Particle accelerator multipath electromagnetic coupling effect analysis method and system

Abstract

The invention provides a particle accelerator multipath electromagnetic coupling effect analysis method and system, and relates to the technical field of electromagnetic compatibility, and the method comprises the steps: synchronously collecting a beam signal outputted by a beam diagnosis detector, and a plurality of electromagnetic noise signals on a beam pipeline or an associated path thereof, determining a source noise spectrum corresponding to each electromagnetic noise signal; analyzing the beam signal to obtain a target noise spectrum and identifying an over-standard frequency point; comparing the characteristics of the over-standard frequency points with the frequency spectrums of the noise sources in real time, and preliminarily screening possible coupling paths; under the condition that a plurality of possible paths exist, an actual coupling path is accurately positioned by sequentially applying EMI suppression measures and observing the change of a target frequency spectrum. According to the method, synchronous acquisition, real-time correlation analysis and closed-loop verification positioning of multi-coupling-path noise are realized, and the accuracy and diagnosis efficiency of noise source positioning in a complex electromagnetic environment are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic compatibility technology, and in particular to a method and system for analyzing multipath electromagnetic coupling effects in particle accelerators. Background Technology

[0002] The beam transport channel of a particle accelerator is the space where particles are accelerated. It is usually made of stainless steel and, in addition to providing a vacuum environment, it is also used as the signal reference ground for the beam diagnostic system (referred to as "beam diagnostic system"). Beam diagnostic signals are characterized by wide bandwidth, weak amplitude, high precision requirements, and susceptibility to electromagnetic noise. Therefore, the control of electromagnetic noise levels on the beam transport channel is extremely demanding.

[0003] Numerous magnets, high-frequency devices, and vacuum equipment are distributed along the beam transport line. These devices inject electromagnetic noise into the beam transport duct through various means, including spatial radiation, near-field coupling, cable conduction, and common impedance interference. This noise propagates and superimposes along the duct, ultimately being received by the detectors of the beam diagnostic system, severely interfering with the accurate measurement of beam parameters.

[0004] To suppress electromagnetic noise in a beam channel, its spectral characteristics must be analyzed, and the noise contribution of each coupling path must be identified. However, existing analysis methods typically involve testing each coupling path individually and then comparing the results with the beam noise spectrum afterward. This method lacks real-time comparability and cannot capture the instantaneous correlation of multipath noise under dynamic operating conditions, often leading to repeated rectification work and low efficiency. Summary of the Invention

[0005] This invention provides a method and system for analyzing multipath electromagnetic coupling effects in particle accelerators, which solves the problem of low efficiency caused by individual testing and lack of real-time comparison in the prior art. It enables simultaneous testing, real-time correlation analysis and precise positioning of electromagnetic noise affecting beam diagnosis through multiple paths.

[0006] This invention provides a method for analyzing multipath electromagnetic coupling effects in particle accelerators, comprising: The beam signal output by the beam diagnostic detector is acquired synchronously, as well as multiple electromagnetic noise signals on the beam pipe or its associated path, and the source noise spectrum corresponding to each electromagnetic noise signal is determined. The beam signal is subjected to spectral analysis to obtain the target noise spectrum, and the out-of-range frequency points in the target noise spectrum whose amplitude exceeds the electromagnetic noise tolerance threshold are identified. The spectral characteristics of the exceeding frequency points are correlated with the spectral characteristics of the corresponding frequency points in the spectrum of each source noise to preliminarily screen out possible coupling paths related to the target noise. When there are multiple possible coupling paths, the actual coupling path is determined from the possible coupling paths by sequentially applying electromagnetic interference suppression measures on each of the possible coupling paths and observing the corresponding changes in the target noise spectrum.

[0007] According to the particle accelerator multipath electromagnetic coupling effect analysis method provided by the present invention, the electromagnetic noise signal includes one or more of the following: conducted noise signal collected on the surface of the beam pipe by a voltage probe, conducted noise signal collected on the associated cable by a current probe, and near-field coupling noise signal collected in space or near the cable by a near-field probe.

