阅读说明：本技术 加速器注入粒子数控制方法及装置、加速器和存储介质 (Method and device for controlling injected particle number of accelerator, accelerator and storage medium ) 是由 郑志鸿 刘铮铮 李凯若 于 2019-11-12 设计创作，主要内容包括：本发明涉及一种加速器注入粒子数控制方法及装置、加速器和存储介质，该方法包括：根据预设注入粒子数和加速器粒子数的束流强度，确定加速器所需注入加速器所需注入粒子数的束流时长，也即冲击磁铁的启动平顶时间和斩束器的启动平顶时间之间的重叠时长；根据该束流时长，分别确定冲击磁铁的启动时刻和斩束器的启动时刻；根据冲击磁铁的启动时刻启动冲击磁铁，根据斩束器的启动时刻启动斩束器。(The invention relates to a method and a device for controlling the number of particles injected by an accelerator, the accelerator and a storage medium, wherein the method comprises the following steps: determining the beam duration of the number of particles to be injected into the accelerator, namely the overlapping duration between the starting flat-top time of the impact magnet and the starting flat-top time of the beam chopper, according to the preset number of the injected particles and the beam intensity of the number of particles of the accelerator; respectively determining the starting time of the impact magnet and the starting time of the beam chopper according to the beam current duration; the impact magnet is started according to the starting time of the impact magnet, and the beam chopper is started according to the starting time of the beam chopper.)

1. An accelerator injection particle number control method is applied to a particle accelerator and comprises the following steps:

determining the beam duration of the particle beam to be injected into the accelerator according to the preset number of the injected particles and the beam intensity of the particle beam of the accelerator; the beam duration is the overlapping duration between the starting flat top time of the impact magnet and the starting flat top time of the beam chopper;

respectively determining the starting time of the impact magnet and the starting time of the beam chopper according to the beam current duration;

starting the impact magnet according to the starting time of the impact magnet, and starting the beam chopper according to the starting time of the beam chopper;

wherein, according to the beam current duration, respectively determining the starting time of the impact magnet and the starting time of the beam chopper comprises:

determining a first time difference value for starting the impact magnet after the beam chopper is started according to the beam current time length, the starting flat top time of the impact magnet, the starting rising time of the impact magnet and the starting rising time of the beam chopper;

delaying the first time difference value according to the preset starting time of the impact magnet, and determining the starting time of the beam chopper;

wherein, determining a first time difference value for starting the beam chopper and starting the impact magnet after delaying according to the beam current duration, the starting flat top time of the impact magnet, the starting rise time of the impact magnet, and the starting rise time of the beam chopper comprises:

according to the formula Δ t₁＝t_p1+t_r1-t_r2-T, determining the first time difference value;

wherein, Δ t₁Is the first time difference value; t is t_p1The starting flat-top time of the impact magnet; t is t_r1Is the start rise time of the impact magnet; t is t_r2Is the start-up rise time of the beam chopper; and T is the beam current duration.

2. The method of claim 1, wherein determining the timing of the activation of the strike magnet and the timing of the activation of the beam chopper, respectively, based on the beam current duration comprises:

determining a second time difference value for starting the beam chopper after delaying the starting of the impact magnet according to the beam current time length, the starting flat top time of the beam chopper, the starting rising time of the beam chopper and the starting rising time of the impact magnet;

delaying the second time difference value according to the preset starting time of the beam chopper, and determining the starting time as the starting time of the impact magnet;

wherein determining a second time difference for starting the beam chopper after delaying the start of the impact magnet according to the beam current duration, the start-up plateau time of the beam chopper, the start-up rise time of the beam chopper, and the start-up rise time of the impact magnet comprises:

according to the formula Δ t₂＝t_p2+t_r2-t_r1-T, determining said second time difference value;

wherein, Δ t₂Is the time difference; t is t_r1Is the start rise time of the impact magnet; t is t_p2The starting flat top time of the beam chopper; t is t_r2Is the start-up rise time of the beam chopper; and T is the beam current duration.

