Monitoring method of proton heavy ion accelerator and computer readable storage medium

Abstract

The invention provides a monitoring method of a proton heavy ion accelerator, which comprises the following steps: S10, after particle beams are led out from a storage ring of a synchrotron, generating a beam bunch lead-out record which comprises lead-out time and beam bunch parameters of each particle beam bunch; s20, a beam bunch extraction record is read, continuously extracted particle beams with the same beam bunch parameter are searched for, a beam bunch abnormity record is generated according to the search result, the beam bunch abnormity record comprises the number of additional extraction times, extraction time and beam bunch parameters of the particle beams, and the number of additional extraction times is obtained by subtracting 1 from the number of continuous extraction times of the particle beams with the same beam bunch parameter; and S30, analyzing the abnormal record of the beam bunch, and giving an alarm according to an analysis result. According to the monitoring method of the proton heavy ion accelerator, the abnormal condition can be monitored when the proton heavy ion accelerator does not completely fail. The invention further provides a computer readable storage medium for implementing the monitoring method.

Description

Technical Field

[0001] The present invention relates to the field of proton heavy ion accelerators, and in particular to a monitoring method for proton heavy ion accelerators and a computer-readable storage medium for implementing the monitoring method. Background Art

[0002] When treating with a proton heavy ion accelerator, when the performance of the accelerator device slightly deviates from the design parameters (such as beam current, energy, etc.), it may cause insufficient number of particles to be extracted in the synchrotron storage ring, and additional bunches need to be generated to meet the treatment requirements. Although the impact of this process is minor for each time, after accumulation (such as for a whole day of treatment), it may significantly extend the total treatment time and affect the treatment efficiency of the hospital. Since the device is not completely faulty and there is a lack of effective monitoring means, it is very difficult for maintenance personnel to realize that there is an abnormality in the device and perform preventive maintenance in advance to prevent the device from being shut down for a long time before the device completely fails. Summary of the Invention

[0003] The purpose of the present invention is to provide a monitoring method for a proton heavy ion accelerator, which can monitor abnormal situations when the proton heavy ion accelerator is not completely faulty.

[0004] Another purpose of the present invention is to provide a computer-readable storage medium for monitoring abnormal situations when the proton heavy ion accelerator is not completely faulty.

[0005] The present invention provides a monitoring method for a proton heavy ion accelerator. The synchrotron storage ring of the proton heavy ion accelerator extracts a particle bunch according to the request information sent by the treatment terminal. When the particle bunch does not meet the request information, the synchrotron storage ring will extract the particle bunch again until the particle bunch extracted by the synchrotron storage ring meets the request information. The monitoring method for the proton heavy ion accelerator includes: S10: After the synchrotron storage ring extracts a particle bunch, generate a bunch extraction record, and the bunch extraction record includes the extraction time and bunch parameters of each particle bunch; S20: Read the bunch extraction record, find the particle bunches with the same bunch parameters that are continuously extracted, and generate a bunch anomaly record according to the search result. The bunch anomaly record includes the additional extraction times, extraction time and bunch parameters of the particle bunch, and the additional extraction times is the number of times the particle bunches with the same bunch parameters are continuously extracted minus 1; and S30: Analyze the bunch anomaly record and initiate an alarm according to the analysis result.

[0006] The monitoring method of the heavy ion accelerator provided by the present invention generates a bunch extraction record after extracting a particle bunch from the storage ring of the synchrotron, searches for continuously extracted particle bunches with the same bunch parameters in the bunch extraction record and generates a bunch anomaly record, analyzes the bunch anomaly record and issues an alarm according to the analysis result. This monitoring method of the heavy ion accelerator can, when the proton heavy ion accelerator is not completely faulty, predict the performance degradation of the proton heavy ion accelerator by analyzing continuously extracted particle bunches with the same bunch parameters, and issue an alarm to remind the user to perform maintenance before the proton heavy ion accelerator completely fails, avoiding long-term downtime of the equipment.

[0007] In another illustrative embodiment of the monitoring method of the proton heavy ion accelerator, S30 includes: S33: judging whether the additional extraction times of a particle bunch are greater than or equal to a preset first alarm threshold according to the bunch anomaly record; and S34: if the judgment result is yes, issuing a first alarm. This is to remind the user that an anomaly has occurred during the current treatment.

[0008] In yet another illustrative embodiment of the monitoring method of the proton heavy ion accelerator, S30 further includes: S35: adding up the additional extraction times of the particle bunches extracted on the same day according to the bunch anomaly record to obtain the total additional extraction; S36: judging whether the total additional extraction is greater than a preset second alarm threshold; and S37: if the judgment result is yes, issuing a second alarm. This is to remind the user that the performance degradation of the proton heavy ion accelerator is relatively serious and to perform maintenance on the proton heavy ion accelerator as soon as possible.