[0008] According to the particle accelerator multipath electromagnetic coupling effect analysis method provided by the present invention, the step of performing correlation analysis between the spectral characteristics of the exceeding frequency points and the spectral characteristics of the corresponding frequency points in the spectrum of each source noise, and initially screening out possible coupling paths related to the target noise, specifically includes: For each frequency point exceeding the limit, perform the following judgment: If the ratio of the amplitude of the source noise spectrum at that frequency point to the amplitude of the target noise spectrum at that frequency point exceeds a preset amplitude ratio threshold; and / or, The similarity in spectral shape between the source noise spectrum and the target noise spectrum within a preset neighborhood at that frequency point exceeds a preset spectral shape similarity threshold. Then the physical path corresponding to the noise spectrum of the source is determined to be a possible coupling path.

[0009] According to the particle accelerator multipath electromagnetic coupling effect analysis method provided by the present invention, the application of electromagnetic interference suppression measures on each of the possible coupling paths specifically includes: Add EMI-absorbing magnetic rings to the cables that have been selected as potential coupling paths.

[0010] According to the particle accelerator multipath electromagnetic coupling effect analysis method provided by the present invention, the step of observing the corresponding changes in the target noise spectrum and determining the actual coupling path from the possible coupling paths specifically includes: After each application of the electromagnetic interference suppression measures, the target noise spectrum is reacquired; If the amplitude of the corresponding out-of-range frequency point in the target noise spectrum decreases by more than the preset minimum relative decrease ratio compared to before the electromagnetic interference suppression measures were applied, then the path for which the electromagnetic interference suppression measures are currently applied is determined to be an actual coupling path. Conversely, if the path is not found to be a valid coupling path, then that path is excluded.

[0011] According to the particle accelerator multipath electromagnetic coupling effect analysis method provided by the present invention, the synchronous acquisition of the beam signal output by the beam diagnostic detector, and multiple electromagnetic noise signals on the beam pipe or its associated path, specifically includes: The beam signal and multiple electromagnetic noise signals were simultaneously acquired using a multi-channel spectrum analyzer. Spectral analysis was performed on the beam signal and multiple electromagnetic noise signals.

[0012] According to the particle accelerator multipath electromagnetic coupling effect analysis method provided by the present invention, after determining the actual coupling path from the possible coupling paths, the method further includes: On the determined actual coupling path, the noise levels at the noise source injection point, the midpoint of the beam channel, and the installation point of the beam diagnostic detector are measured, and the transmission attenuation characteristics of the noise along the beam channel are analyzed.

[0013] This invention also provides a system for analyzing multipath electromagnetic coupling effects in particle accelerators, comprising the following modules: The synchronous acquisition module is used to synchronously acquire the beam signal output by the beam diagnostic detector, as well as multiple electromagnetic noise signals on the beam pipe or its associated path, and determine the source noise spectrum corresponding to each electromagnetic noise signal. The target noise spectrum analysis module is used to perform spectrum analysis on the beam signal to obtain the target noise spectrum and identify the out-of-range frequency points in the target noise spectrum whose amplitude exceeds the electromagnetic noise tolerance threshold. The possible coupling path screening module is used to perform correlation analysis between the spectral characteristics of the exceeding frequency points and the spectral characteristics of the corresponding frequency points in the spectrum of each source noise, and to preliminarily screen out possible coupling paths related to the target noise; The actual coupling path determination module is used to determine the actual coupling path from the possible coupling paths when there are multiple possible coupling paths by sequentially applying electromagnetic interference suppression measures on each of the possible coupling paths and observing the corresponding changes in the target noise spectrum.

[0014] According to the particle accelerator multipath electromagnetic coupling effect analysis system provided by the present invention, the synchronous acquisition module includes at least one of a voltage probe, a current probe and a near-field probe, as well as a multi-channel spectrum analyzer; the multi-channel spectrum analyzer is connected to the beam diagnostic detector and each probe respectively.

[0015] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the particle accelerator multipath electromagnetic coupling effect analysis method as described above.

[0016] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the particle accelerator multipath electromagnetic coupling effect analysis method as described above.

[0017] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the particle accelerator multipath electromagnetic coupling effect analysis method as described above.

