Common-source multi-beam neutron capture therapy system

Abstract

The utility model discloses a common-source multi-beam neutron capture therapy system, and the system comprises an installation chamber which defines a first chamber and a plurality of second chambers communicated with the first chamber; the high-voltage power supply system is arranged in the first chamber; the plurality of beam acceleration devices are arranged in the corresponding second chambers; the ion source system is arranged in the first chamber and / or the second chamber, the ion source system is used for providing a plurality of ion beams, and the high-voltage power supply system drives the ion beams to accelerate in the beam acceleration device; each neutron target device is used for receiving the ion beams accelerated by the one or more beam acceleration devices and making the ion beams bombard neutron beams; and a control system. According to the common-source multi-beam neutron capture therapy system provided by the embodiment of the utility model, a plurality of treatment rooms can work at the same time under the condition that the beam intensity of each treatment room is not reduced, or the treatment time of a single treatment room is reduced, the input-output ratio is improved, and the treatment efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and particularly relates to a common-source multi-beam neutron capture therapy system. Background Art

[0002] BNCT (Boron Neutron Capture Therapy) is a new type of tumor treatment technology. The treatment method is to introduce 10 B nuclide into a tumor-targeting drug, and then inject or take it into the patient's body. After the drug accumulates in the tumor tissue, the tumor site is irradiated with a neutron beam to cause a boron neutron capture reaction, and the secondary radiation and recoil nuclei generated by the reaction play a killing role on tumor cells.

[0003] Obtaining a neutron source that meets the treatment requirements and is convenient for installation in a hospital is one of the keys to the popularization of BNCT technology. The neutron sources that can be used for BNCT are mainly reactor neutron sources and accelerator neutron sources. It is difficult to promote reactor neutron sources in hospitals, and accelerator neutron sources are the main solutions suitable for promoting BNCT neutron sources in hospitals.

[0004] The beam current intensity required for the neutron source used in BNCT is very high. In the prior art, usually, one ion accelerator can only be equipped with one neutron target station, and the output beam current can only supply one treatment room. One treatment room can only treat one patient at the same time, and the treatment time is about 1 hour. Under the current technical conditions, the accelerator-driven ion beam current intensity is limited. If one accelerator supplies more than two treatment rooms, these treatment rooms cannot work simultaneously, or they are forced to work simultaneously at the cost of increasing the treatment time by distributing the ion beam. That is to say, the beam current intensity provided by the neutron capture therapy system accelerator in the prior art is low, the efficiency is low, and the functions of simultaneous treatment of multiple treatment rooms or shortening the treatment time cannot be achieved by a single accelerator. In addition, due to the large volume of the power supply, a large safe use space, and high cost, each power supply only drives a set of accelerators to generate neutron beams, and the equipment safety management, site, and cost performance are too low.

[0005] In addition, the ion source working at a high voltage potential generates neutrons through the form of working gas discharge. Therefore, it is necessary to continuously supply working gas to the ion source, and the ion accelerator must work in an ultra-high vacuum environment to maintain good and stable high-voltage insulation performance. The working gas in the ion source will flow into the acceleration tube and then be pumped away by a vacuum pump. When the ion source is only connected to one acceleration tube, the pumping speed is insufficient, resulting in insufficient vacuum in the acceleration tube, and it is easy to cause discharge breakdown during use. Summary of the Invention

[0006] The purpose of the embodiment of the present utility model is to provide a common-source multi-beam neutron capture therapy system, so as to solve the problems in the prior art that the ion accelerator has low utilization efficiency and cannot meet the simultaneous treatment of multiple treatment rooms or has a long treatment time.

