method to construct a fitting curve between the two, as the second relationship curve.

[0015] In some embodiments of the second aspect, the method for obtaining the reference radius includes:

[0016] Several different tuning radii are set; for different tuning radii, a fitting curve between the total cavity frequency and the tuner insertion depth is obtained as the sixth relationship curve, and a fitting curve between the total cavity Q value and the tuner insertion depth is obtained as the seventh relationship curve; from the sixth relationship curve and the seventh relationship curve, the reference frequency and reference Q value corresponding to different tuning radii at the same reference depth are extracted; wherein, the reference depth is any depth value not greater than the maximum insertion depth; for the same tuning radius, the reference frequency and reference Q value corresponding to the tuning radius are combined to obtain the combined value corresponding to the tuning radius; the maximum value among the combined values ​​corresponding to each tuning radius is extracted, and the tuning radius corresponding to the maximum value is used as the reference radius.

[0017] In some embodiments of the second aspect, the method for obtaining the maximum insertion depth includes:

[0018] Obtain the fitted curve between the insertion depth and frequency of the tuner, as the sixth relationship curve; extract the inflection point of the curve slope change in each of the sixth relationship curves, and take the insertion depth corresponding to the inflection point as the maximum insertion depth corresponding to the sixth relationship curve.

[0019] In some embodiments of the second aspect, the method for extracting the change inflection point includes:

[0020] Based on a preset sampling interval, the insertion depth range of the tuner is sampled to obtain each sampling point; the total cavity frequency corresponding to each sampling point in the sixth relationship curve is extracted; based on the insertion depth value and the corresponding total cavity frequency of each sampling point, the slope of the curve corresponding to the sampling point is calculated as the slope corresponding to the corresponding insertion depth; whether the slope of the curve corresponding to each sampling point is less than the slope threshold is detected sequentially; when the slope of the curve is detected to be less than the slope threshold for the first time, the sampling point is taken as the change inflection point.

[0021] To achieve the above and other related objectives, the present invention provides a tuning method for a radio frequency accelerator in a third aspect, wherein the tuning radius of the radio frequency accelerator as described above is adjusted to bring the radio frequency accelerator frequency to a target frequency; the tuning method includes:

[0022] When the unit tuning capability is the same, the first tuning radius corresponding to the first tuner and the second tuning radius corresponding to the second tuner are obtained; the first electric field influence factor of the first tuner under the first tuning radius and the second electric field influence factor of the second tuner under the second tuning radius are extracted, and the tuning coefficients are constructed based on the ratio between the first electric field influence factor and the second electric field influence factor; the insertion depth of the first tuner and the second tuner is synchronously adjusted according to the tuning coefficients, including: obtaining the unit tuning capability of the tuner and obtaining the frequency adjustment amount of the accelerator; based on the frequency adjustment amount of the accelerator, combined with the unit tuning capability and the tuning coefficients, the depth adjustment amount corresponding to the first tuner and the depth adjustment amount corresponding to the second tuner are obtained.

[0023] In a fourth aspect, the present invention provides a terminal including a processor and a memory, wherein the memory and the processor are communicatively connected; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory to cause the terminal to perform the tuning method of the radio frequency accelerator as described above.

[0024] The present invention provides a computer storage medium having a computer program stored thereon, characterized in that the program, when executed by a processor, implements the tuning method of the radio frequency accelerator as described above.

[0025] As described above, the radio frequency accelerator, radio frequency accelerator adjustment method, radio frequency accelerator tuning method, terminal, and computer storage medium provided by the present invention can achieve the same unit tuning capability for the first tuner and the second tuner in the radio frequency accelerator; and, when the unit tuning capability corresponding to the first tuner and the second tuner is the same, a first electric field influence factor corresponding to the first tuner and a second electric field influence factor corresponding to the second tuner are extracted, so as to construct tuning coefficients based on the first electric field influence factor and the second electric field influence factor; and, based on the tuning coefficients, a synchronization depth adjustment is performed on the two tuners to achieve the target frequency of the radio frequency accelerator, thereby accurately and conveniently realizing the tuning process of the tuner, greatly improving the tuning efficiency of the radio frequency accelerator, and effectively improving the overall tuning performance of the accelerator. Attached Figure Description

[0026] Figure 1 The diagram shown is a structural schematic of the transverse cross-section of the accelerator in an embodiment of the present invention.

[0027] Figure 2 The diagram shown is a structural schematic of the longitudinal cross-section of the accelerator in an embodiment of the present invention.

[0028] Figure 3 The diagram shown is a flowchart of a tuning method for a radio frequency accelerator in one embodiment of the present invention.

[0029] Figure 4 The diagram shows a flowchart of one embodiment of the method for obtaining the first tuning radius and the second tuning radius in this invention.

[0030] Figure 5 The diagram shows a flowchart illustrating how the first tuning radius and the second tuning radius are obtained in another embodiment of the present invention.

[0031] Figure 6 This diagram illustrates the unit tuning capability of the first and second tuners in this invention at the same tuning radius (45mm).

[0032] Figure 7 This is an example graph showing the first relationship curve between the first tuning radius and the unit tuning capability of the first tuner in this invention.

[0033] Figure 8 The diagram shows a flowchart illustrating the execution method of step S200 in this invention in one embodiment.

[0034] Figure 9 The diagram shows a schematic representation of the fourth and fifth relationship curves described in this invention in one embodiment.

[0035] Figure 10 The diagram shows a flowchart of an embodiment of the execution method of step S300 described in this invention.

[0036] Figure 11 The diagram shows a flowchart of one embodiment of the method for obtaining the reference radius described in this invention.

[0037] Figure 12 The diagram shown is a schematic representation of the sixth relationship curve described in this invention in one embodiment;

[0038] Figure 13 The diagram shown is a schematic representation of the seventh relationship curve described in this invention in one embodiment;

[0039] Figure 14 The diagram shows a flowchart of one embodiment of the method for obtaining the maximum insertion depth as described in this invention.