3. The method of claim 1, further comprising, after said determining a first time difference for activating said beam chopper after said striking magnet is activated:

determining the delay time for injecting particles into the synchronizer ring according to the distance between the particle output end of the beam chopper and the ion input end of the accelerator synchronizer ring;

and adding the delay time to the first time difference value for updating.

4. The method of claim 2, further comprising, after said determining a second time difference for activating said beam chopper after said striking magnet is activated:

determining the delay time for injecting particles into the synchronizer ring according to the distance between the particle output end of the beam chopper and the ion input end of the accelerator synchronizer ring;

and adding the delay time to the second time difference value for updating.

5. An accelerator injection particle number control device, which is arranged in a particle accelerator, includes:

the beam duration determining module is set to determine the beam duration of the particle beam to be injected into the accelerator according to the preset number of the injected particles and the beam intensity of the particle beam of the accelerator; the beam duration is the overlapping duration between the starting flat top time of the impact magnet and the starting flat top time of the beam chopper;

the starting time determining module is configured to respectively determine the starting time of the impact magnet and the starting time of the beam chopper according to the beam current duration;

the starting module is used for starting the impact magnet according to the starting time of the impact magnet and starting the beam chopper according to the starting time of the beam chopper;

the start time determination module includes:

a first time difference determining unit, configured to determine a first time difference for starting the impact magnet after the beam chopper is started according to the beam current duration, the starting flat top time and the starting rise time of the impact magnet, and the starting rise time of the beam chopper;

the first starting time determining unit is set to delay the first time difference value according to the preset starting time of the impact magnet and determine the starting time of the beam chopper;

the first time difference value determination unit is configured to:

according to the formula Δ t₁＝t_p1+t_r1-t_r2-T, determining the first time difference value;

wherein, Δ t₁Is the first time differenceA value; t is t_p1The starting flat-top time of the impact magnet; t is t_r1Is the start rise time of the impact magnet; t is t_r2Is the start-up rise time of the beam chopper; t is the beam duration;

the start time determination module includes:

a second time difference determining unit, configured to determine a second time difference for starting the beam chopper after the impact magnet is started according to the beam current duration, the starting flat top time and the starting rise time of the beam chopper, and the starting rise time of the impact magnet;

and the second starting time determining unit is set to delay the second time difference according to the preset starting time of the beam chopper and determine the starting time of the impact magnet.

6. The apparatus of claim 5, the second time difference determination unit configured to:

according to the formula Δ t₂＝t_p2+t_r2-t_r1-T, determining said second time difference value;

wherein, Δ t₂Is the time difference; t is t_r1Is the start rise time of the impact magnet; t is t_p2The starting flat top time of the beam chopper; t is t_r2Is the start-up rise time of the beam chopper; and T is the beam current duration.

7. The apparatus of claim 5, further comprising:

a first delay time determination module configured to determine a delay time for injecting particles into the accelerator sync ring based on a distance between a particle output of the beam chopper and an ion input of the sync ring after determining a first time difference for starting the beam chopper after starting the strike magnet;

a first updating unit configured to add the delay time to the first time difference value for updating.

8. The apparatus of claim 5, further comprising:

a second delay time determination module configured to determine a delay time for injecting particles into the accelerator sync ring based on a distance between a particle output of the beam chopper and an ion input of the sync ring after determining a second time difference for activating the beam chopper after the striking magnet is activated.

And the second updating unit is arranged to add the delay time to the second time difference value for updating.

9. A particle accelerator comprising a beam chopper and a strike magnet, further comprising:

at least one processor;

a storage device arranged to store one or more programs;

the at least one program is executed by the at least one processor to cause the at least one processor to implement an accelerator injected particle count control method as claimed in any one of claims 1 to 4.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, implements an accelerator injection population control method according to any one of claims 1 to 4.

Technical Field

The invention relates to the technical field of medical equipment, in particular to a method and a device for controlling the number of particles injected by an accelerator, the accelerator and a storage medium.