[0018] The present invention provides a method and system for analyzing multipath electromagnetic coupling effects in particle accelerators. This method synchronously acquires the beam signal output from the beam diagnostic detector, as well as multiple electromagnetic noise signals on the beam channel or its associated paths, and determines the source noise spectrum corresponding to each electromagnetic noise signal. It analyzes the beam signal to obtain the target noise spectrum and identifies out-of-range frequency points. The characteristics of the out-of-range frequency points are compared in real time with the spectra of each noise source to initially screen possible coupling paths. When there are multiple possible coupling paths, EMI suppression measures are applied sequentially, and changes in the target spectrum are observed to accurately locate the actual coupling path. This invention achieves synchronous acquisition, real-time correlation analysis, and closed-loop verification and location of noise from multiple coupling paths, solving the inefficiency problem caused by traditional methods that test each path individually and lack real-time comparison. It significantly improves the accuracy and diagnostic efficiency of noise source location in complex electromagnetic environments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a flowchart illustrating the method for analyzing multipath electromagnetic coupling effects in particle accelerators provided by this invention.

[0021] Figure 2 This is a schematic diagram of the multipath electromagnetic coupling effect measurement system provided by the present invention.

[0022] Figure 3 This is a schematic diagram of the multipath electromagnetic coupling effect positioning process provided by the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the particle accelerator multipath electromagnetic coupling effect analysis system provided by the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0025] Figure label: 11: Beam tube; 12: Beam diagnostic detector; 13: Beam diagnostic test line; 14: Transmitter equipment; 15: Transmitter equipment grounding; 16: Transmitter equipment power cord; 17: Beam diagnostic auxiliary equipment; 18: Beam diagnostic grounding; 19: Signal interconnection line; 110: Power supply line; 21: Voltage probe; 22: Near-field probe; 23: Current probe; 24: Multi-channel spectrum analyzer test line; 25: Multi-channel spectrum analyzer. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0027] The present invention will now be described in detail with reference to the accompanying drawings. The specific operation methods in the method embodiments can also be applied to the device embodiments or system embodiments. In the description of the present invention, unless otherwise stated, "at least one" includes one or more. "Multiple" refers to two or more. For example, at least one of A, B, and C includes: A existing alone, B existing alone, A and B existing simultaneously, A and C existing simultaneously, B and C existing simultaneously, and A, B, and C existing simultaneously. In the present invention, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0028] The present invention will now be described in detail with reference to specific embodiments.

[0029] In some specific embodiments of the present invention, such as Figure 1 As shown, this scheme provides a method for analyzing multipath electromagnetic coupling effects in particle accelerators, including: Step S100: Synchronously acquire the beam signal output by the beam diagnostic detector, as well as multiple electromagnetic noise signals on the beam pipe or its associated path, and determine the source noise spectrum corresponding to each electromagnetic noise signal. Step S200: Perform spectrum analysis on the beam signal to obtain the target noise spectrum, and identify the out-of-range frequency points in the target noise spectrum whose amplitude exceeds the electromagnetic noise tolerance threshold. Step S300: Perform correlation analysis between the spectral characteristics of the exceeding frequency points and the spectral characteristics of the corresponding frequency points in the spectrum of each source noise, and preliminarily screen out possible coupling paths related to the target noise; Step S400: Actual coupling path determination module, used to determine the actual coupling path from the possible coupling paths by sequentially applying electromagnetic interference suppression measures on each of the possible coupling paths and observing the corresponding changes in the target noise spectrum when there are multiple possible coupling paths.

[0030] It should be noted that existing electromagnetic noise analysis schemes for particle accelerator beam channels typically employ individual coupling path testing followed by analysis and verification based on noise spectrum characteristics. This lacks real-time comparability and often leads to repeated rectification efforts. Furthermore, analyzing the noise transmission effect through the beam channel between the noise source and the beam detector is crucial for developing suppression measures, but current technologies lack a systematic analysis of the noise transmission effect through the channel.

[0031] Therefore, this invention, by simultaneously acquiring beam diagnostic signals and multiple noise signals and performing real-time spectrum comparison, can analyze the correlation between noise in each coupling path and the target noise on the same time reference, greatly improving the real-time performance and accuracy of diagnosis. By combining preliminary screening through spectrum correlation with dynamic verification through the application of suppression measures, the true actual coupling path can be effectively distinguished and accurately located, especially in complex multipath coupling scenarios, avoiding misjudgments and making rectification measures highly targeted.