[0040] Figure 15 The diagram shows a flowchart of an embodiment of the method for extracting change inflection points as described in this invention.

[0041] Figure 16 The diagram shown is a structural schematic of the terminal described in one embodiment of the present invention.

[0042] Explanation of reference numerals in the attached figures

[0043] 10-First resonant cavity; 20-Second resonant cavity; 30-Coupled unit; 40-Tuning channel; 50-Electronic terminal; 51-Processor; 52-Memory; 53-Network interface; 54-User interface; 55-Bus system; 521-Operating system; 522-Application program. Detailed Implementation

[0044] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0045] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0046] Q-factor, or quality factor of an accelerator, is a dimensionless parameter used to measure the losses in a resonant circuit.

[0047] For uncoupled RF accelerators, changes in tuner insertion depth do not cause significant changes in the electric field distribution within the overall cavity. However, for coupled RF accelerators, changes in tuner insertion depth lead to local frequency variations in the front and rear cavities, resulting in changes in the electric field distribution of both cavities and causing distortion of field flatness. Therefore, existing RF accelerator tuning methods require multiple adjustments to the tuner insertion depth, leading to a complex and inefficient tuning process. The RF accelerator, tuning method, terminal, and computer storage medium provided in this application construct a tuning coefficient characterizing the difference in the influence of the first and second tuners on the electric field distribution within the overall cavity. Based on this tuning coefficient, synchronous depth adjustments are performed on the two tuners to achieve the target RF accelerator frequency. This allows for accurate and convenient tuning, significantly improving the accelerator's tuning efficiency.

[0048] The radio frequency accelerator (hereinafter referred to as "accelerator") is an accelerator with a coupled acceleration structure. The radio frequency accelerator includes a first resonant cavity and a second resonant cavity that are coupled together, and each of the resonant cavities is provided with a corresponding tuner.

[0049] To facilitate understanding of this technical solution, the structure of the accelerator will be described below. Please refer to [link / reference]. Figure 1 and 2 The diagram shows a schematic representation of the accelerator described in an embodiment of this application; wherein, Figure 1 This is a schematic diagram of the transverse cross-section (parallel to the beam direction) of the accelerator; Figure 2 This is a schematic diagram of the longitudinal cross-section (perpendicular to the beam direction) of the accelerator.

[0050] like Figure 1 and Figure 2 As shown, the accelerator includes: a first resonant cavity (hereinafter referred to as "first cavity") 10, a second resonant cavity (hereinafter referred to as "second cavity") 20 and a coupling unit 30; the coupling unit 30 is disposed between the first cavity 10 and the second cavity 20, and its two ends are respectively coupled to the first cavity 10 and the second cavity 20 to form a total acceleration cavity (hereinafter referred to as "total cavity").

[0051] The coupling unit 30 is coaxially arranged with the first cavity 10 and the second cavity 20 to form a total cavity for accelerating the particle beam.

[0052] In the housings of the first cavity 10 and the second cavity 20, an even number of tuning channels 40 are provided in the circumferential direction. Two tuning channels 40 arranged radially and facing each other form a tuning channel group to achieve balanced adjustment of the frequency distribution within the cavity. Tuners (not labeled) are provided in each tuning channel 40, that is, a first tuner is inserted in the tuning channel of the first cavity 10 and a second tuner is inserted in the tuning channel of the second cavity 20. In the first cavity 10, the insertion depth of each first tuner is the same, and in the second cavity 20, the insertion depth of each second tuner is also the same, thereby effectively improving the tuning efficiency of the tuner corresponding to each cavity.

[0053] It should be noted that the circumferential arrangement of each tuning channel in the first cavity can be the same as or different from the circumferential arrangement of each tuning channel in the second cavity, and no specific limitation is made here.

[0054] Please see Figure 3 The diagram shows a flowchart of a tuning method for the radio frequency accelerator provided by the present invention in one embodiment; as shown below. Figure 3 As shown, the method includes the following steps:

[0055] S100, when the unit tuning capability is the same, the first tuning radius corresponding to the first tuner and the second tuning radius corresponding to the second tuner;

[0056] In this application, the first tuner has a first unit tuning capability when the tuner radius reaches a first tuning radius; similarly, the second tuner has a second unit tuning capability when the tuner radius reaches a second tuning radius, and the first unit tuning capability and the second unit tuning capability are the same.

[0057] Wherein, the unit tuning capability is the influence intensity of the change in the insertion depth of a single tuner on the frequency change in the total cavity of the accelerator (the insertion depth of the other tuner is fixed); that is, the unit tuning capability of the first tuner is the influence intensity of the change in the insertion depth of the first tuner on the frequency change in the total cavity when the insertion depth of the second tuner is fixed at one insertion depth; similarly, the unit tuning capability of the second tuner is the influence intensity of the change in the insertion depth of the second tuner on the frequency change in the total cavity when the insertion depth of the first tuner is fixed at one insertion depth.

[0058] In one optional embodiment, the first tuning radius and the second tuning radius are obtained in the following manner: Figure 4 As shown, it includes:

[0059] S101, determines the unit tuning capability;

[0060] For example, the unit tuning capability is a preset value;

[0061] S102, based on the unit tuning capability, and combined with the first mapping relationship between the unit tuning capability and the tuning radius of the first tuner, extract the radius corresponding to the first tuner when it reaches the unit tuning capability, and use it as the first tuning radius of the first tuner.

[0062] S103, based on the unit tuning capability, and combined with the second mapping relationship between the unit tuning capability and the tuning radius of the second tuner, extract the radius corresponding to the second tuner when it reaches the unit tuning capability, and use it as the second tuning radius of the second tuner.

