WO2019232743A1 - Magnetic field center error correction method and device, apparatus, and storage medium - Google Patents

Abstract

A magnetic field center error correction method and device, an apparatus, and a storage medium. The method comprises: obtaining a present beam position parameter of a beam at a preset beam position after a magnetic field of a magnet has acted on the beam (S101), wherein the present beam position parameter represents an offset to an actual beam position parameter with respect to a reference beam position parameter, and the reference beam position parameter corresponds to a preset position of a magnetic field center; and adjusting a magnet position parameter of the magnet according to the present beam position parameter, such that an error of the magnetic field center of the magnet is less than a preset error threshold (S102), wherein the error of the magnetic field center is the deviation of the actual position of the magnetic field center from the preset position of the magnetic field center.

Description

Method and device for correcting magnetic field center error, device, and storage medium Technical field

The present disclosure relates to the technical field of accelerators, for example, to a method and a device for correcting a magnetic field center error, a device, a device, and a storage medium.

Background technique

For synchrotrons, especially small synchrotrons, the smaller the magnetic field center error of the secondary magnet, the better the beam stability. The installation sequence of a synchrotron is usually to directly collimate and install the secondary magnet, and then correct the magnetic field center error of the secondary magnet, quadruple magnet and other magnets by correcting the magnet. The number and size of the correction magnets are usually related to the magnitude of the magnetic field center error. That is, the larger the magnetic field center error of the secondary magnet during the initial installation stage, the larger the orbital oscillation, and the larger the size of the correction magnet and the beam channel. The change in the size of the beam pipe directly raises the price and volume of all the components on the ring, which greatly increases the cost of the entire accelerator, and the overall volume will also increase.

Therefore, to reduce the volume of the synchrotron and to ensure the stability of the beam, it is necessary to ensure that the magnetic field center error of the secondary magnet is within an acceptable error range. Because there is a relative deviation between the magnetic field center and the geometric center of the magnet, even if the laser collimation system is used for the installation of the secondary magnet, the installation error of the magnetic field center cannot be guaranteed to be within an acceptable error range. Moreover, because the volume of the secondary magnet is usually very large, if the measurement time of each measurement point is 1 s, to achieve a magnetic field center measurement accuracy of 0.1 mm, the measurement time needs several hundred years, so the related technology only measures a few planes or The magnetic field center of several trajectories is used to estimate the magnetic field center. It is impossible to accurately measure the magnetic field center of the secondary magnet. Then, the magnetic field center is corrected based on the estimated magnetic field center. It is destined that the secondary magnet cannot be guaranteed to have a small initial installation Magnetic field center error.

In summary, the related technology cannot guarantee that the secondary magnet has a lower magnetic field center error during the initial installation stage.

Summary of the Invention

Embodiments of the present application provide a method, a device, a device, and a storage medium for correcting a magnetic field center error, so as to reduce a magnetic field center error of a magnet of a related art synchrotron in an initial installation stage.

An embodiment of the present application provides a method for correcting a magnetic field center error, including:

The current beam position parameter of the beam at the preset beam position after the magnetic field of the magnet is obtained, where the current beam position parameter is an offset of the actual beam position parameter from the reference beam position parameter, so The reference beam position parameter corresponds to a preset magnetic field center position;

Adjusting the magnet position parameter of the magnet according to the current beam position parameter so that the magnetic field center error of the magnet is less than a preset error threshold, wherein the magnetic field center error is an actual magnetic field center position relative to the preset Deviation of the magnetic field center position.

In an embodiment, before the current beam position parameter of the preset beam position after the beam current obtained by the magnetic field of the acquiring magnet, further includes:

Determining a relationship between a magnet position parameter and a beam position parameter of a beam after a magnetic field of the magnet acts at a preset beam position;

Adjusting the magnet position parameter of the magnet according to the current beam position parameter so that the magnetic field center error of the magnet is less than a preset error threshold includes:

Based on the relationship between the magnet position parameter and the beam position parameter of the beam after the magnetic field of the magnet acts at a preset beam position, the magnet position parameter of the magnet is adjusted according to the current beam position parameter so that The magnetic field center error of the magnet is less than a preset error threshold.