[0032] The present invention will now be described through specific embodiments.

[0033] Example 1: Multipath Electromagnetic Coupling Effect Measurement System like Figure 2 As shown, this embodiment of the invention provides a multipath electromagnetic coupling effect measurement system, mainly including: a beam pipe 11, a beam diagnostic detector 12, a beam diagnostic test line 13, a transmitter source device 14, a transmitter source device grounding 15, a transmitter source device power line 16, a beam diagnostic auxiliary device 17, a beam diagnostic grounding 18, a signal interconnection line 19, a power supply line 110, and other actual accelerator components, as well as dedicated test hardware introduced for implementing this invention. This dedicated test hardware includes: Multi-channel spectrum analyzer 25: As the core analysis device of the system, it has the functions of multi-channel synchronous acquisition and real-time spectrum analysis.

[0034] Multiple probes are included, including voltage probe 21, current probe 23, and near-field probe 22. These probes are connected to the multi-channel spectrum analyzer 25 via multi-channel spectrum analyzer test leads 24.

[0035] Voltage probe 21: mainly used to directly measure the noise voltage between different positions on the surface of the beam pipe 11 in order to evaluate the conduction and distribution of noise on the pipe, as well as the noise injected by the emission source through common ground coupling.

[0036] Current probe 23: mainly used to be clipped onto the power supply line 16 of the transmitter device, the power supply line 110 of the beam diagnostic system, or other related cables to measure the noise current conducted in the cable.

[0037] Near-field probe 22: mainly used to detect spatial magnetic or electric fields and measure noise generated by near-field coupling (e.g., between cables, between equipment and pipes).

[0038] The beam diagnostic detector 12 uses the beam tube 11 as its signal reference ground. The weak beam signal it detects is processed by the beam diagnostic test line 13 and the beam diagnostic auxiliary equipment 17, and then connected to a specific channel of the multi-channel spectrum analyzer 25 via the signal interconnect line 19. Thus, the beam diagnostic signal and various noise signals are synchronously connected to the same analysis device.

[0039] The noise measured by beam diagnostic test line 13 is defined as the target noise. The noise measured by other probes is the noise level corresponding to the coupling path of that path, which is defined as the source noise. The physical location or line of each source noise is defined as the corresponding coupling path. This coupling path is essentially the specific physical path through which the noise is transmitted from the noise source device to the beam pipe or beam diagnostic system, such as a specific cable, spatial channel or common ground impedance.

[0040] The multipath electromagnetic coupling effect measurement system provided in this invention can be used to analyze the superposition and transmission effects of multiple coupling paths of the emission source in the beam channel of a particle accelerator, providing a basis for further suppressing electromagnetic noise in the beam channel.

[0041] Example 2: Analysis method for multipath electromagnetic coupling effect: The following is combined Figure 2 ,right Figure 1 The steps described in this invention will be explained in detail. The analytical method of this invention specifically includes the following steps: Step 1 (corresponding) Figure 1 Step S100): Synchronous signal acquisition.

[0042] In some possible embodiments of the present invention, the electromagnetic noise signal includes one or more of the following: conducted noise signal collected by a voltage probe on the surface of the beam pipe, conducted noise signal collected by a current probe on the associated cable, and near-field coupling noise signal collected by a near-field probe in space or near the cable.

[0043] With the particle accelerator in operation, activate the multi-channel spectrum analyzer 25 to synchronously acquire the following signals: The beam signal output by the beam diagnostic detector 12 (accessed via signal interconnect 19).

[0044] Noise signals collected by voltage probe 21 on the surface of beam channel 11 (e.g., near the noise source and beam detector).

[0045] Noise signals collected by current probe 23 on critical cables (such as power line 16 of the transmitter device).

[0046] Noise signals collected by near-field probe 22 at key spatial locations (such as between cables, between equipment and pipes).

[0047] Synchronous acquisition means that all channels of the multi-channel spectrum analyzer 25 start acquiring data at the same time and keep the timestamps synchronized, ensuring that all spectrum data have a comparable time reference.

[0048] Step Two (corresponding) Figure 1 Step S200): Target noise spectrum analysis and over-standard point identification.