[0063] The mapping relationship is used to characterize the variation of the tuner's unit tuning capability with the tuning radius, including but not limited to mapping tables or relationship curves.

[0064] In another optional embodiment, the first tuning radius and the second tuning radius are obtained in the following manner: Figure 5 As shown, it includes:

[0065] S101', respectively obtain the unit tuning capability of the first tuner and the second tuner under the same reference radius;

[0066] Wherein, the reference radius is a pre-set tuner radius;

[0067] S102', detect whether the unit tuning capabilities of the two are the same. If the two are detected to be different, adjust the tuning radius of the tuner to make the unit tuning capabilities of the first tuner and the second tuner the same.

[0068] Specifically, when the unit tuning capability of the first tuner and the second tuner is detected to be different, the unit tuning capability of the second tuner at the current radius is obtained; based on the unit tuning capability, combined with the first mapping relationship between the unit tuning capability of the first tuner and the tuning radius, the radius corresponding to the first tuner when it reaches the unit tuning capability is extracted as the first tuning radius of the first tuner.

[0069] Alternatively, obtain the unit tuning capability of the first tuner at the current radius; based on the unit tuning capability, and combined with the second mapping relationship between the unit tuning capability and the tuning radius of the second tuner, extract the radius corresponding to the second tuner when it reaches the unit tuning capability, and use it as the second tuning radius of the second tuner.

[0070] In an optional embodiment, the mapping relationship is a relationship curve, that is, the first mapping relationship is a first relationship curve, and the second mapping relationship is a second relationship curve; taking the first relationship curve corresponding to the first tuner as an example, the method of obtaining the relationship curve includes:

[0071] Fix the radius of the second tuner;

[0072] Obtain the unit tuning capability of the first tuner at several different tuning radii;

[0073] Based on different tuning radii and the unit tuning capability corresponding to the tuning radii, a linear fitting method is used to construct a fitting curve between the two, which serves as the first relationship curve.

[0074] In one optional embodiment, for a single tuner, the method for obtaining the corresponding unit tuning capability includes:

[0075] Fix the insertion depth in the other tuner;

[0076] Using simulation methods, the cavity frequencies of the accelerator cavity at several different insertion depths of the current tuner are obtained; based on different insertion depths and the corresponding cavity frequencies, a third relationship curve between the cavity frequencies and the insertion depth is constructed by linear fitting.

[0077] Extract the slope corresponding to the third relationship curve and use the slope as the unit tuning capability corresponding to the current tuner.

[0078] The simulation method includes a method for simulating and calculating the accelerator using a simulation platform. For a single insertion depth, the method for obtaining the cavity frequency of the current tuner at that insertion depth using the simulation method is to input the insertion depth of the tuner into the simulation platform and use the simulation platform to simulate and calculate the frequency of the total cavity of the accelerator at that insertion depth.

[0079] For example, the simulation platform is CST software.

[0080] For example, the tuning capability of the first and second tuners within the same tuning radius (45mm) is as follows: Figure 6 As shown; wherein, the unit tuning capability of the first tuner is the slope of the third relationship curve corresponding to the first tuner, which is 11.6 kHz / mm; the unit tuning capability of the second tuner is the slope of the third relationship curve corresponding to the second tuner, which is 17.3 kHz / mm.

[0081] When a difference in unit tuning capability is detected between the first tuner and the second tuner, the tuning radius of the second tuner is fixed at 45mm, and a first relationship curve between the first tuning radius and the unit tuning capability of the first tuner is constructed as follows: Figure 7 As shown; by Figure 7 As shown, as the first tuning radius increases, its corresponding unit tuning capability also gradually increases; when the radius is 51.3mm, the corresponding unit tuning capability is 17.3kHz / mm, that is, when the radius of the second tuner is 45mm and the first tuning radius of the first tuner is 51.3mm, the unit tuning capabilities of the two are the same.

[0082] S103', when the unit tuning capabilities of the two are the same, extract the current tuning radius of the first tuner as the first tuning radius; and extract the current tuning radius of the second tuner as the second tuning radius.

[0083] It should be noted that, in this application, the first tuning radius of the first tuner and the second tuning radius of the second tuner are the radius values ​​corresponding to each tuner when their unit tuning capabilities are the same. Based on this, there can be multiple sets of numerical correspondences between the first tuning radius of the first tuner and the second tuning radius of the second tuner, rather than being limited to one set of numerical correspondences. That is, when the first tuning radius is R11, the second tuning radius is R21; when the first tuning radius is R12, the second tuning radius is R22, and so on.

[0084] S200, extract the first electric field influence factor of the first tuner under the first tuning radius, and extract the second electric field influence factor of the second tuner under the second tuning radius; set the ratio between the first electric field influence factor and the second electric field influence factor as the tuning coefficient;

[0085] Wherein, the electric field influence factor is the intensity of the influence of the insertion depth change of the single-sided tuner on the uniformity of the electric field in the total cavity of the accelerator (the insertion depth of the other tuner is fixed); that is, the first electric field influence factor is the intensity of the influence of the insertion depth change of the first tuner on the uniformity of the electric field in the total cavity (the insertion depth of the second tuner is fixed); similarly, the second electric field influence factor is the intensity of the influence of the insertion depth change of the second tuner on the uniformity of the electric field in the total cavity (the insertion depth of the first tuner is fixed).

[0086] Accordingly, the tuning coefficient is used to characterize the difference in the intensity of the influence of the first tuner and the second tuner on the electric field distribution in the total cavity.

[0087] In this embodiment, the electric field uniformity is used to characterize the uniformity / difference of the electric field characteristics between the resonant cavities; the electric field characteristics include, but are not limited to, voltage distribution, electric field intensity distribution and other physical distribution characteristics of the electric field.