In an embodiment, the relationship between the determining magnet position parameter and the beam position parameter of the beam after the magnetic field of the magnet acts on the preset beam position includes:

Establishing a trained physical model on the correspondence between the position parameters of the magnet and the beam position parameters of the preset beam position after the action of the magnetic field of the magnet based on machine learning;

Adjusting the magnet position parameter of the magnet according to the current beam position parameter so that the magnetic field center error of the magnet is less than a preset error threshold includes:

Inputting the acquired current beam position parameter into the trained physical model;

The magnet position parameter of the magnet is adjusted according to the magnet position parameter output by the trained physical model, so that the magnetic field center error of the magnet is less than a preset error threshold.

In an embodiment, the relationship between the position parameter of the magnet and the beam position parameter of the beam after the magnetic field of the magnet acts on the preset beam position includes:

The relationship between the beam position parameter of the preset beam position and the magnetic field center error of the beam after the magnetic field of the magnet acts, and the relationship between the magnet position parameter and the magnetic field center error of the magnet.

In an embodiment, adjusting the magnet position parameter of the magnet according to the current beam position parameter so that the magnetic field center error of the magnet is less than a preset error threshold includes:

Determining the error of the magnetic field center of the magnet based on the relationship between the beam position parameter of the preset beam position and the magnetic field center error of the magnet based on the magnetic field of the magnet; or,

Based on the relationship between the magnet position parameter and the magnetic field center error of the magnet, a target magnet position parameter is determined according to the magnetic field center error, and the magnet position is adjusted to the target magnet position parameter.

In one embodiment, the magnet is a secondary magnet of a synchrotron.

An embodiment of the present application further provides a device for correcting a magnetic field center error, including:

The beam position parameter acquisition module is configured to obtain a current beam position parameter of the beam at a preset beam position after the magnetic field of the magnet is applied, wherein the current beam position parameter is an actual beam position parameter relative to a reference beam. An offset of a flow position parameter, the reference beam position parameter corresponding to a preset magnetic field center position;

An adjustment module configured to adjust a magnet position parameter of the magnet according to the current beam position parameter so that a magnetic field center error of the magnet is less than a preset error threshold, wherein the magnetic field center error is relative to an actual magnetic field center position A deviation from a center position of the preset magnetic field.

An embodiment of the present application further provides a device, where the device includes:

At least one processor;

A storage device configured to store at least one program;

When the at least one program is executed by the at least one processor, the at least one processor implements the method for correcting a magnetic field center error according to the first aspect.

An embodiment of the present application further provides a storage medium containing computer-executable instructions, and the computer-executable instructions, when executed by a computer processor, are configured to perform the method for correcting a magnetic field center error according to the first aspect.

The technical solution of the method for correcting the central error of the magnetic field provided in this embodiment is to obtain the current beam position parameter of the beam at the preset beam position after the magnetic field of the magnet acts, where the beam position parameter is the actual beam position parameter relative Based on the offset of the reference beam position parameter, the reference beam position parameter corresponds to the preset magnetic field center position; the magnet position parameter of the magnet is adjusted according to the current beam position parameter so that the magnetic field center error of the magnet is less than a preset error threshold, The magnetic field center error is the deviation of the actual magnetic field center position from the preset magnetic field center position. The current magnetic field position parameter is used to infer the magnetic field center error of the secondary magnet and the target magnet position parameter is determined. Then, the magnet position parameter is adjusted to the target. The position parameter of the magnet will make the magnetic field center error of the magnet less than the preset error threshold; then, because the secondary magnet has a smaller magnetic field center error, the orbital oscillation amplitude of the synchrotron will be within the preset range, which will be beneficial to the small size of the accelerator. And high beam quality of the accelerator.

Overview of the drawings

1 is a flowchart of a method for correcting a magnetic field center error according to an embodiment of the present application;

2 is a flowchart of a method for correcting a magnetic field center error according to another embodiment of the present application;

3 is a schematic structural diagram of an adjustment bracket provided by an embodiment of the present application;

4 is a structural block diagram of a magnetic field center error correction device provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a device according to an embodiment of the present application.

Detailed ways

FIG. 1 is a flowchart of a method for correcting a magnetic field center error according to an embodiment of the present application. The technical solution of this embodiment is suitable for correcting the magnetic field center error of the magnet, for example, it is suitable for correcting the magnetic field center error of the secondary magnet of the synchrotron in the initial installation stage. This method may be executed by a device for correcting a magnetic field center error provided in the embodiment of the present application. The device may be implemented in at least one of software and hardware, and configured to be applied in a processor. The method includes the following steps S101 to S102.