[0049] Specifically, the multi-channel spectrum analyzer 25 performs spectral analysis on the acquired beam signal to obtain its noise spectrum, which is defined as the target noise spectrum. Based on the beam diagnostic system's requirements for signal-to-noise ratio and measurement accuracy, an electromagnetic noise tolerance threshold is preset. The amplitude of each frequency point in the target noise spectrum is compared with this threshold to identify all frequency points whose amplitude exceeds the limit, and these are recorded as the exceeding frequency points. These points are the direct causes of the degraded beam measurement performance and are the target objects of subsequent analysis.

[0050] Step 3 (corresponding) Figure 1 Step S300): Source-target spectrum correlation analysis and preliminary screening.

[0051] Simultaneously, the multi-channel spectrum analyzer 25 also generates the source noise spectrum corresponding to the signals acquired by each probe. The characteristics (mainly center frequency and amplitude characteristics) of each out-of-range frequency point identified in step two are compared and correlated in real time with the characteristics of all source noise spectra at the same frequency point.

[0052] In some possible embodiments of the present invention, the step of performing correlation analysis between the spectral characteristics of the exceeding frequency points and the spectral characteristics of the corresponding frequency points in the spectrum of each of the source noise points, and initially screening out possible coupling paths related to the target noise, specifically includes: For each frequency point exceeding the limit, perform the following judgment: If the ratio of the amplitude of the source noise spectrum at that frequency point to the amplitude of the target noise spectrum at that frequency point exceeds a preset amplitude ratio threshold; and / or, The similarity in spectral shape between the source noise spectrum and the target noise spectrum within a preset neighborhood at that frequency point exceeds a preset spectral shape similarity threshold. Then the physical path corresponding to the noise spectrum of the source is determined to be a possible coupling path.

[0053] Specifically, correlation analysis includes comparing the relative magnitudes of the source noise and target noise at the specified frequency point and observing the similarity of their spectral shapes (e.g., spikes, broad peaks, harmonic groups). If a source noise exhibits characteristics highly correlated with the target noise at multiple out-of-range frequency points (e.g., both have high amplitudes and consistent trends), the physical path corresponding to that source noise (e.g., a power cable, a spatial coupling region) is preliminarily marked as a possible coupling path. For example, the source noise's spectral amplitude at the out-of-range frequency point exceeds the target noise's amplitude at that point by a certain proportion (e.g., 5%); the source noise and target noise have highly similar spectral shapes (e.g., peaks, harmonics, sidebands) near the out-of-range frequency point; or the coherence coefficients of the two in the relevant frequency bands are calculated, and a threshold is set for judgment. The criteria for preliminary screening of possible coupling paths may include, but are not limited to, the above two. Those skilled in the art can adjust or combine the above criteria according to the actual noise characteristics and diagnostic accuracy requirements.

[0054] Step Four (corresponding) Figure 1 Step S400): Multipath verification and precise positioning.

[0055] If only one possible coupling path is initially selected, i.e., a single coupling path, it can be directly identified as the actual coupling path, and the impact of the noise source on the beam detector can be directly located.

[0056] If multiple results are found (e.g.) Figure 3 (As shown in the process diagram), verification is required for precise location. The specific operation involves sequentially applying a pre-defined, targeted electromagnetic interference suppression measure to each possible coupling path. The most typical and convenient measure is to add an EMI-absorbing magnetic ring designed for the excessive frequency point to the cable suspected of conducted noise.

[0057] In some possible embodiments of the present invention, observing the corresponding changes in the target noise spectrum and determining the actual coupling path from the possible coupling paths specifically includes: After each application of the electromagnetic interference suppression measures, the target noise spectrum is reacquired; If the amplitude of the corresponding out-of-range frequency point in the target noise spectrum decreases by more than the preset minimum relative decrease ratio compared to before the electromagnetic interference suppression measures were applied, then the path for which the electromagnetic interference suppression measures are currently applied is determined to be an actual coupling path. Conversely, if the amplitude has not decreased by more than the minimum relative decrease ratio compared to before the electromagnetic interference suppression measures were applied, then the path is excluded as an actual coupling path.