[0088] Specifically, the uniformity of the electric field is characterized by a pre-constructed electric field uniformity coefficient, and the execution method of step S200 is as follows: Figure 8 As shown, it includes:

[0089] S201, take one of the first tuner and the second tuner as the current tuner, and fix the insertion depth of the other tuner;

[0090] S202, For the current tuner, obtain the electric field uniformity coefficient of the total cavity at several different insertion depths;

[0091] S203, based on different insertion depths and corresponding electric field uniformity coefficients, a linear fitting method is used to construct the relationship curve between the electric field uniformity coefficient and the insertion depth under the current tuner;

[0092] S204, extract the slope corresponding to this relationship curve, and use it as the electric field influence factor corresponding to the current tuner.

[0093] More specifically, the first tuner is used as the current tuner, and the insertion depth of the second tuner is fixed; for the first tuner, the electric field uniformity coefficient of the total cavity is obtained at several different insertion depths; based on different insertion depths and the corresponding electric field uniformity coefficients, a fourth relationship curve between the electric field uniformity coefficient and the insertion depth of the first tuner is constructed by linear fitting; the slope of the fourth relationship curve is extracted as the first electric field influence factor.

[0094] Similarly, the second tuner is used as the current tuner, and the insertion depth of the first tuner is fixed. For the second tuner, the electric field uniformity coefficient of the total cavity is obtained at several different insertion depths. Based on different insertion depths and the corresponding electric field uniformity coefficients, a fifth relationship curve between the electric field uniformity coefficient and the insertion depth of the second tuner is constructed by linear fitting. The slope of the fifth relationship curve is extracted as the second electric field influence factor.

[0095] After obtaining the first electric field influence factor and the second electric field influence factor, the ratio between the two is set as the tuning coefficient.

[0096] For example, with the insertion depth of the second tuner fixed at 75mm, the electric field uniformity coefficient corresponding to different insertion depths is extracted by adjusting the insertion depth of the first tuner, thus constructing a fourth relationship curve of the insertion depth of the first tuner versus the electric field uniformity coefficient; similarly, with the insertion depth of the first tuner fixed at 75mm, the electric field uniformity coefficient corresponding to different insertion depths is extracted by adjusting the insertion depth of the second tuner, thus constructing a fifth relationship curve of the insertion depth of the second tuner versus the electric field uniformity coefficient; the constructed fourth and fifth relationship curves are specifically as follows: Figure 9 As shown; by Figure 9 It can be seen that the first electric field influence factor corresponding to the fourth relationship curve is 0.004, and the second electric field influence factor corresponding to the fifth relationship curve is 0.0048; based on the first electric field influence factor and the second electric field influence factor, the tuning coefficient is determined to be 1:1.2.

[0097] S300, the insertion depth of the first tuner and the second tuner is synchronously adjusted according to the tuning coefficient so that the frequency of the accelerator reaches the target frequency.

[0098] Specifically, the first tuner is obtained at the current first insertion depth, and the second tuner is obtained at the current second insertion depth;

[0099] The insertion depth values ​​of the first insertion depth and the second insertion depth are adjusted; during the adjustment process, the ratio between the adjustment amount of the first insertion depth and the adjustment amount of the second insertion depth is the same as the value of the tuning coefficient, so that the depth adjustment process of the first tuner and the second tuner is a synchronous adjustment that conforms to the tuning coefficient.

[0100] For example, when the tuning coefficient is 1:1.2, when the insertion depth of the second tuner is reduced by 1 mm, the insertion depth of the first tuner is correspondingly increased by 1.2 mm to ensure that the uniformity of the electric field of the cavity does not change due to the change in the insertion depth of the tuner during the frequency adjustment process.

[0101] The tuning method for the radio frequency accelerator provided in this embodiment constructs a tuning coefficient that reflects the difference in the intensity of the influence of the first tuner and the second tuner on the electric field distribution in the total cavity. Based on this tuning coefficient, the insertion depth of the first tuner and the second tuner is synchronously adjusted. This achieves the adjustment of the frequency of the total cavity of the accelerator while ensuring that the uniformity of the electric field in the total cavity of the accelerator remains unchanged. This greatly reduces the complexity of the tuning process of the coupled structure radio frequency accelerator and effectively improves the tuning efficiency.

[0102] To improve the efficiency of accelerator frequency adjustment and enable the accelerator frequency to be adjusted to the target frequency more quickly and accurately, in some optional embodiments, step S300 is executed as follows: Figure 10 As shown, it includes:

[0103] S301, obtain the unit tuning capability of the tuner and obtain the frequency adjustment amount of the accelerator;

[0104] The unit tuning capability can be the unit tuning capability corresponding to the first tuner or the unit tuning capability corresponding to the second tuner, and both are the same.

[0105] S302, based on the frequency adjustment amount of the accelerator, combined with the unit tuning capability and the tuning coefficient, obtain the depth adjustment amount corresponding to the first tuner and the depth adjustment amount corresponding to the second tuner.

[0106] Specifically, after determining the unit tuning capability, based on the frequency adjustment of the accelerator and the unit tuning capability, the total depth adjustment is obtained; based on the tuning coefficients and the total depth adjustment, the depth adjustment L1 corresponding to the first tuner and the depth adjustment L2 corresponding to the second tuner are obtained respectively, as follows:

[0107] L1=M*a / (a-1)*W

[0108] L2=M*1 / (a-1)*W

[0109] Wherein, L1 is the depth adjustment amount corresponding to the first tuner; L2 is the depth adjustment amount corresponding to the second tuner; a is the tuning coefficient; W is the unit tuning capability; and M is the frequency adjustment amount of the accelerator.

[0110] This embodiment obtains the unit tuning capability of the tuner, and based on the unit tuning capability, the tuning coefficient, and the frequency adjustment amount to be adjusted of the accelerator, the depth adjustment amount corresponding to each tuner can be quickly obtained according to the mathematical relationship between the three, thereby effectively improving the adjustment efficiency of the target frequency.