Background

In biomedicine, when a tumor is treated by radiation, a particle accelerator is used to accelerate charged particles so that the particles acquire energy. To reduce the loss of healthy cells from the side effects of radiation therapy, it is often necessary to set the number of particles required for radiation therapy prior to performing the radiation therapy.

Disclosure of Invention

The applicant provides an accelerator injected particle number control method and device, an accelerator and a storage medium aiming at the defects in the prior art, so as to realize the control of the injected particle number of the particle accelerator without influencing the stability, hardware composition and manufacturing cost of the particle accelerator.

The technical scheme adopted by the invention is as follows:

the embodiment of the application provides a method for controlling the number of particles injected into an accelerator, which is applied to a particle accelerator and comprises the following steps: determining the beam duration of the particle beam to be injected into the accelerator according to the preset number of the injected particles and the beam intensity of the particle beam of the accelerator; the beam duration is the overlapping duration between the starting flat top time of the impact magnet and the starting flat top time of the beam chopper; respectively determining the starting time of the impact magnet and the starting time of the beam chopper according to the beam current duration; and starting the impact magnet according to the starting time of the impact magnet, and starting the beam chopper according to the starting time of the beam chopper.

The embodiment of the present application further provides an accelerator injection particle number control device, configured on a particle accelerator, the device including: the device comprises a beam duration determining module, a starting moment determining module and a starting module.

The beam duration determining module is set to determine the beam duration of the particle beam to be injected into the accelerator according to the preset number of the injected particles and the beam intensity of the particle beam of the accelerator; the beam duration is the overlapping duration between the starting flat top time of the impact magnet and the starting flat top time of the beam chopper;

the starting time determining module is configured to respectively determine the starting time of the impact magnet and the starting time of the beam chopper according to the beam current duration;

and the starting module is used for starting the impact magnet according to the starting time of the impact magnet and starting the beam chopper according to the starting time of the beam chopper.

The embodiment of the present application further provides a particle accelerator, including a beam chopper and a magnet, further including:

one or more processors;

a storage device arranged to store one or more programs;

the one or more programs are executable by the one or more processors to cause the one or more processors to implement an accelerator injected particle count control method as provided above.

An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements an accelerator injection particle count control method as provided above.

Drawings

Fig. 1 is a schematic diagram of a hardware structure of a particle accelerator used in an embodiment of the present application.

Fig. 2 is a flowchart of an accelerator injection particle count control method in a first embodiment of the present application.

Fig. 3A is a flowchart of an accelerator injected particle count control method in a second embodiment of the present application.

Fig. 3B is a schematic diagram of pulse signals of the impact magnet and the beam chopper in the second embodiment of the present application.

Fig. 4A is a flowchart of an accelerator injection particle count control method in a third embodiment of the present application.

Fig. 4B is a schematic diagram of pulse signals of the impact magnet and the beam chopper in the third embodiment of the present application.

Fig. 5 is a block diagram of an accelerator injection particle number control device according to a fourth embodiment of the present application.

Fig. 6 is a schematic hardware structure diagram of a terminal device according to a fifth embodiment of the present application.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

The particle accelerator adopted in the technical solutions of the embodiments of the present application can refer to the hardware structure diagram of the particle accelerator shown in fig. 1. The accelerator includes: an injector 110, a beam chopper 120, a impingement magnet 130, and an accelerator sync ring 140, wherein the particle output of the injector 110 is coupled to the particle input of the beam chopper 120 and the particle output of the beam chopper 120 is coupled to the particle input of the accelerator sync ring 140.

An injector 110 arranged to inject a particle beam into the accelerator synchronizer ring 140; the beam chopper 120 is configured to define a beam duration of the population injected into the acceleration sync ring 140 by the injector 110; the impact magnet 130 is mounted at the ion input end of the accelerator sync ring 140 to correct the direction of travel of the plurality of particles in the beam of particles delivered by the beam chopper. The implanter 110 includes an ion source 111 configured to ionize gaseous ions of elements to be implanted into ions, and determine the type and beam intensity of the particle beam to be implanted.

On the basis of the particle accelerator shown in fig. 1, the technical solutions of the embodiments of the present application are discussed.