In S101, the current beam position parameter of the beam after the magnetic field of the magnet acts at a preset beam position is acquired.

In an embodiment, the current beam position parameter is an offset of the actual beam position parameter from the reference beam position parameter, and the reference beam position parameter corresponds to a preset magnetic field center position.

This embodiment is described by taking the correction of the magnetic field center error of the secondary magnet of the synchrotron as an example. In a synchrotron, a secondary magnet is used to deflect a particle beam. Due to the magnetic field of multiple secondary magnets, a large number of particle beams move along a preset trajectory in a synchronization ring. Therefore, for synchrotrons, especially small synchrotrons, in order to ensure that the particle beam can move and accelerate stably while miniaturizing, the magnetic field center error of the secondary magnet is usually required to be within an acceptable preset error threshold range. Otherwise, the particle beam will have obvious orbital oscillations on the synchronizing ring. In order to suppress the orbital oscillation, it is necessary to correct the magnetic field center error through a large number of correction magnets during the later installation process. And the more obvious the orbital oscillation, the larger the size of the correction magnet and the beam tube, and the change in the size of the beam tube will directly increase the price and volume of all the components on the ring, which will greatly increase the cost of the entire accelerator and the overall volume Get bigger.

The particle beam is a particle beam that can be accelerated by a synchrotron in the related art, such as a proton beam. In this embodiment, the beam current is collectively referred to as a particle beam.

Because the role of the secondary magnet of the synchrotron is to deflect the beam, for a given secondary magnet, the deflection trajectory of the beam is related to the magnetic field center position of the secondary magnet. In other words, the center position of the magnetic field of the secondary magnet can be inferred based on the beam trajectory. In order to improve the correction speed of the magnetic field center error, the present embodiment performs correction of the magnetic field center error by using a beam position parameter with a preset beam position. The preset beam position is a certain cross-sectional range or a certain volume range of the accelerator orbit. In actual use, the preset beam position can be determined according to the specific situation, and then the current beam position parameter of the beam at the preset beam position after the deflection effect of the secondary magnet is obtained.

The current beam position parameter is an offset of the actual beam position parameter from the reference beam position parameter, and the reference beam position parameter corresponds to a preset magnetic field center position. When the reference beam position parameter is the origin position, the beam position parameter is the actual beam position parameter. The beam position parameter in this embodiment may be obtained by a beam position detection device of the related art, which is not limited in this embodiment.

The preset magnetic field center position may be the geometric center position of the current position of the secondary magnet, or the magnetic field center position estimated according to the related technology, or the magnetic field center position desired by the user. In actual use, it can be determined according to specific conditions. In addition, in order to improve the correction speed of the magnetic field center error, the current magnet position parameters can be set as initial data, for example, the current magnet position parameters are all set to zero.

In S102, the magnet position parameter of the magnet is adjusted according to the current beam position parameter, so that the magnetic field center error of the magnet is smaller than a preset error threshold.

In one embodiment, the magnetic field center error is the deviation of the actual magnetic field center position from the preset magnetic field center position.

After obtaining the current beam position parameter of the beam after the action of the magnetic field of the magnet at a preset beam position, the magnetic field center error of the magnet can be determined according to the current beam position parameter, and then the target of the magnet can be determined according to the magnetic field center error. Position parameter, and then adjust the magnet to the target position parameter so that the magnetic field center error of the magnet is less than a preset error threshold.

The method for correcting the center error of a magnetic field provided by this embodiment obtains a current beam position parameter of a beam at a preset beam position after a magnetic field of a magnet, where the beam position parameter is an actual beam position parameter relative to a reference beam. The offset of the flow position parameter, the reference beam position parameter corresponds to the preset magnetic field center position; the magnet position parameter of the magnet is adjusted according to the current beam position parameter so that the magnetic field center error of the magnet is smaller than a preset error threshold, where the magnetic field The central error is the deviation of the actual magnetic field center position from the preset magnetic field center position. The magnetic field center error of the secondary magnet is deduced from the current beam position parameter and the target magnet position parameter is determined. If the magnet position parameter is adjusted to the target magnet position parameter, the magnetic field center error of the magnet is less than a preset error threshold. The stage magnet has a small magnetic field center error, so that the amplitude of the orbital oscillation of the synchrotron is within a preset range, which is conducive to the miniaturization of the accelerator and the accelerator has a higher beam quality.