[0058] In other words, for multipath coupling, if the source noise and target noise spectrum characteristics correspond clearly, the coupling path can be directly located. If there are multiple possible coupling paths that make it impossible to directly determine the path, an EMI absorbing magnetic ring (reference frequency point) can be added to the suspected cable to assist in the determination. If the amplitude of the corresponding source noise spectrum decreases after adding the magnetic ring, but the amplitude of the corresponding target noise does not decrease, then the magnetic ring is retained, and magnetic rings are added to other suspected cables until the coupling path is located. The key verification logic is to immediately re-execute steps one and two after each suppression measure is applied to obtain a new target noise spectrum. The amplitude changes of the previously identified "exceeding frequency points" are then observed.

[0059] If, after applying the magnetic ring, the amplitude of the source noise corresponding to the path decreases, and at the same time, the amplitude of the corresponding out-of-range point in the target noise spectrum also decreases significantly (e.g., by more than 3 dB), then the path is determined to be an actual coupling path, and the magnetic ring is retained.

[0060] If the amplitude of the out-of-standard point of the target noise does not change significantly after applying the magnetic ring, it indicates that the path is not the main contributing path, and it should be excluded as the actual coupling path and the magnetic ring should be removed.

[0061] Through this iterative process of intervention and observation, all the actual coupling paths that play a dominant role can be verified one by one and finally identified.

[0062] Optional step five: Noise transmission effect analysis.

[0063] In some possible embodiments of the present invention, after determining the actual coupling path from the possible coupling paths, the method further includes: On the determined actual coupling path, the noise levels at the noise source injection point, the midpoint of the beam channel, and the installation point of the beam diagnostic detector are measured, and the transmission attenuation characteristics of the noise along the beam channel are analyzed.

[0064] After determining the actual coupling path, in order to further evaluate the noise impact and design a suppression scheme, the noise level of the noise source equipment at the beam tube injection point, intermediate point, and beam detector installation point can be tested by voltage probes to analyze the transmission effect of the noise source equipment on the beam tube and its noise impact on the beam detector.

[0065] Specifically, a voltage probe 21 can be used to measure the noise voltage level along this path from the injection point (such as the equipment grounding point), through the midpoint of the beam pipe 11, to the mounting point of the beam diagnostic detector 12. By comparing the noise amplitudes at these three points, the transmission attenuation characteristics of the noise along the pipe can be analyzed intuitively, and its final impact on the beam diagnostic detector can be assessed, providing a quantitative basis for subsequent shielding, filtering, or grounding optimization.

[0066] In some specific embodiments of the present invention, such as Figure 4 As shown, this solution provides a multipath electromagnetic coupling effect analysis system for particle accelerators, comprising: The synchronous acquisition module 41 is used to synchronously acquire the beam signal output by the beam diagnostic detector, as well as multiple electromagnetic noise signals on the beam pipe or its associated path, and determine the source noise spectrum corresponding to each electromagnetic noise signal. The target noise spectrum analysis module 42 is used to perform spectrum analysis on the beam signal to obtain the target noise spectrum and identify the out-of-range frequency points in the target noise spectrum whose amplitude exceeds the electromagnetic noise tolerance threshold. The possible coupling path screening module 43 is used to perform correlation analysis between the spectral characteristics of the exceeding frequency points and the spectral characteristics of the corresponding frequency points in the spectrum of each source noise, and to preliminarily screen out possible coupling paths related to the target noise. The actual coupling path determination module 44 is used to determine the actual coupling path from the possible coupling paths by sequentially applying electromagnetic interference suppression measures on each of the possible coupling paths and observing the corresponding changes in the target noise spectrum when there are multiple possible coupling paths.

[0067] Optionally, the synchronous acquisition module 41 includes at least one of a voltage probe, a current probe, and a near-field probe, as well as a multi-channel spectrum analyzer; the multi-channel spectrum analyzer is connected to the beam diagnostic detector and each probe respectively.

[0068] The particle accelerator multipath electromagnetic coupling effect analysis method and system provided by this invention uses a multi-channel spectrum analyzer to simultaneously test multiple coupling paths. By fitting and comparing the spectral characteristic curves, it can analyze the correlation of each coupling path according to the out-of-standard frequency band at the same time point, which greatly improves the rectification efficiency. For applications with multiple electromagnetic interference paths, it will greatly improve the accuracy of positioning and reduce the diagnosis time.