[0007] The embodiment of the present utility model provides a common-source multi-beam neutron capture therapy system, including:

[0008] An installation room, defining a first chamber and a plurality of second chambers communicating with the first chamber;

[0009] A high-voltage power supply system, arranged in the first chamber;

[0010] A plurality of beam acceleration devices, arranged in the corresponding second chambers;

[0011] An ion source system, arranged in the first chamber and / or the second chamber, the ion source system is used to provide a plurality of ion beams, the ion source system is respectively connected to the high-voltage power supply system and the beam acceleration device, and the high-voltage power supply system drives the ion beam to be accelerated in the beam acceleration device;

[0012] At least one neutron target device, each neutron target device is respectively used to receive the ion beam accelerated by one or more of the beam acceleration devices and bombard the ion beam to generate a neutron beam;

[0013] A control system, respectively connected to the high-voltage power supply system, the beam acceleration device, the ion source system and the neutron target device to control the operation of the high-voltage power supply system, the beam acceleration device, the ion source system and the neutron target device.

[0014] Further, at least one third chamber communicating with the second chamber is also defined in the installation chamber, one end of the third chamber is arranged adjacent to the ion source system, and the common-source multi-beam neutron capture system further includes at least one vacuum acquisition system, and the vacuum acquisition system is arranged in the corresponding third chamber;

[0015] The beam acceleration device includes:

[0016] A first acceleration tube, arranged in the second chamber to accelerate the ion beam and used to extract the working gas entering the first acceleration tube;

[0017] A first pump, connected to the end of the first acceleration tube far from the ion source system to pump the working gas out of the first acceleration tube;

[0018] The vacuum acquisition system includes:

[0019] A second acceleration tube, arranged in the third chamber for extracting the working gas entering the second acceleration tube;

[0020] A second pump, connected to one end of the second acceleration tube away from the ion source system for pumping the working gas out of the second acceleration tube.

[0021] Furthermore, the ion source system further includes:

[0022] A Faraday cage, arranged in the first chamber and / or the second chamber and respectively connected to the high-voltage power supply system and the beam acceleration device. The Faraday cage defines a placement cavity, and the Faraday cage is provided with a plurality of through holes communicating with the placement cavity, and the through holes are arranged towards the corresponding beam acceleration device;

[0023] A plurality of plasma chambers, arranged in the placement cavity for providing plasma;

[0024] A plurality of microwave sources, arranged in the placement cavity for providing energy for forming the plasma;

[0025] A plurality of ion source gas supply devices, arranged in the placement cavity for providing working gas for forming the plasma;

[0026] A plurality of ion source extraction devices, arranged in the placement cavity and corresponding to the through holes for extracting the ion beam from the corresponding plasma;

[0027] An ion source power supply device, providing voltage and current for the microwave source, the ion source extraction device and the ion source gas supply device.

[0028] Furthermore, the ion source power supply device includes:

[0029] A power supply, arranged in the placement cavity for providing voltage and current for the microwave source, the ion source extraction device and the ion source gas supply device;

[0030] A generator, arranged in the placement cavity and connected to the power supply for supplying power to the power supply;

[0031] A motor, arranged in the first chamber for driving the generator to generate electricity;

[0032] A transmission rod, used for connecting the generator and the motor.

[0033] Furthermore, the high-voltage power supply system includes:

[0034] A power supply body, used for driving the ion beam to be accelerated in the beam acceleration device;

[0035] A connecting rod for connecting the power supply body and the Faraday cage.

[0036] Furthermore, the common-source multi-beam neutron capture therapy system further includes:

[0037] A plurality of deflection devices, each of which is connected to a corresponding beam acceleration device to converge the ion beams accelerated by the plurality of beam acceleration devices onto one neutron target device.

[0038] Furthermore, the first chamber and the second chamber are respectively formed as columnar chambers;

[0039] The axis of the first chamber and the axis of the second chamber are perpendicular to each other; and / or,

[0040] The axis of the first chamber and the axis of the second chamber coincide with each other; and / or,

[0041] The included angle between the axis of the first chamber and the axis of the second chamber is an acute angle or an obtuse angle.

[0042] Furthermore, the common-source multi-beam neutron capture therapy system further includes:

[0043] At least one treatment chamber, in which at least one of the neutron target devices is provided.

[0044] Furthermore, the common-source multi-beam neutron capture therapy system further includes:

[0045] An insulating gas circulation system, which is respectively connected to the first chamber and the second chamber to provide circulating insulating gas for the first chamber and the second chamber.