FIG. 2 is a flowchart of a method for correcting a magnetic field center error according to another embodiment of the present application. As shown in FIG. 2, the method includes S100 to S102.

In S100, the relationship between the position parameter of the magnet and the beam position parameter of the beam after the magnetic field of the magnet acts on the preset beam position is determined.

To correct the magnet position parameter by the beam position parameter, it is usually necessary to first determine the correspondence between the magnet position parameter of the magnet and the beam position parameter of the beam deflected by the magnet at a preset beam position.

In one embodiment, regarding the establishment of the correspondence between the magnet position parameter and the beam position parameter, a physical model regarding the beam position parameter and the magnet position parameter may be established based on machine learning. The process of establishing the physical model can be: obtaining sample data of standard secondary magnets, the sample data includes a preset number of magnetic field center errors, and the magnet position parameters collected under each magnetic field center error, and each magnet position parameter Corresponding beam position parameters; then the sample data is divided into training set sample data and correction set sample data. The physical model is trained by training set sample data, and the correspondence between the magnet position parameter and the beam position parameter is established, so that the physical model can output the target position parameter of the magnet or adjust the target parameter when the beam position parameter is input, where , The adjustment target parameter is the position offset that the current magnet needs to be adjusted. In another embodiment, the physical model further outputs a magnetic field center error of the secondary magnet corresponding to the input beam position parameter. In order to improve the robustness of the physical model, the physical model is corrected by using correction set sample data to generate a trained physical model. When this physical model is used, the current beam position parameter of the beam after the magnetic field of the magnet acts at a preset beam position can output the target position parameter of the magnet or adjust the target parameter.

In an embodiment, the standard secondary magnet in this embodiment is a secondary magnet whose magnetic field center error has been determined by standard measurement methods, wherein the standard measurement method is a measurement method whose measurement accuracy meets a preset accuracy requirement.

In an embodiment, regarding the establishment of the correspondence between the magnet position parameter and the beam position parameter, the correspondence between the beam position parameter and the magnetic field center error, and the correspondence between the magnetic field center error and the magnet position parameter may be determined first. , And then determine the corresponding relationship between the beam position parameter and the magnet position parameter according to the aforementioned two corresponding relationships.

In S101, the current beam position parameter of the beam at the preset beam position after the magnetic field of the magnet is obtained is obtained.

In S102, based on the relationship between the position parameter of the magnet and the beam position parameter of the beam after the magnetic field of the magnet acts on the preset beam position, the magnet position parameter of the magnet is adjusted according to the current beam position parameter to make the The magnetic field center error is less than a preset error threshold.

After the relationship between the magnet position parameter and the beam position parameter is determined, the target magnet position parameter can be determined based on the relationship between the magnet position parameter and the beam position parameter, and the secondary magnet can be adjusted to the target based on the current beam position parameter. The position parameter of the magnet, so that the magnetic field center error of the magnet is smaller than a preset error threshold.

When the relationship between the magnet position parameter and the beam position parameter is reflected by the trained physical model, the acquired current beam position parameter is input into the trained physical model; the magnet position parameter output according to the trained physical model Adjust the magnet position parameter of the magnet so that the magnetic field center error of the magnet is less than a preset error threshold.

When the correspondence between the magnet position parameter and the beam position parameter is reflected by the correspondence between the beam position parameter and the magnetic field center error and the correspondence between the magnetic field center error and the magnet position parameter, based on the beam position parameter The relationship between the magnetic field center error of the magnet and the magnetic field center error is determined according to the current beam position parameter; based on the relationship between the magnet position parameter and the magnetic field center error of the magnet, the target magnet position parameter is determined according to the magnetic field center error, and The magnet position is adjusted to the target magnet position parameter so that the magnetic field center error of the magnet is less than a preset error threshold.

FIG. 3 is a schematic structural diagram of an adjustment bracket provided by an embodiment of the present application. As shown in FIG. 3, since the secondary magnet of the synchrotron is usually fixed on a mounting bracket, the mounting bracket usually includes a base 21 and a plurality of first connecting portions 211 provided on the base 21, and the first connecting portion 211 is provided with a height adjustment mechanism 2111. The secondary magnet 22 is fixed on the mounting plate 221 through a connection mechanism 222. The connection structure 222 may select a connection plate having an “L” or “[” shape in cross section. The mounting plate 221 is provided with a second connection portion 2211 on a side facing the mounting bracket, and the first connection portion 211 and the second connection portion 2211 can be fixedly connected together. Therefore, after the second connection part 2211 of the secondary magnet 22 is fixedly connected to the first connection part 211 of the mounting bracket, the secondary magnet can be adjusted by adjusting the height adjustment mechanism 2111 of one or several first connection parts 211. 22 position parameter.