[0111] It should be noted that, in another embodiment, step S300 can also adopt a gradual approximation adjustment method, that is, when step S300 is executed, it can also:

[0112] Set a first depth adjustment step size corresponding to the first tuner, and set a second depth adjustment step size corresponding to the second tuner; wherein, the ratio between the first depth adjustment step size and the second depth adjustment step size is the same as the value of the tuning coefficient;

[0113] Based on the first depth adjustment step size, the first insertion depth of the first tuner is adjusted to obtain a new first insertion depth; and based on the second depth adjustment step size, the second insertion depth of the second tuner is adjusted to obtain a new second insertion depth.

[0114] The current frequency of the accelerator cavity is obtained, and it is detected whether the frequency has reached the target frequency. If so, the frequency adjustment process is exited; otherwise, step S300 is continued. The process is repeated to make the frequency of the accelerator cavity reach the target frequency.

[0115] It should be noted that, in this embodiment, before adjusting the insertion depth of the tuner, it is necessary to determine the tuner whose insertion depth is to be increased and the tuner whose insertion depth is to be decreased based on the sign of the frequency adjustment amount. That is, since the depth adjustment amount of the first tuner is positively correlated with the total cavity frequency and the depth adjustment amount of the second tuner is negatively correlated with the total cavity frequency, when the target frequency is greater than the current frequency (the frequency adjustment amount is positive), the first tuner is set as the tuner whose insertion depth is to be increased and the second tuner is set as the tuner whose insertion depth is to be decreased; conversely, when the target frequency is less than the current frequency (the frequency adjustment amount is negative), the second tuner is set as the tuner whose insertion depth is to be increased and the first tuner is set as the tuner whose insertion depth is to be decreased.

[0116] Since the electric field influence factor is closely related to the uniformity of the electric field in the accelerator cavity, the accuracy of obtaining the electric field uniformity directly affects the accuracy of the electric field influence factor. To more efficiently and accurately assess the electric field uniformity of the resonant cavity, in some optional embodiments, the electric field uniformity coefficient is obtained through the following methods:

[0117] Obtain the voltage distribution corresponding to each of the resonant cavities;

[0118] Based on the voltage distribution of each resonant cavity, a coefficient characterizing the difference in voltage distribution between each resonant cavity is constructed as an electric field uniformity coefficient.

[0119] In one optional embodiment, the electric field uniformity coefficient is the ratio of the voltage distributions among the resonant cavities, used to characterize the degree of voltage difference among the resonant cavities; for example, the expression for the electric field uniformity coefficient is:

[0120]

[0121] Where k represents the electric field uniformity coefficient, V1 represents the voltage distribution of the first resonant cavity C1, and V2 represents the voltage distribution of the second resonant cavity C2. The closer the value of k is to 1, the smaller the difference in voltage distribution among the resonant cavities, i.e., the more uniform the electric field distribution; conversely, the greater the difference between the value of k and 1, the greater the difference in voltage distribution among the resonant cavities, i.e., the worse the uniformity of the electric field distribution.

[0122] In another optional embodiment, the electric field uniformity coefficient is the difference in voltage distribution between the resonant cavities, used to characterize the degree of voltage difference between the resonant cavities; for example, the expression for the electric field uniformity coefficient is:

[0123] k = V1 - V2

[0124] The closer the k value is to 0, the smaller the difference in voltage distribution among the resonant cavities, i.e., the more uniform the electric field characteristic distribution. Conversely, the greater the difference between the k value and 0, the greater the difference in voltage distribution among the resonant cavities, i.e., the worse the uniformity of the electric field characteristic distribution.

[0125] It should be noted that the voltage distribution mentioned above is a characteristic parameter used to characterize the central tendency of voltage values ​​within the cavity; for example, the voltage distribution includes the voltage mean, median, or other existing characteristic values ​​that characterize the central tendency of values.

[0126] Multiple acceleration gaps are arranged within a single resonant cavity. To more accurately and objectively characterize the voltage distribution corresponding to each resonant cavity, the voltage distribution of the resonant cavity is obtained through the following methods:

[0127] Based on the structural parameters corresponding to each acceleration gap, the acceleration voltage corresponding to each acceleration gap is obtained;

[0128] Specifically, the structural parameters corresponding to each acceleration gap in the resonant cavity are obtained; the structural parameters corresponding to each acceleration gap are input into the accelerator simulation platform, and the acceleration voltage corresponding to the acceleration gap is obtained by performing simulation calculations on the structural parameters on the simulation platform; for example, the simulation platform is CST software.

[0129] The structural parameters corresponding to the acceleration gap include the drift tube length, acceleration gap length, acceleration cycle length, and cavity radius.

[0130] The acceleration voltages corresponding to each acceleration gap within the resonant cavity are combined to obtain the voltage distribution of the resonant cavity.

[0131] Specifically, for a single resonant cavity, after obtaining the accelerating voltage corresponding to each accelerating gap within the resonant cavity, the average value of each accelerating voltage is taken, and this average voltage value is used as the voltage distribution corresponding to the current resonant cavity, that is:

[0132]

[0133] Among them, V I n represents the average gap voltage of the I-th resonant cavity. l v represents the number of accelerating gaps within the i-th resonant cavity. i This represents the voltage value of the i-th acceleration gap.

[0134] It should be noted that the above content of this application provides an example of a specific method for obtaining the voltage distribution corresponding to each resonant cavity, but it is not limited to this. As long as the voltage distribution used to characterize each resonant cavity can be obtained, it is acceptable. For example, it can be obtained by direct calculation.

[0135] In an accelerator, the size of the tuning radius of the tuner affects the physical field parameters of the accelerator cavity, such as the frequency field distribution, electric field distribution, and cavity Q value. Specifically, as the tuner radius increases, the cavity frequency increases, while the cavity Q value decreases, and vice versa.