[0069] Figure 5 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 5As shown, the electronic device may include: a processor 510, a communications interface 520, a memory 530, and a communications bus 540, wherein the processor 510, the communications interface 520, and the memory 530 communicate with each other through the communications bus 540. The processor 510 can call logic instructions in the memory 530 to execute a method for analyzing the multipath electromagnetic coupling effect of a particle accelerator. This method includes: synchronously acquiring beam signals output from a beam diagnostic detector and multiple electromagnetic noise signals on the beam channel or its associated paths, and determining the source noise spectrum corresponding to each electromagnetic noise signal; performing spectral analysis on the beam signals to obtain the target noise spectrum, and identifying out-of-range frequency points in the target noise spectrum whose amplitude exceeds the electromagnetic noise tolerance threshold; performing correlation analysis between the spectral characteristics of the out-of-range frequency points and the spectral characteristics of corresponding frequency points in each source noise spectrum to preliminarily screen possible coupling paths related to the target noise; and, when there are multiple possible coupling paths, determining the actual coupling path from the possible coupling paths by sequentially applying electromagnetic interference suppression measures on each possible coupling path and observing the corresponding changes in the target noise spectrum.

[0070] Furthermore, the logical instructions in the aforementioned memory 530 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0071] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the particle accelerator multipath electromagnetic coupling effect analysis method provided by the above methods. The method includes: synchronously acquiring the beam signal output by the beam diagnostic detector and multiple electromagnetic noise signals on the beam channel or its associated path, and determining the source noise spectrum corresponding to each electromagnetic noise signal; performing spectral analysis on the beam signal to obtain the target noise spectrum, and identifying the out-of-range frequency points in the target noise spectrum whose amplitude exceeds the electromagnetic noise tolerance threshold; performing correlation analysis between the spectral characteristics of the out-of-range frequency points and the spectral characteristics of the corresponding frequency points in each of the source noise spectra to preliminarily screen out possible coupling paths related to the target noise; and, when there are multiple possible coupling paths, determining the actual coupling path from the possible coupling paths by sequentially applying electromagnetic interference suppression measures on each of the possible coupling paths and observing the corresponding changes in the target noise spectrum.

[0072] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program performs a method for analyzing multipath electromagnetic coupling effects in particle accelerators provided by the methods described above. This method includes: synchronously acquiring beam signals output by a beam diagnostic detector and multiple electromagnetic noise signals on the beam channel or its associated paths, and determining the source noise spectrum corresponding to each of the electromagnetic noise signals; performing spectral analysis on the beam signals to obtain a target noise spectrum, and identifying out-of-range frequency points in the target noise spectrum whose amplitude exceeds the electromagnetic noise tolerance threshold; performing correlation analysis between the spectral characteristics of the out-of-range frequency points and the spectral characteristics of the corresponding frequency points in each of the source noise spectra to preliminarily screen out possible coupling paths related to the target noise; and, when there are multiple possible coupling paths, determining the actual coupling path from the possible coupling paths by sequentially applying electromagnetic interference suppression measures on each of the possible coupling paths and observing the corresponding changes in the target noise spectrum.

[0073] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0074] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for analyzing multipath electromagnetic coupling effects in particle accelerators, characterized in that, include: The beam signal output by the beam diagnostic detector is acquired synchronously, as well as multiple electromagnetic noise signals on the beam pipe or its associated path, and the source noise spectrum corresponding to each electromagnetic noise signal is determined. The beam signal is subjected to spectral analysis to obtain the target noise spectrum, and the out-of-range frequency points in the target noise spectrum whose amplitude exceeds the electromagnetic noise tolerance threshold are identified. The spectral characteristics of the exceeding frequency points are correlated with the spectral characteristics of the corresponding frequency points in the spectrum of each source noise to preliminarily screen out possible coupling paths related to the target noise. When there are multiple possible coupling paths, the actual coupling path is determined from the possible coupling paths by sequentially applying electromagnetic interference suppression measures on each of the possible coupling paths and observing the corresponding changes in the target noise spectrum.

2. The method for analyzing multipath electromagnetic coupling effects in particle accelerators according to claim 1, characterized in that, The electromagnetic noise signal includes one or more of the following: conducted noise signal collected on the surface of the beam pipe by a voltage probe, conducted noise signal collected on the associated cable by a current probe, and near-field coupling noise signal collected in space or near the cable by a near-field probe.