The number of the first connection portion and the second connection portion is at least 4, and in actual use, the accuracy of the magnetic field center error of the desired secondary magnet can be set to increase the accuracy of the first connection portion and the second connection portion. Quantity, such as 7 etc.

In one embodiment, in order to improve the convenience and accuracy of the secondary magnet position adjustment, the mounting bracket of this embodiment further includes an automatic adjustment mechanism 212. The automatic adjustment mechanism 212 is used in cooperation with the first connection portion 211 and the second connection portion 2211 to adjust the position parameter of the secondary magnet 22. The automatic adjustment mechanism 212 is a device in the related art that can automatically adjust the position parameter of the top end of the second connection portion, that is, a device that adjusts the position parameter of the secondary magnet, such as a combination of a stepping motor and a cam.

In an embodiment, when the correspondence relationship between the beam position parameter and the magnet position parameter of the secondary magnet is embodied by a physical model, the physical model outputs the target magnet position parameter while also outputting the target magnet position parameter. For the adjustment method, for example, it is necessary to adjust the first connection part numbered 1 to raise the first height, while adjusting the first connection part numbered to 2 to raise the second height. In this way, the secondary magnet can be adjusted to the target magnet position according to the adjustment method of the target magnet position parameter.

In one embodiment, the physical model is set on a control mechanism, and the control mechanism is connected to the automatic adjustment mechanism 212 of the mounting bracket. The control mechanism controls the operation of the automatic adjustment mechanism according to the adjustment method of the target magnet position parameter output by the physical model, thereby The secondary magnet is automatically adjusted to the target magnet position.

The method for correcting the magnetic field center error provided in this embodiment first determines the correspondence between the magnet position parameter and the beam position parameter, and then according to the correspondence between the determined magnet position parameter and the beam position parameter and the current beam current Position parameter, determine the target magnet position parameter, and then adjust the magnet to the target position parameter, to achieve the inverse of the position parameter's independent variable by the dependent variable of the beam position parameter, compared with related technologies through limited points, lines, and areas. The magnetic field to estimate the magnetic field center error has higher accuracy, which is conducive to improving the accuracy of the magnetic field center position when the secondary magnet is initially installed, so that the synchrotron has a smaller orbital oscillation, which is conducive to the miniaturization of the accelerator and the improvement of the beam. Stream quality.

FIG. 4 is a structural block diagram of a device for correcting a magnetic field center error according to an embodiment of the present application. This device is used to execute the method for correcting the magnetic field center error provided by any of the above embodiments, and the device may be implemented by software or hardware. The device includes:

The beam position parameter acquisition module 11 is configured to obtain a current beam position parameter of a beam at a preset beam position after the magnetic field of the magnet acts, wherein the current beam position parameter is an actual beam position parameter relative to a reference An offset of a beam position parameter, and the reference beam position parameter corresponds to a preset magnetic field center position.

The adjustment module 12 is configured to adjust a magnet position parameter of the magnet according to the current beam position parameter, so that a magnetic field center error of the magnet is less than a preset error threshold, wherein the magnetic field center error is an actual magnetic field center position Deviation from the center position of the preset magnetic field.

The device for correcting the central error of a magnetic field provided by this embodiment obtains a current beam position parameter of a beam at a preset beam position after a magnetic field of a magnet, wherein the beam position parameter is an actual beam position parameter relative to a reference beam. The offset of the flow position parameter, the reference beam position parameter corresponds to the preset magnetic field center position; the magnet position parameter of the magnet is adjusted according to the current beam position parameter so that the magnetic field center error of the magnet is smaller than a preset error threshold, where the magnetic field The center error is the deviation of the actual magnetic field center position from the preset magnetic field center position. The current field position parameter is used to infer the magnetic field center error of the secondary magnet and determine the target magnet position parameter. Then, the magnet position parameter is adjusted to the target magnet position parameter. , The magnetic field center error of the magnet is smaller than a preset error threshold; then, because the secondary magnet has a smaller magnetic field center error, the amplitude of the orbital oscillation of the synchrotron is within a preset range, thereby facilitating the miniaturization of the accelerator, and The accelerator has a higher beam quality.