[0136] Based on this, during accelerator tuning, in order to comprehensively consider the influence of each tuner radius on physical field parameters such as cavity frequency and cavity Q, and to ensure that the accelerator has a better working state during tuning, in a specific embodiment, the method for obtaining the reference radius is as follows: Figure 11 As shown, it includes:

[0137] S801 allows for setting several different tuning radii;

[0138] S802, under different tuning radii, obtain the sixth relationship curve between the total cavity frequency and the tuner insertion depth, and obtain the seventh relationship curve between the total cavity Q value and the tuner insertion depth;

[0139] The sixth relationship curve is used to characterize the distribution characteristics of the frequency of the accelerator cavity as a function of the tuner insertion depth; the seventh relationship curve is used to characterize the distribution characteristics of the Q value of the accelerator cavity as a function of the tuner insertion depth.

[0140] In this embodiment, the tuner includes a first tuner and a second tuner, meaning that the same operation is performed on both the first tuner and the second tuner, including:

[0141] For a single tuning radius, the frequency of the accelerator cavity at different insertion depths is obtained; based on different insertion depths and the corresponding cavity frequencies, a sixth relationship curve between the cavity frequency and the tuning insertion depth is constructed using a linear fitting method, which serves as the sixth relationship curve corresponding to the tuning radius.

[0142] Similarly, for a tuner corresponding to a single tuning radius, the Q value of the total cavity of the accelerator is obtained at different insertion depths; based on different insertion depths and the corresponding total cavity Q value, a linear fitting method is used to construct a seventh relationship curve between the total cavity Q value and the tuner insertion depth, which serves as the seventh relationship curve corresponding to the tuning radius.

[0143] S803, based on the sixth relationship curve and the seventh relationship curve, extract the reference frequency and reference Q value corresponding to different tuning radii under the same reference depth;

[0144] Wherein, the reference depth is any depth value within the range of the maximum insertion depth of the tuner; the maximum insertion depth is the depth corresponding to the point where the influence of the tuner insertion depth on the total cavity frequency is the greatest.

[0145] In some optional implementations, the reference depth is half of the maximum tuning depth corresponding to the tuner, that is, when the maximum tuning depth is 150mm, the reference depth is 75mm.

[0146] S804: For the same tuning radius, a weighted method is used to combine the reference frequency and reference Q value corresponding to the tuning radius to obtain the combined value corresponding to the tuning radius; the maximum value among the combined values ​​corresponding to each tuning radius is extracted, and the tuning radius corresponding to the maximum value is used as the reference radius.

[0147] For example, the tuning radius r is set to 35mm, 40mm, 45mm, and 50mm respectively; for each tuning radius, a sixth relationship curve corresponding to the tuning radius is constructed as follows: Figure 12 As shown, the seventh relationship curve corresponding to the constructed tuning radius is as follows: Figure 13 As shown, when the insertion depth is 75mm, the reference frequencies corresponding to different tuning radii are obtained as follows: when the tuning radius r is 35mm, the corresponding reference frequency is 166.197MHz, and the Q value is 9994.069; when the tuning radius r is 40mm, the corresponding reference frequency is 166.59MHz, and the Q value is 9892.96; when the tuning radius r is 45mm, the corresponding reference frequency is 167.027MHz, and the Q value is 9817.7; when the tuning radius r is 50mm, the corresponding reference frequency is 167.489MHz, and the Q value is 9742.39.

[0148] For different tuning radii, the corresponding reference frequency and reference Q value are weighted and combined to obtain a combined value corresponding to different tuning radii. Based on this, the reference radius is determined to be 45mm.

[0149] This embodiment comprehensively evaluates the reference frequency and reference Q value corresponding to different tuning radii, and determines the optimal tuning radius from the preset tuning radii based on the comprehensive evaluation results, thereby effectively improving the acquisition effect and efficiency of the reference radius.

[0150] To obtain the maximum insertion depth more quickly and accurately, in an optional embodiment, the method for obtaining the maximum insertion depth is as follows: Figure 14 As shown, it includes:

[0151] S901, obtain the sixth relationship curve between the insertion depth of the tuner and the frequency;

[0152] In this embodiment, the tuner includes a first tuner and a second tuner, meaning that the same operation is performed on the first tuner and the second tuner.

[0153] For example, the tuning radii are set to 35mm, 40mm, 45mm and 50mm respectively; for a single tuning radius, the frequencies corresponding to different insertion depths are obtained; based on different insertion depths and corresponding frequencies, a linear distribution curve between the two is constructed as the sixth relationship curve corresponding to the current tuning radius; this step is performed for each tuning radius to obtain the sixth relationship curve corresponding to different tuning radii.

[0154] S902, in each of the sixth relationship curves, extract the inflection point of the curve slope change, and take the insertion depth corresponding to the inflection point as the maximum insertion depth corresponding to the sixth relationship curve.

[0155] The turning point of change is the curve point where the curve slope first falls below the slope threshold during the process of the curve slope decreasing from large to small.

[0156] Specifically, the method for extracting the turning point of change is as follows: Figure 15 As shown, it includes:

[0157] S902A, extract the slope corresponding to each insertion depth in the sixth relationship curve;

[0158] Specifically, based on a preset sampling interval, the insertion depth range of the tuner is sampled to obtain sampling points for the insertion depth; the total cavity frequency corresponding to each sampling point is extracted from the sixth relationship curve; based on the insertion depth value and the corresponding total cavity frequency of each sampling point, the slope of the curve corresponding to the sampling point is calculated as the slope corresponding to the corresponding insertion depth.