3. The method for analyzing multipath electromagnetic coupling effects in particle accelerators according to claim 1 or 2, characterized in that, The step of performing a correlation analysis between the spectral characteristics of the exceeding frequency points and the spectral characteristics of the corresponding frequency points in the spectrum of each of the source noise sources to initially screen out possible coupling paths related to the target noise specifically includes: For each frequency point exceeding the limit, perform the following judgment: If the ratio of the amplitude of the source noise spectrum at that frequency point to the amplitude of the target noise spectrum at that frequency point exceeds a preset amplitude ratio threshold; and / or, The similarity in spectral shape between the source noise spectrum and the target noise spectrum within a preset neighborhood at that frequency point exceeds a preset spectral shape similarity threshold. Then the physical path corresponding to the noise spectrum of the source is determined to be a possible coupling path.

4. The method for analyzing multipath electromagnetic coupling effects in particle accelerators according to claim 1, characterized in that, The electromagnetic interference suppression measures applied on each of the possible coupling paths specifically include: Add EMI-absorbing magnetic rings to the cables that have been selected as potential coupling paths.

5. The method for analyzing multipath electromagnetic coupling effects in particle accelerators according to claim 1, characterized in that, The observation of the corresponding changes in the target noise spectrum and the determination of the actual coupling path from the possible coupling paths specifically include: After each application of the electromagnetic interference suppression measures, the target noise spectrum is reacquired; If the amplitude of the corresponding out-of-range frequency point in the target noise spectrum decreases by more than the preset minimum relative decrease ratio compared to before the electromagnetic interference suppression measures were applied, then the path for which the electromagnetic interference suppression measures are currently applied is determined to be an actual coupling path. Conversely, if the path is not found to be a valid coupling path, then that path is excluded.

6. The method for analyzing multipath electromagnetic coupling effects in particle accelerators according to claim 1, characterized in that, The synchronous acquisition of the beam signal output by the beam diagnostic detector, and multiple electromagnetic noise signals on the beam pipe or its associated path, specifically includes: The beam signal and multiple electromagnetic noise signals were simultaneously acquired using a multi-channel spectrum analyzer. Spectral analysis was performed on the beam signal and multiple electromagnetic noise signals.

7. The method for analyzing multipath electromagnetic coupling effects in particle accelerators according to claim 1, characterized in that, After determining the actual coupling path from the possible coupling paths, the method further includes: On the determined actual coupling path, the noise levels at the noise source injection point, the midpoint of the beam channel, and the installation point of the beam diagnostic detector are measured, and the transmission attenuation characteristics of the noise along the beam channel are analyzed.

8. A system for analyzing multipath electromagnetic coupling effects in particle accelerators, characterized in that, include: The synchronous acquisition module is used to synchronously acquire the beam signal output by the beam diagnostic detector, as well as multiple electromagnetic noise signals on the beam pipe or its associated path, and determine the source noise spectrum corresponding to each electromagnetic noise signal. The target noise spectrum analysis module is used to perform spectrum analysis on the beam signal to obtain the target noise spectrum and identify the out-of-range frequency points in the target noise spectrum whose amplitude exceeds the electromagnetic noise tolerance threshold. The possible coupling path screening module is used to perform correlation analysis between the spectral characteristics of the exceeding frequency points and the spectral characteristics of the corresponding frequency points in the spectrum of each source noise, and to preliminarily screen out possible coupling paths related to the target noise; The actual coupling path determination module is used to determine the actual coupling path from the possible coupling paths when there are multiple possible coupling paths by sequentially applying electromagnetic interference suppression measures on each of the possible coupling paths and observing the corresponding changes in the target noise spectrum.

9. The particle accelerator multipath electromagnetic coupling effect analysis system according to claim 8, characterized in that, The synchronous acquisition module includes at least one of a voltage probe, a current probe, and a near-field probe, as well as a multi-channel spectrum analyzer; the multi-channel spectrum analyzer is connected to the beam diagnostic detector and each probe respectively.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the particle accelerator multipath electromagnetic coupling effect analysis method as described in any one of claims 1 to 7.

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