[0009] In yet another illustrative embodiment of the monitoring method of the proton heavy ion accelerator, the first alarm threshold is set to 2. This can eliminate some false alarms and save performance resources.

[0010] In yet another illustrative embodiment of the monitoring method of the proton heavy ion accelerator, the first alarm threshold is set to 1, and S30 further includes: S31: determining the particle bunches with false alarms in the bunch anomaly record; and S32: subtracting 1 from the additional extraction times of the particle bunches with false alarms, and deleting the particle bunches from the bunch anomaly record when the additional extraction times of the particle bunches are 0. This can obtain a more accurate monitoring result.

[0011] In yet another illustrative embodiment of the monitoring method of the proton heavy ion accelerator, S31 includes: S311: reading the request information sent by the treatment terminal; S312: searching for a large energy layer request according to the request information, where the number of particles in the large energy layer request exceeds the maximum number of particles in a single particle bunch; and S313: determining the particle bunches corresponding to the large energy layer request in the bunch anomaly record as the particle bunches with false alarms according to the found large energy layer request.

[0012] In still another exemplary embodiment of the monitoring method for a proton heavy ion accelerator, the monitoring method for the proton heavy ion accelerator further includes: S40: Saving the bunch anomaly records as a list file, and arranging the particle bunches in the list file in descending order of the number of additional extractions. This facilitates the analysis of faults in the proton heavy ion accelerator.

[0013] In still another exemplary embodiment of the monitoring method for a proton heavy ion accelerator, in S30, an alarm is initiated by triggering a voice reminder on the control system of the proton heavy ion accelerator.

[0014] In still another exemplary embodiment of the monitoring method for a proton heavy ion accelerator, the bunch parameters include bunch energy, bunch particle type, bunch target treatment room, bunch spot size, and bunch beam intensity.

[0015] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the above method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings only schematically illustrate and explain the present invention and do not limit the scope of the present invention.

[0017] Figure 1 It is a flowchart of an exemplary embodiment of the monitoring method for a proton heavy ion accelerator.

[0018] Figure 2 It is a partial flowchart diagram of an exemplary embodiment of the monitoring method for a proton heavy ion accelerator.

[0019] Figure 3 It is a partial flowchart diagram of another exemplary embodiment of the monitoring method for a proton heavy ion accelerator.

[0020] Figure 4 It is another partial flowchart of the monitoring method for a proton heavy ion accelerator.

[0021] Figure 5 It is a flowchart of still another exemplary embodiment of the monitoring method for a proton heavy ion accelerator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] For a clearer understanding of the technical features, objectives, and effects of the invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings. In the drawings, the same reference numerals denote components having the same or similar structures but the same functions.

[0023] In this document, "exemplary" means "serving as an example, instance, or illustration", and any illustration or embodiment described as "exemplary" in this document should not be construed as a more preferred or advantageous technical solution.

[0024] In this document, "first", "second", etc. do not indicate their importance or order, etc., but are only used to indicate the differences from each other for the convenience of document description.

[0025] To simplify the drawings, only the parts related to the present invention are schematically shown in each drawing, and they do not represent the actual structure of the product.

[0026] The present invention provides a monitoring method for a proton heavy ion accelerator. The synchrotron storage ring of the proton heavy ion accelerator extracts a particle bunch according to the request information sent by the treatment terminal. When the particle bunch does not meet the request information, the synchrotron storage ring will extract the particle bunch again until the particle bunch extracted by the synchrotron storage ring meets the request information. Figure 1 It is a flowchart of a schematic implementation manner of the monitoring method for the proton heavy ion accelerator. Refer to Figure 1 , the monitoring method for the proton heavy ion accelerator includes the following steps S10 to S30.

[0027] S10: After the synchrotron storage ring extracts a particle bunch, a bunch extraction record is generated. The bunch extraction record includes the extraction time and bunch parameters of each particle bunch. Among them, the bunch parameters include but are not limited to bunch energy, bunch particle type, bunch target treatment room, bunch spot size, and bunch intensity. Collecting and generating the bunch extraction record can be achieved through the operating system of the proton heavy ion accelerator.

[0028] S20: Read the bunch extraction record, find the particle bunches with the same bunch parameters that are continuously extracted, and generate a bunch anomaly record according to the search result. The bunch anomaly record includes the additional extraction times, extraction time, and bunch parameters of the particle bunch. The additional extraction times is the number of consecutive extractions of the particle bunch with the same bunch parameters minus 1. Usually, the synchrotron storage ring will extract a particle bunch according to the request information sent by the treatment terminal. If there is a situation where particle bunches with the same bunch parameters are continuously extracted, it indicates that there is a performance degradation of the components in the proton heavy ion accelerator, and the particle bunch cannot meet the treatment requirements.