[0159] S902B performs slope change detection based on the slope corresponding to each insertion depth in order to extract the inflection point of slope change;

[0160] Specifically, for each sampling point in a curve segment where the slope decreases, the slope of the curve corresponding to each sampling point is sequentially checked to see if it is less than a slope threshold; when the slope of the curve is first detected to be less than the slope threshold, the sampling point is taken as the turning point of the change.

[0161] In one specific implementation, the slope threshold is set to 0, and corresponding sixth relationship curves are constructed for tuners with tuning radii r of 35mm, 40mm, 45mm, and 50mm, respectively; the constructed sixth relationship curves are shown in [reference needed]. Figure 12 ;like Figure 10 It can be seen that when the tuner insertion depth is 150mm, the curve frequency is less than or equal to 0. Based on this, the maximum insertion depth is obtained as 150mm.

[0162] It should be noted that, in each embodiment of this application, the slope corresponding to each relationship curve is the slope corresponding to the fitted line after linear fitting of the corresponding relationship curve; for example, the slope corresponding to the first relationship curve is the slope corresponding to the first fitted line obtained after performing a first linear fitting on the first relationship curve; and so on. Those skilled in the art will understand that, as described above, the slope can also be the slope of the line constructed from the two endpoints of the corresponding relationship curve, or it can be the mean or median value of the tangent slopes corresponding to each curve point in the corresponding relationship curve.

[0163] Based on the same technical concept, the tuning method of the radio frequency accelerator provided in the above embodiments of the present invention can be implemented on the terminal side or the server side.

[0164] Please see Figure 10 This is a schematic diagram of an optional hardware structure of an electronic terminal 50 provided in an embodiment of the present invention. The electronic terminal 50 can be a live streaming device, camera, mobile phone, computer equipment, tablet device, personal digital processing device, factory back-end processing equipment, etc., integrating photo / video recording functions. The electronic terminal 50 includes: at least one processor 51, a memory 52, at least one network interface 53, and a user interface 54. The various components in the device are coupled together through a bus system 55. It is understood that the bus system 55 is used to realize the connection and communication between these components. In addition to a data bus, the bus system 55 also includes a power bus, a control bus, and a status signal bus.

[0165] The user interface 54 may include a monitor, keyboard, mouse, trackball, clicker, button, touchpad, or touch screen.

[0166] It is understood that memory 52 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM) or programmable read-only memory (PROM), used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM) and synchronous static random access memory (SSRAM). The memories described in the embodiments of this invention are intended to include, but are not limited to, these and any other suitable categories of memory.

[0167] In this embodiment of the invention, the memory 52 is used to store various types of data to support the operation of the electronic terminal 50. Examples of this data include any executable program for operation on the electronic terminal 50, such as the operating system 521 and application programs 522; the operating system 521 contains various system programs, such as the framework layer, core library layer, driver layer, etc., for implementing various basic services and handling hardware-based tasks. The application program 522 may contain various applications, such as a media player, browser, etc., for implementing various application services. The tuning method for the radio frequency accelerator provided in this embodiment of the invention can be included in the application program 522.

[0168] The methods disclosed in the above embodiments of the present invention can be applied to processor 51, or implemented by processor 51. Processor 51 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 51 or by instructions in the form of software. The processor 51 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 51 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. General-purpose processor 51 may be a microprocessor or any conventional processor, etc. The steps of the accessory optimization method provided in the embodiments of the present invention can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in memory. The processor reads the information in the memory and combines it with its hardware to complete the steps of the aforementioned method.

[0169] In an exemplary embodiment, the electronic terminal 50 may be used by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), or complex programmable logic devices (CPLDs) to execute the aforementioned method.

[0170] It should be noted that memory includes, but is not limited to, random access memory (RAM), and may also include non-volatile memory, such as at least one disk storage device. Similarly, processors can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0171] This invention also provides a computer-readable storage medium storing a computer program thereon, which, when invoked by a processor, implements the tuning method of the radio frequency accelerator.

[0172] A computer-readable storage medium can be a tangible device capable of holding and storing instructions used by an instruction execution device. Computer-readable storage media can be, for example, (but not limited to) electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, and mechanical encoding devices.

[0173] The computer-readable program described herein can be downloaded from a computer-readable storage medium to various computing / processing devices, or downloaded via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network, to an external computer or external storage device. A network adapter card or network interface in each computing / processing device receives computer-readable program instructions from the network and forwards these instructions to the computer-readable storage medium in the respective computing / processing device.

[0174] In summary, the radio frequency accelerator, radio frequency accelerator adjustment method, radio frequency accelerator tuning method, terminal, and computer storage medium provided by this invention determine the final tuning radius corresponding to the first and second tuners by adjusting the tuning radius of the tuners to make their unit tuning capabilities the same, based on the capability difference between the two tuners; and, based on the final tuning radius of the first and second tuners, by obtaining the depth adjustment ratio between the first and second tuners, synchronous depth adjustment is performed on the two tuners based on the depth adjustment ratio, thereby accurately and conveniently realizing the tuning process of the tuners and greatly improving the tuning efficiency of the accelerator; furthermore, the method of this invention can also be applied to accelerators with other coupling structures, thus having high scalability and flexibility.

[0175] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A radio frequency accelerator, characterized in that, It includes a first resonant cavity, a second resonant cavity, and a coupling unit; the two ends of the coupling unit are respectively coupled to the first resonant cavity and the second resonant cavity to form an accelerator overall cavity; Both the first and second resonant cavities have an even number of tuning channels along their circumferential direction in their housings. Two tuning channels, each arranged radially and facing each other, form a tuning channel group to achieve balanced adjustment of the frequency distribution within the cavity. A first tuner is inserted into the tuning channel of the first resonant cavity, and the insertion depth of each first tuner is the same; a second tuner is inserted into the tuning channel of the second resonant cavity, and the insertion depth of each second tuner is also the same.