[0046] Furthermore, the common-source multi-beam neutron capture therapy system further includes:

[0047] A vacuum acquisition system, which is respectively connected to the plurality of beam acceleration devices to provide a vacuum environment for the beam acceleration devices.

[0048] Furthermore, the common-source multi-beam neutron capture therapy system further includes:

[0049] A water cooling system, which is respectively connected to the plurality of ion source systems and the neutron target devices to cool the ion source systems and the neutron target devices.

[0050] According to the common-source multi-beam neutron capture therapy system of the embodiments of the present utility model, by separately arranging and integrating a high-voltage power supply system and a plurality of beam acceleration devices in an installation room, the high-voltage power supply system drives the plurality of beam acceleration devices to accelerate ion beams, which can achieve the purpose of configuring multiple treatment rooms with a single set of acceleration equipment, can enable multiple treatment rooms to work simultaneously without reducing the beam intensity of each treatment room, or reduce the treatment time of a single treatment room, greatly improving the input-output ratio, enhancing the treatment efficiency, and reducing the treatment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 FIG. 6 is a schematic structural diagram of a common-source multi-beam neutron capture therapy system according to an embodiment of the present utility model;

[0052] Figure 2 FIG. 10 is a top view of a common-source multi-beam neutron capture therapy system according to another embodiment of the present utility model.

[0053] REFERENCE SIGNS

[0054] Common-source multi-beam neutron capture therapy system 100;

[0055] Installation room 10; First chamber 11; Second chamber 12; Third chamber 13;

[0056] High-voltage power supply system 20; Power supply body 21; Connecting rod 22; Power supply auxiliary component 23;

[0057] Beam acceleration device 30; First accelerator 31; First pump 32;

[0058] Ion source system 40; Faraday cage 41; Ion source extraction device 42; Ion source power supply device 43; Power supply 431; Motor 432; Generator 433; Transmission rod 434;

[0059] Neutron target device 50; Beam hitting target pipeline 51; Neutron conversion target 52;

[0060] Vacuum acquisition system 60; Second acceleration tube 61; Second pump 62. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0061] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0062] In the description and claims of the present utility model, terms such as "first" and "second" are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data used can be interchanged under appropriate circumstances, so that the embodiments of the present utility model can be implemented in an order other than those illustrated or described herein. In addition, "and / or" in the description and claims indicates at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0063] The following will be combined with Figure 1 and Figure 2 , and the common-source multi-beam neutron capture therapy system 100 provided by the embodiments of the present utility model will be described in detail through specific embodiments and their application scenarios.

[0064] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0065] As Figure 1 shown, the common-source multi-beam neutron capture therapy system 100 according to the embodiments of the present utility model includes an installation chamber 10, a high-voltage power supply system 20, a plurality of beam acceleration devices 30, an ion source system 40, at least one neutron target device 50, and a control system (not shown).

[0066] Specifically, the installation chamber 10 defines a first chamber 11 and a plurality of second chambers 12 communicating with the first chamber 11. The high-voltage power supply system 20 is arranged in the first chamber 11, the beam acceleration devices 30 are arranged in the corresponding second chambers 12, and the ion source system 40 is arranged in the first chamber 11 and / or the second chambers 12. The ion source system 40 is used to provide a plurality of ion beams, and the ion source system 40 is respectively connected to the high-voltage power supply system 20 and the beam acceleration devices 30. The high-voltage power supply system 20 drives the ion beams to accelerate in the beam acceleration devices 30. Each neutron target device 50 is respectively used to receive the ion beams accelerated by one or more beam acceleration devices 30 and bombard the ion beams to generate neutron beams. The control system is respectively connected to the high-voltage power supply system 20, the beam acceleration devices 30, the ion source system 40, and the neutron target device 50 to control the operation of the high-voltage power supply system 20, the beam acceleration devices 30, the ion source system 40, and the neutron target device 50.