[0029] S30: Analyze the bunch anomaly record and initiate an alarm according to the analysis result. Figure 2 It is a partial flowchart of a schematic implementation manner of the monitoring method for the proton heavy ion accelerator. Refer to Figure 2 , S30 specifically includes the following S33 to S37.

[0030] S33: Judge whether there is an additional extraction times of the particle bunch greater than or equal to a preset first alarm threshold according to the bunch anomaly record. In the schematic implementation manner, the first alarm threshold is set to 2.

[0031] S34: If the judgment result is yes, a first alarm is initiated. In an exemplary embodiment, the alarm is initiated by triggering a voice reminder on the control system of the proton and heavy ion accelerator, thereby reminding the user that an abnormality has occurred in the current treatment.

[0032] In the actual treatment process of proton and heavy ion accelerators, one energy layer for treating a tumor generally requires one particle bunch. When some tumors are very large, the number of particles required for one energy layer may exceed the maximum number of particles in a single particle bunch. Therefore, under normal circumstances, particle bunches with the same bunch parameters may be continuously drawn out, and the above records will exist in the bunch abnormality records. Since no more than two particle bunches are required for treating one energy layer of a tumor, the first alarm threshold is set to 2, that is, the first alarm is triggered only when the number of consecutive particle bunches with the same bunch parameters exceeds 3. This can eliminate some false alarms and save performance resources.

[0033] S35: According to the bunch abnormality record, the number of additional extractions of the particle bunches extracted on the same day is added up to obtain the total number of additional extractions.

[0034] S36: Determine whether the total number of external leads is greater than a preset second alarm threshold. In the exemplary embodiment, the second alarm threshold is set to 100. However, in practical applications, the second alarm threshold needs to be determined according to the actual use of the proton heavy ion accelerator. When the proton heavy ion accelerator is used more in a single day, the second alarm threshold setting can be appropriately increased, otherwise the second alarm threshold setting can be appropriately reduced.

[0035] S37: If the result of the judgment is yes, a second alarm is initiated. If the total number of external extractions is greater than the second alarm threshold, it means that the performance of the proton and heavy ion accelerator has deteriorated seriously, and particle clusters frequently fail to meet the treatment requirements. Therefore, a second alarm is initiated to remind the user to repair the proton and heavy ion accelerator as soon as possible.

[0036] The monitoring method of the heavy ion accelerator provided by the present invention generates a bunch extraction record after the synchrotron storage ring extracts a particle bunch, searches for continuously extracted particle bunches with the same bunch parameters in the bunch extraction record and generates a bunch abnormality record, analyzes the bunch abnormality record and initiates an alarm according to the analysis result. The monitoring method of the heavy ion accelerator can predict the performance degradation of the proton heavy ion accelerator by analyzing the continuously extracted particle bunches with the same bunch parameters when the proton heavy ion accelerator is not completely faulty, and initiates an alarm to remind the user to perform maintenance before the proton heavy ion accelerator completely fails, thereby avoiding long-term equipment downtime.

[0037] Figure 3It is a partial flow chart of another schematic implementation manner of the monitoring method for a proton heavy ion accelerator. Refer to Figure 3 , which is the same as or similar to the monitoring method for the proton heavy ion accelerator described in Figure 2 will not be elaborated here. The difference is that the first alarm threshold is set to 1, and S30 further includes the following S31 and S32.

[0038] S31: Determine the misreported particle bunches in the bunch anomaly record. Figure 4 It is another part of the flow chart of the monitoring method for the proton heavy ion accelerator. Refer to Figure 4 , and S31 specifically includes the following S311 to S313.

[0039] S311: Read the request information sent by the treatment terminal. The request information includes the information of each energy layer for treating tumors.

[0040] S312: Search for the large energy layer request according to the request information. The number of particles in the large energy layer request exceeds the maximum number of particles in a single particle bunch. After obtaining the large energy layer request, the specific time information when the large energy layer request is sent can be determined.

[0041] S313: According to the found large energy layer request, determine the particle bunch corresponding to the large energy layer request in the bunch anomaly record as the misreported particle bunch. According to the specific time information when the large energy layer request is sent, search for the particle bunch led out at the corresponding time in the bunch anomaly record, and the misreported particle bunch can be determined.

[0042] S32: Subtract 1 from the additional extraction times of the misreported particle bunch, and when the additional extraction times of the particle bunch is 0, delete the particle bunch from the bunch anomaly record.