2. A method for regulating a radio frequency accelerator, characterized in that, Applicable to the radio frequency accelerator as described in claim 1, used to obtain the first tuning radius corresponding to the first tuner and the second tuning radius corresponding to the second tuner when the unit tuning capability of the tuners is the same; The adjustment method includes: Obtain the unit tuning capability of the first tuner and the second tuner at the same reference radius; The system detects whether the unit tuning capabilities of the two tuners are the same; if they are different, it adjusts the tuning radius of the tuners to make the unit tuning capabilities of the first tuner and the second tuner the same; if the unit tuning capabilities of the two tuners are the same, it extracts the current tuning radius of the first tuner as the first tuning radius; and it extracts the current tuning radius of the second tuner as the second tuning radius.

3. The method for regulating a radio frequency accelerator according to claim 2, characterized in that, The method for adjusting the tuning radius of the tuner includes: Obtain the unit tuning capability of the second tuner at the current radius; based on this unit tuning capability, and combined with the first mapping relationship between the unit tuning capability and the tuning radius of the first tuner, extract the radius corresponding to the first tuner when it reaches the unit tuning capability; or... Obtain the unit tuning capability of the first tuner at the current radius. Based on the unit tuning capability and the second mapping relationship between the unit tuning capability and the tuning radius of the second tuner, extract the radius corresponding to the second tuner when it reaches the unit tuning capability.

4. The method for regulating a radio frequency accelerator according to claim 3, characterized in that, The first mapping relationship is the first relationship curve; The methods for obtaining the first relationship curve include: Fix the radius of the second tuner; Obtain the unit tuning capability of the first tuner at several different tuning radii; Based on different tuning radii and the unit tuning capability corresponding to the tuning radii, a linear fitting method is used to construct a fitting curve between the two, which serves as the first relationship curve; The second mapping relationship is a second relationship curve; the method for obtaining the second relationship curve includes: The radius of the first tuner is fixed; Obtain the unit tuning capability of the second tuner at several different tuning radii; Based on different tuning radii and the unit tuning capability corresponding to the tuning radii, a linear fitting method is used to construct a fitting curve between the two, which serves as the second relationship curve.

5. The method for regulating a radio frequency accelerator according to claim 2, characterized in that, For a single tuner, the corresponding method for obtaining the unit tuning capability includes: Fix the insertion depth in the other tuner; The cavity frequency of the accelerator's total cavity is obtained using a simulation method at several different insertion depths of the current tuner; wherein, the simulation method includes a method of performing simulation calculations on the accelerator using a simulation platform; Based on different insertion depths and corresponding cavity frequencies, a linear fitting method is used to construct a fitting curve between the cavity frequency and the insertion depth, which serves as the third relationship curve. Extract the slope corresponding to the third relationship curve, and use the slope as the unit tuning capability corresponding to the current tuner.

6. The method for regulating a radio frequency accelerator according to claim 2, characterized in that, The methods for obtaining the reference radius include: Set several different tuning radii; Under different tuning radii, the fitting curve between the total cavity frequency and the tuner insertion depth is obtained as the sixth relationship curve, and the fitting curve between the total cavity Q value and the tuner insertion depth is obtained as the seventh relationship curve. Based on the sixth and seventh relationship curves, extract the reference frequency and reference Q value corresponding to different tuning radii at the same reference depth; wherein, the reference depth is any depth value not greater than the maximum insertion depth; For the same tuning radius, the reference frequency and reference Q value corresponding to the tuning radius are combined to obtain the combined value corresponding to the tuning radius; Extract the maximum value from the comprehensive values ​​corresponding to each tuning radius, and use the tuning radius corresponding to the maximum value as the reference radius.

7. The method for regulating a radio frequency accelerator according to claim 6, characterized in that, The methods for obtaining the maximum insertion depth include: Obtain the fitted curve between the insertion depth and frequency of the tuner, and use it as the sixth relationship curve; In each of the sixth relationship curves, the inflection point of the curve slope change is extracted, and the insertion depth corresponding to the inflection point is taken as the maximum insertion depth corresponding to the sixth relationship curve.

8. The method for regulating a radio frequency accelerator according to claim 7, characterized in that, The method for extracting the turning point of change includes: Based on a preset sampling interval, the insertion depth range of the tuner is sampled to obtain each sampling point; the total cavity frequency corresponding to each sampling point in the sixth relationship curve is extracted; based on the insertion depth value and the corresponding total cavity frequency of each sampling point, the slope of the curve corresponding to the sampling point is calculated as the slope corresponding to the corresponding insertion depth; The slope of the curve corresponding to each sampling point is sequentially checked to see if it is less than the slope threshold; when the slope of the curve is first detected to be less than the slope threshold, the sampling point is taken as the turning point of the change.

9. A tuning method for a radio frequency accelerator, characterized in that, include: Using the adjustment method of the radio frequency accelerator as described in any one of claims 2 to 8, the first tuning radius corresponding to the first tuner and the second tuning radius corresponding to the second tuner are obtained when the unit tuning capability is the same. Extract the first electric field influence factor of the first tuner under the first tuning radius, and extract the second electric field influence factor of the second tuner under the second tuning radius, so as to construct the tuning coefficient based on the ratio between the first electric field influence factor and the second electric field influence factor; The insertion depth of the first tuner and the second tuner is synchronously adjusted according to the tuning coefficients, including: Obtain the unit tuning capability of the tuner, and obtain the frequency adjustment amount of the accelerator; Based on the frequency adjustment of the accelerator, combined with the unit tuning capability and the tuning coefficient, the depth adjustment corresponding to the first tuner and the depth adjustment corresponding to the second tuner are obtained.

10. A terminal, characterized in that, The device includes a processor and a memory, the memory being communicatively connected to the processor; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory to cause the terminal to perform the tuning method of the radio frequency accelerator as described in claim 9.

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