[0067] In other words, the common-source multi-beam neutron capture therapy system 100 according to the embodiment of the present invention belongs to a low-energy proton acceleration system driven by a DC high voltage. The whole system includes a high-voltage power supply system 20 and a multi-channel beam acceleration device 30. The installation chamber 10 is a pressure vessel structure with multiple arms. A first chamber 11 is defined in one of the arms, and second chambers 12 are respectively defined in the remaining multiple arms. One end of each second chamber 12 is respectively communicated with one end of the first chamber 11. The high-voltage power supply system 20 is arranged in the first chamber 11, and each beam acceleration device 30 is respectively arranged in the corresponding second chamber 12. As Figure 1 shown, the ion source system 40 can be located in the first chamber 11. In addition, the ion source system 40 can also be located in the second chamber 12, or a part is located in the first chamber 11 and another part is located in the second chamber 12. Among them, the high-voltage power supply system 20 is a high-voltage power supply, and this high-voltage power supply can adopt high-voltage generating devices such as a dynatron-type high-voltage generator, an air-core transformer-type high-voltage generator, and an insulated-core transformer-type high-voltage generator.

[0068] Furthermore, an ion source system 40 is provided at the connection of the multiple arms. The ion source system 40 is connected to the high-voltage power supply system 20, and the beam acceleration device 30 is connected to the ion source system 40. When it is necessary to accelerate the electron beam in the multi-channel beam acceleration device 30, it is not necessary to change the voltage of the high-voltage power supply system 20. Only the driving power of the high-voltage power supply system 20 needs to be increased. If a beam acceleration device 30 requires one unit of driving power, then N beam acceleration devices 30 will require N units of driving power. That is to say, for each additional beam acceleration device 30, a second chamber 12 is added, and at the same time, the driving power of the high-voltage power supply system 20 is increased by one unit, but the installation structure and voltage of the high-voltage power supply system 20 remain unchanged. Each beam acceleration device 30 can share some components or auxiliary systems to reduce the manufacturing cost. The number of neutron target devices 50 can be equal to the number of beam acceleration devices 30. The neutron target device 50 is generally called a beam shaping assembly (BSA). The neutron target device 50 mainly includes a beam hitting pipe 51, a neutron conversion target 52, a moderator (not shown), and other structures. After the ion beam hits the target through the neutron target device 50, the neutron field distribution required for BNCT is formed.

[0069] The control system is used to operate and control the common-source multi-beam neutron capture therapy system 100. The control system can control each part of the beam acceleration device 30 to work normally, ensure that the beam acceleration device 30 outputs the required ion species and energy, monitor the working state of the beam acceleration device 30 in real time, implement safety interlocking, cooperate with the beam acceleration device 30 in a linkage manner, and analyze the operation data of the beam acceleration device 30, etc.

[0070] According to an embodiment of the present invention, asFigure 1 As shown, the installation chamber 10 has three support arms. Among them, a first chamber 11 is defined within the support arm in the vertical direction, and two support arms in the horizontal direction respectively define second chambers 12. The high-voltage power supply system 20 is arranged in the first chamber 11, and two beam acceleration devices 30 are respectively arranged in the corresponding second chambers 12. Each beam acceleration device 30 is respectively matched with a neutron target device 50.

[0071] Furthermore, each neutron target device 50 can correspond to a treatment chamber. Thus, the common-source multi-beam neutron capture therapy system 100 can enable multiple treatment chambers to work simultaneously without weakening the neutron beam intensity obtained by each treatment chamber. In addition, the ion beams accelerated by different beam acceleration devices 30 can also be directed towards the same neutron target device 50, thereby increasing the beam intensity of the neutron beam bombarded by a single neutron target device 50, enabling the single neutron target device 50 to obtain a neutron beam with sufficient intensity and further reducing the patient treatment time.

[0072] Therefore, for the common-source multi-beam neutron capture therapy system 100 according to the embodiment of the present invention, by separately arranging and integrating a high-voltage power supply system 20 and multiple beam acceleration devices 30 in an installation chamber 10, enabling the high-voltage power supply system 20 to drive multiple beam acceleration devices 30 to accelerate ion beams, it can achieve the purpose of configuring multiple treatment chambers with a single set of acceleration equipment, can enable multiple treatment chambers to work simultaneously without reducing the beam intensity of each treatment chamber, or reduce the treatment time of a single treatment chamber, greatly improving the input-output ratio, enhancing the treatment efficiency, and reducing the treatment cost. At the same time, since the driving ability of the high-voltage power supply system 20 is much greater than the requirements of a single beam acceleration device 30, by adopting a set of high-voltage power supply system 20, multiple beam acceleration devices 30 can be driven to work simultaneously and be respectively used for different treatment chambers, reducing the equipment input cost.