[0043] As mentioned above, when an individual tumor is very large, particle bunches with the same bunch parameters may be continuously led out under normal circumstances, and the above records will exist in the bunch anomaly record. In order to obtain more accurate monitoring results, it is necessary to find out the particle bunches misidentified as abnormal, that is, the misreported particle bunches, and screen and remove the reported particle bunches from the anomaly record and then analyze the updated anomaly record. Since the misreported particle bunches have been removed from the updated anomaly record, the first alarm threshold is set to 1, that is, as long as there is a situation where particle bunches with the same bunch parameters are continuously led out in the anomaly record, the first alarm can be initiated to remind the user that an anomaly has occurred in the current treatment.

[0044] Figure 5 It is a flow chart of another schematic implementation manner of the monitoring method for a proton heavy ion accelerator. Refer to Figure 5 , which is the same as Figure 2The same or similar aspects of the monitoring method of the proton heavy ion accelerator described in [reference] are not elaborated here. The difference is that the monitoring method of the proton heavy ion accelerator further includes S40.

[0045] S40: Save the beam bunch anomalies as a list file, and the list file arranges the particle beam bunches in descending order according to the number of additional extractions. With the sorted list file, users can quickly read the particle beam bunches with more anomalies, facilitating the analysis of the faults of the proton heavy ion accelerator.

[0046] The present invention also provides a computer-readable storage medium storing a computer program, which when executed by a processor, implements the steps of the above method.

[0047] It should be understood that although this specification is described according to various embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments understandable to those skilled in the art.

[0048] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation or change made without departing from the technical spirit of the present invention, such as the combination, division or repetition of features, should be included in the protection scope of the present invention.

Claims

1. A monitoring method for a proton and heavy ion accelerator, wherein a synchrotron storage ring of the proton and heavy ion accelerator draws out a particle bunch according to request information sent by a treatment terminal, and when the particle bunch does not meet the request information, the synchrotron storage ring draws out a particle bunch again until the particle bunch drawn out by the synchrotron storage ring meets the request information, characterized in that: The monitoring method of the proton and heavy ion accelerator comprises: S10: after the synchrotron storage ring extracts a particle bunch, generating a bunch extraction record, wherein the bunch extraction record includes an extraction time and bunch parameters of each particle bunch; S20: reading the bunch extraction record, searching for continuously extracted particle bunches with the same bunch parameters, and generating a bunch abnormality record according to the search result, wherein the bunch abnormality record includes the number of additional extractions of the particle bunch, the extraction time and the bunch parameters, and the number of additional extractions is the number of continuous extractions of the particle bunch with the same bunch parameters minus 1; and S30: Analyze the abnormal records of the bunches, and initiate an alarm according to the analysis results.

2. The proton and heavy ion accelerator monitoring method according to claim 1, characterized in that: S30 includes: S33: judging whether the number of additional extractions of a particle bunch is greater than or equal to a preset first alarm threshold according to the bunch abnormality record; and S34: If the judgment result is yes, a first alarm is initiated.

3. The monitoring method of a proton and heavy ion accelerator according to claim 2, characterized in that: The S30 further includes: S35: adding the number of additional extractions of particle bunches extracted on the same day according to the bunch abnormality record to obtain a total number of additional extractions; S36: Determine whether the total number of external leads is greater than a preset second alarm threshold; and S37: If the judgment result is yes, a second alarm is initiated.

4. The monitoring method of a proton and heavy ion accelerator according to claim 2, characterized in that: The first alarm threshold is set to 2.

5. The monitoring method of a proton and heavy ion accelerator according to claim 2, characterized in that: The first alarm threshold is set to 1, and S30 further includes: S31: determining the particle bunches that are falsely reported in the bunch abnormality record; and S32: subtract 1 from the additional extraction times of the falsely reported particle cluster, and when the additional extraction times of the particle cluster is 0, delete the particle cluster from the cluster abnormality record.

6. The monitoring method of a proton and heavy ion accelerator according to claim 5, characterized in that: S31 includes: S311: Reading the request information sent by the treatment terminal; S312: searching for a large energy layer request according to the request information, wherein the number of particles in the large energy layer request exceeds the maximum number of particles in a single particle bunch; and S313: According to the found high energy layer request, the particle bunch corresponding to the high energy layer request in the bunch abnormality record is determined as a false positive particle bunch.

7. The monitoring method of a proton and heavy ion accelerator according to claim 1, characterized in that: The monitoring method of the proton and heavy ion accelerator also includes: S40: saving the bunch abnormality record as a list file, wherein the list file arranges the particle bunches in descending order according to the number of additional extraction times.

8. The monitoring method of a proton and heavy ion accelerator according to claim 1, characterized in that: In S30 , an alarm is initiated by triggering a voice reminder on the control system of the proton and heavy ion accelerator.

9. The monitoring method of a proton and heavy ion accelerator according to claim 1, characterized in that: The bunch parameters include bunch energy, bunch particle type, bunch target treatment room, bunch spot size and bunch current intensity.

10. A computer-readable storage medium storing a computer program, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 9 are implemented.

Images