In an embodiment, the method further includes: a determining module.

The determining module is configured to: before the beam current after the magnetic field of the magnet is obtained is before the current beam position parameter of the preset beam position, determine that the beam position after the magnetic field parameter and the magnetic field of the magnet are Set the relationship between the beam position parameters of the beam position;

And the adjustment module is also set to:

Based on the relationship between the magnet position parameter and the beam position parameter of the beam after the magnetic field of the magnet acts at a preset beam position, the magnet position parameter of the magnet is adjusted according to the current beam position parameter so that The magnetic field center error of the magnet is less than a preset error threshold.

In an embodiment, the determining module is further configured to:

Establishing a trained physical model on the correspondence between the position parameters of the magnet and the beam position parameters of the preset beam position after the action of the magnetic field of the magnet based on machine learning;

And the adjustment module is also set to:

Inputting the acquired current beam position parameter into the trained physical model; adjusting the magnet position parameter of the magnet according to the magnet position parameter output by the trained physical model, so that the magnetic field center error of the magnet is less than Preset error threshold.

In an embodiment, the determining module is further configured to: a relationship between a beam position parameter of a beam at a preset beam position and a magnetic field center error of the magnet after the magnetic field of the magnet, and the magnet position parameter The relationship with the magnetic field center error of the magnet.

In an embodiment, the adjustment module is further configured to:

Determining the magnetic field center error of the magnet based on the relationship between the beam position parameter of the preset beam position and the magnetic field center error of the magnet based on the magnetic field of the magnet; or,

Based on the relationship between the magnet position parameter and the magnetic field center error of the magnet, a target magnet position parameter is determined according to the magnetic field center error, and the magnet position is adjusted to the target magnet position parameter.

In one embodiment, the magnet is a secondary magnet of a synchrotron. The device for correcting the magnetic field center error provided by the embodiment of the present application can execute the method for correcting the magnetic field center error provided by any embodiment of the application, and has the corresponding functional modules and beneficial effects of the execution method.

FIG. 5 is a schematic structural diagram of a device according to an embodiment of the present application. As shown in FIG. 5, the device includes a processor 201, a memory 202, an input device 203, and an output device 204. The number of processors 201 in the device may be at least one, and one processor 201 is taken as an example in FIG. 5; the processor 201, the memory 202, the input device 203, and the output device 204 in the device may be connected through a bus or other methods. Take the connection via the bus as an example.

The memory 202 is a computer-readable storage medium, and may be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules (for example, beam position) corresponding to a method for correcting a magnetic field center error in the embodiment of the present application. Parameter acquisition module 11 and adjustment module 12). The processor 201 executes various functional applications and data processing of the device by running software programs, instructions, and modules stored in the memory 202, that is, the above-mentioned method for correcting the magnetic field center error.

The memory 202 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system and application programs required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. In addition, the memory 202 may include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some examples, the memory 202 may include memory remotely set relative to the processor 201, and these remote memories may be connected to the device through a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The input device 203 may be configured to receive inputted numeric or character information, and generate key signal inputs related to user settings and function control of the device.

The output device 204 may include a display device such as a display screen, for example, a display screen of a user terminal.

An embodiment of the present application provides a storage medium containing computer-executable instructions. When the computer-executable instructions are executed by a computer processor, the method is configured to perform a method for correcting a magnetic field center error. The method includes:

The current beam position parameter of the beam at the preset beam position after the magnetic field of the magnet is obtained, where the current beam position parameter is an offset of the actual beam position parameter from the reference beam position parameter, so The reference beam position parameter corresponds to a preset magnetic field center position;

Adjusting the magnet position parameter of the magnet according to the current beam position parameter so that the magnetic field center error of the magnet is less than a preset error threshold, wherein the magnetic field center error is an actual magnetic field center position relative to the preset Deviation of the magnetic field center position.

Certainly, a storage medium including computer-executable instructions provided in the embodiments of the present application is not limited to the method operations described above, and can also perform correction of the magnetic field center error provided by any embodiment of the present application. Related operations in the method.

Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by software and necessary general hardware, and of course, can also be implemented by hardware, but in many cases the former is a better implementation. . Based on such an understanding, the technical solution of this application that is essential or contributes to related technologies can be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a computer floppy disk, Read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including several instructions to make a computer device (can be a personal computer, Server, or network device, etc.) perform the method for correcting the magnetic field center error described in each embodiment of the present application.