[0073] Furthermore, the ion source system 40 that works suspended at a high voltage potential generates neutrons through the form of working gas discharge. Therefore, it is necessary to continuously supply working gas to the ion source system 40, and the beam acceleration device 30 must work in an ultra-high vacuum environment to maintain good and stable high-voltage insulation performance. The beam acceleration device 30 includes a first acceleration tube 31 and a first pump 32. The working gas in the ion source system 40 will flow into the first acceleration tube 31 and then be pumped away by the first pump 32. When the ion source system 40 is only connected to one beam acceleration device 30, the insufficient pumping speed of the beam acceleration device 30 itself will cause the internal vacuum degree to be insufficient, and it is prone to discharge breakdown phenomena during use. To improve the vacuum degree, a relatively complex structure is usually designed, such as adding a molecular pump storage cavity, etc. In this application, in order to maintain the vacuum degree of multiple beam acceleration devices 30, according to an embodiment of the present invention, as Figure 2As shown, a second acceleration tube 61 and a second pump 62 dedicated to extracting vacuum are provided. The second acceleration tube 61 and the second pump 62 form a vacuum acquisition system 60, which can timely extract the working gas in the ion source system 40 and maintain the vacuum degree of the acceleration device 30.

[0074] That is to say, by adopting a set of high-voltage power supply system 20, multiple beam acceleration devices 30 can be driven to work simultaneously. According to specific requirements, a second acceleration tube 61 and a second pump 62 for side vacuum extraction can be configured for each beam acceleration device 30, or several beam acceleration devices 30 can share a second acceleration tube 61 and a second pump 62 for side vacuum extraction. Thus, the pumping speed of the working gas in the ion source system 40 is greatly improved, the vacuum degree in all beam acceleration devices 30 is enhanced, the ignition probability of the beam acceleration device 30 is reduced, and the insulation reliability of the whole accelerator is improved.

[0075] According to an embodiment of the present invention, the ion source system 40 further includes a Faraday cage 41, a plurality of plasma chambers (not shown), a plurality of microwave sources (not shown), a plurality of ion source gas supply devices (not shown), a plurality of ion source extraction devices 42, and an ion source power supply device 43.

[0076] Specifically, the Faraday cage 41 is arranged in the first chamber 11 and / or the second chamber 12 and is respectively connected to the high-voltage power supply system 20 and the beam acceleration device 30. The Faraday cage 41 defines a placement cavity. The Faraday cage 41 is provided with a plurality of through holes communicating with the placement cavity, and the through holes are arranged facing the corresponding beam acceleration device 30. Plasma is generated in the plasma chamber. After the positive ions in the plasma are extracted, an ion beam is formed. The microwave output by the microwave source is fed into the plasma chamber to provide energy for forming the plasma. The ion source gas supply device includes a gas cylinder and a gas flow meter. A certain amount of working gas is stored in the gas cylinder to provide the working gas for forming the plasma in the plasma chamber. The gas flow meter can input the working gas in the gas cylinder into the plasma chamber as needed. It should be noted that a plurality of plasma chambers can also share a gas cylinder. The ion source extraction device 42 is used to extract the electron beam. The ion source extraction device 42 includes an extraction electrode and an extraction power supply. Among them, the extraction electrode forms an electric field for extracting the ion beam, and the extraction power supply supplies power to the extraction electrode. The ion source power supply device 43 supplies power to the above-mentioned microwave source, extraction power supply, and gas flow meter, which are auxiliary equipment of the ion source.

[0077] That is to say, the Faraday cage 41 can be located in the chamber at the connection of the first chamber 11 and the plurality of second chambers 12, or can be located in the first chamber 11 or the second chamber 12. The Faraday cage 41 is connected to the high-voltage power supply system 20. The positive high-voltage end of the beam acceleration device 30 is connected to the Faraday cage 41, and the grounded end of the beam acceleration device 30 is connected to the neutron target device 50 or the installation chamber 10. Multiple sets of ion sources are arranged inside the Faraday cage 41. Each set of ion sources is respectively composed of a plasma chamber, a microwave source, an ion source gas supply device, an ion source extraction device 42, and an ion source power supply device. Each set of ion sources corresponds to a beam acceleration device 30. A plurality of holes are opened on the Faraday cage 41. The outside of each hole is connected to the first acceleration tube 31 and the second acceleration tube 61, and the inside is connected to the output hole of the ion source extraction device 42. The ion source extraction device 42 is installed between the ion source and the inlet of the beam acceleration device 30 for extracting the ion beam. The ion source extraction device 42 includes one or more high-voltage electrodes, and each high-voltage electrode requires a high-voltage power supply. Inside the Faraday cage 41, in addition to the ion source and the ion source extraction device 42, relevant ion source test or control components are also included.

[0078] Preferably, the ion source power supply device 43 includes a power supply 431, a motor 432, a generator 433, and a transmission rod 434.

[0079] Specifically, the power supply 431 is arranged in the placement chamber to provide voltage and current for the microwave source, the ion source extraction device 42, and the ion source gas supply device. The generator 433 is arranged in the placement chamber and is connected to the power supply 431 to supply power to the power supply 431. The motor 432 is arranged in the first chamber 11 to drive the generator 433 to generate electricity. The transmission rod 434 is used to connect the generator 433 and the motor 432.

[0080] That is to say, if the ion source in the Faraday cage 41 is to work normally, a driving force needs to be provided for the ion source. However, the potential in the Faraday cage 41 is as high as several million volts, and normal power supply cannot be achieved. Therefore, a small generator 433 is used to supply power to the power supply 431, and the power supply 431 drives the ion source to work. In order to drive this generator 433, a motor 432 that can drive the generator 433 to generate electricity needs to be set. The motor 432 can be arranged in the first chamber 11. The generator 433 is a high-voltage suspended generator, and the motor 432 is connected to the generator 433 through an insulating transmission rod 434. It should be noted that all the ion sources in the Faraday cage 41 can share a power supply 431, a motor 432, a generator 433, and a transmission rod 434 to reduce the manufacturing cost.

[0081] According to an embodiment of the present invention, the high-voltage power supply system 20 includes a power supply body 21 and a connecting rod 22.

[0082] Specifically, the power supply body 21 is used to drive the ion beam to be accelerated in the beam acceleration device 30. The connecting rod 22 is used to connect the power supply body 21 and the Faraday cage 41. The driving voltage of the power supply body 21 is output to the Faraday cage 41 through the connecting rod 22. In addition, the high-voltage power supply system 20 may further include other power supply auxiliary components 23 to assist in the fixing or installation of the power supply body 21.

[0083] Optionally, the common-source multi-beam neutron capture therapy system 100 further includes a plurality of deflection devices (not shown). The deflection devices are connected to the corresponding beam acceleration devices 30 to converge the ion beams accelerated by the plurality of beam acceleration devices 30 to a single neutron target device 50, thereby increasing the beam current intensity of the ion beams received by the single neutron target device 50. The deflection devices mainly function to change the transmission route of the ion beams, and can converge the ion beams in different transmission routes to the same neutron target device 50, increase the beam current intensity of the single neutron target device 50, and reduce the treatment duration. In the existing BNCT product solutions, due to the limitation of the accelerator development level, the neutron target device 50 can only receive the electron beams from one beam acceleration device 30, and the beam current intensity is low. In this case, the typical irradiation time for each treatment of a patient is 1 hour. If the common-source multi-beam neutron capture therapy system 100 in the present application is adopted, multiple ion beams can be deflected to the same neutron target device 50 through the deflection devices, so that the beam current intensity of the neutron target device 50 is increased several times, thereby reducing the treatment time several times. For example, if three neutron target devices 50 are designed and the three neutron beams are concentrated in the same treatment room, the typical treatment time can be shortened to 20 minutes, greatly improving the treatment efficiency and the patient experience. That is to say, by adopting a set of high-voltage power supply system 20, multiple beam acceleration devices 30 can be driven to work simultaneously. Further, the ion beams accelerated by multiple beam acceleration devices 30 can be converged to the same treatment room through the deflection devices to further shorten the treatment time, reduce the cost of the equipment itself and the treatment cost.