It is worth noting that in the embodiment of the device for correcting the magnetic field center error, each unit and module included is only divided according to functional logic, but is not limited to the above division, as long as the corresponding function can be realized; In addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application.

Industrial applicability

The embodiments of the present application provide a method, a device, a device, and a storage medium for correcting a magnetic field center error, which solves a technical problem that a magnetic field center error of a magnet of a related art synchro accelerator is relatively large in an initial installation stage, and reduces the correlation Technical effect of the magnetic field center error of the synchrotron magnet in the initial installation stage of the technology.

Claims (9)

A method for correcting the magnetic field center error includes: The current beam position parameter of the beam at the preset beam position after the magnetic field of the magnet is obtained, where the current beam position parameter is an offset of the actual beam position parameter from the reference beam position parameter, so The reference beam position parameter corresponds to a preset magnetic field center position; Adjusting the magnet position parameter of the magnet according to the current beam position parameter so that the magnetic field center error of the magnet is less than a preset error threshold, wherein the magnetic field center error is an actual magnetic field center position relative to the preset Deviation of the magnetic field center position. The method according to claim 1, wherein the acquiring the beam current after the magnetic field of the magnet is before the current beam position parameter of the preset beam position further comprises: Determining a relationship between a magnet position parameter and a beam position parameter of a beam after a magnetic field of the magnet acts at a preset beam position; Adjusting the magnet position parameter of the magnet according to the current beam position parameter so that the magnetic field center error of the magnet is less than a preset error threshold includes: Based on the relationship between the magnet position parameter and the beam position parameter of the beam after the magnetic field of the magnet acts at a preset beam position, the magnet position parameter of the magnet is adjusted according to the current beam position parameter so that The magnetic field center error of the magnet is less than a preset error threshold. The method according to claim 2, wherein the relationship between determining the position parameter of the magnet and the beam position parameter of the beam after the magnetic field of the magnet acts on the preset beam position comprises: Establishing a trained physical model on the correspondence between the position parameters of the magnet and the beam position parameters of the preset beam position after the action of the magnetic field of the magnet based on machine learning; Adjusting the magnet position parameter of the magnet according to the current beam position parameter so that the magnetic field center error of the magnet is less than a preset error threshold includes: Inputting the acquired current beam position parameter into the trained physical model; The magnet position parameter of the magnet is adjusted according to the magnet position parameter output by the trained physical model, so that the magnetic field center error of the magnet is less than a preset error threshold. The method according to claim 2, wherein a relationship between the position parameter of the magnet and a beam position parameter of a beam after a magnetic field of the magnet acts on a preset beam position comprises: The relationship between the beam position parameter of the preset beam position and the magnetic field center error of the magnet after the magnetic field of the magnet acts, and the relationship between the magnet position parameter and the magnetic field center error of the magnet. The method according to claim 4, wherein the adjusting the magnet position parameter of the magnet according to the current beam position parameter so that the magnetic field center error of the magnet is less than a preset error threshold, comprising: Determining the magnetic field center error of the magnet based on the relationship between the beam position parameter of the preset beam position and the magnetic field center error of the magnet based on the magnetic field of the magnet; or, Based on the relationship between the magnet position parameter and the magnetic field center error of the magnet, a target magnet position parameter is determined according to the magnetic field center error, and the magnet position is adjusted to the target magnet position parameter. The method according to any one of claims 1-5, wherein the magnet is a secondary magnet of a synchrotron. A magnetic field center error correction device includes: The beam position parameter acquisition module is configured to obtain a current beam position parameter of the beam at a preset beam position after the magnetic field of the magnet is applied, wherein the current beam position parameter is an actual beam position parameter relative to a reference beam. An offset of a flow position parameter, the reference beam position parameter corresponding to a preset magnetic field center position; An adjustment module configured to adjust a magnet position parameter of the magnet according to the current beam position parameter so that a magnetic field center error of the magnet is less than a preset error threshold, wherein the magnetic field center error is relative to an actual magnetic field center position A deviation from a center position of the preset magnetic field. A device includes: At least one processor; A storage device configured to store at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the method for correcting a magnetic field center error according to any one of claims 1-6. A storage medium containing computer-executable instructions, the computer-executable instructions, when executed by a computer processor, are configured to perform a method for correcting a magnetic field center error according to any one of claims 1-6.

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