[0084] In an embodiment of the present utility model, the first chamber 11 and the second chamber 12 are respectively formed as columnar chambers.

[0085] Further, the axis of the first chamber 11 and the axis of the second chamber 12 are perpendicular to each other. Optionally, the axis of the first chamber 11 and the axis of the second chamber 12 coincide with each other. Optionally, the included angle between the axis of the first chamber 11 and the axis of the second chamber 12 is an acute angle or an obtuse angle.

[0086] Specifically, the second chamber 12 is mainly used to place the beam acceleration device 30. The extending direction of the second chamber 12 is consistent with the moving direction of the ion beam in the corresponding beam acceleration device 30, ensuring that the ion beam can be emitted to the neutron target device 50 at different positions. Among them, the first chamber 11 can be a cylindrical chamber extending in the vertical direction, and the second chamber 12 can be an installation chamber extending in the horizontal direction. The second chamber 12 can also be an installation chamber extending in the vertical direction, or the second chamber 12 can have a certain inclination angle with the vertical direction, such as 60 degrees, 90 degrees, 120 degrees, etc., so as to facilitate providing the accelerated ion beam for the treatment rooms on different floors or in different orientations.

[0087] According to an embodiment of the present invention, the common-source multi-beam neutron capture therapy system 100 further includes at least one treatment room (not shown). At least one neutron target device 50 is provided in the treatment room. If multiple neutron target devices 50 are provided in one treatment room, irradiation treatment of a patient at different angles can be achieved. In addition, each beam acceleration device 30 can also be configured with multiple treatment rooms. There are two functions of configuring multiple treatment rooms for multiple beam acceleration devices 30: one is that when a certain treatment room is working, the remaining treatment rooms can perform preparation work such as patient positioning; the other is that some types of tumors may require a low dose, so multiple treatment rooms can also work simultaneously.

[0088] Preferably, the common-source multi-beam neutron capture therapy system 100 further includes an insulating gas circulation system (not shown). The insulating gas circulation system is respectively connected to the first chamber 11 and the second chamber 12 to provide circulating insulating gas for the first chamber 11 and the second chamber 12.

[0089] That is to say, the first chamber 11 and the second chamber 12 can share the insulating gas circulation system, and there is no need to additionally increase the insulating gas circulation system due to the increase in the number of the second chambers 12. Among them, the insulating gas circulation system can be a sulfur hexafluoride insulating gas system, further increasing the insulating performance of the beam acceleration device 30.

[0090] In an embodiment of the present invention, the common-source multi-beam neutron capture therapy system 100 further includes a water cooling system (not shown). Many components in the installation room 10 will generate heat. The water cooling system is respectively connected to multiple ion source systems 40 and neutron target devices 50 to cool components such as the ion source system 40 and the neutron target device 50.

[0091] In addition, the common-source multi-beam neutron capture therapy system 100 further includes a mechanical support system (not shown), which is mainly used to support components such as the beam acceleration device 30 in the first chamber 11 and the second chamber 12. Because for the horizontally installed beam acceleration device 30, the middle Faraday cage 41 is in a suspended state, which may cause the beam acceleration device 30 to bend, so a mechanical support system is required.

[0092] Furthermore, the common-source multi-beam neutron capture therapy system 100 further includes a local radiation protection system (not shown), which is used for ray shielding at positions with strong radiation in the system.

[0093] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims, and all of them belong to the protection scope of the present invention.

Claims

1. A common-source multi-beam neutron capture therapy system, characterized in that Comprising: An installation chamber, defining a first chamber and a plurality of second chambers communicating with the first chamber; A high-voltage power supply system, provided in the first chamber; A plurality of beam acceleration devices, provided in the corresponding second chambers; An ion source system, provided in the first chamber and / or the second chamber, the ion source system being configured to provide a plurality of ion beams, the ion source system being respectively connected to the high-voltage power supply system and the beam acceleration devices, and the high-voltage power supply system driving the ion beams to be accelerated in the beam acceleration devices; At least one neutron target device, each neutron target device being respectively configured to receive the ion beams accelerated by one or more of the beam acceleration devices and cause the ion beams to bombard out neutron beams; A control system, respectively connected to the high-voltage power supply system, the beam acceleration devices, the ion source system and the neutron target device to control the operation of the high-voltage power supply system, the beam acceleration devices, the ion source system and the neutron target device.

2. The common-source multi-beam neutron capture therapy system according to claim 1, characterized in that, At least one third chamber communicating with the second chamber is further defined in the installation chamber, one end of the third chamber is disposed adjacent to the ion source system, and the common-source multi-beam neutron capture system further includes at least one vacuum acquisition system, and the vacuum acquisition system is provided in the corresponding third chamber; The beam acceleration device includes: A first acceleration tube, provided in the second chamber to accelerate the ion beams and configured to extract the working gas entering the first acceleration tube; A first pump, connected to one end of the first acceleration tube away from the ion source system to pump the working gas out of the first acceleration tube; The vacuum acquisition system includes: A second acceleration tube, provided in the third chamber to extract the working gas entering the second acceleration tube; A second pump, connected to one end of the second acceleration tube away from the ion source system to pump the working gas out of the second acceleration tube.

3. The common-source multi-beam neutron capture therapy system according to claim 2, wherein The ion source system further includes: A Faraday cage, provided in the first chamber and / or the second chamber and respectively connected to the high-voltage power supply system and the beam acceleration devices, the Faraday cage defining a placement cavity, and a plurality of through holes communicating with the placement cavity are provided on the Faraday cage, and the through holes are disposed towards the corresponding beam acceleration devices; A plurality of plasma chambers, provided in the placement cavity to provide plasma; A plurality of microwave sources, provided in the placement cavity to provide energy for forming the plasma; A plurality of ion source gas supply devices, provided in the placement cavity to provide working gas for forming the plasma; A plurality of ion source extraction devices, provided in the placement cavity and corresponding to the through holes to extract the ion beams from the corresponding plasmas; An ion source power supply device, configured to provide voltage and current for the microwave sources, the ion source extraction devices and the ion source gas supply devices.

4. The common-source multi-beam neutron capture therapy system according to claim 3, wherein The ion source power supply device includes: A power supply, provided in the placement cavity to provide voltage and current for the microwave sources, the ion source extraction devices and the ion source gas supply devices; A generator, which is arranged in the placement cavity and connected to the power supply to supply power to the power supply; A motor, which is arranged in the first chamber to drive the generator to generate electricity; A transmission rod, which is used to connect the generator and the motor.

5. The common-source multi-beam neutron capture therapy system according to claim 3, characterized in that, The high-voltage power supply system includes: A power supply body, which is used to drive the ion beam to accelerate in the beam acceleration device; A connecting rod, which is used to connect the power supply body and the Faraday cage.

6. The common-source multi-beam neutron capture therapy system according to claim 2, characterized in that It further includes: A plurality of deflection devices, which are connected to the corresponding beam acceleration devices to converge the ion beams accelerated by the plurality of beam acceleration devices to one neutron target device.

7. The common source multi-beam neutron capture therapy system according to claim 2, wherein The first chamber and the second chamber are respectively formed as columnar chambers; The axis of the first chamber and the axis of the second chamber are perpendicular to each other; and / or, The axis of the first chamber and the axis of the second chamber coincide with each other; and / or, The included angle between the axis of the first chamber and the axis of the second chamber is an acute angle or an obtuse angle.

8. The neutron capture therapy system with a common source and multiple beams according to claim 2, characterized in that, It further includes: At least one treatment room, in which at least one neutron target device is arranged.

9. The common source multi-beam neutron capture therapy system according to claim 2, wherein It further includes: An insulating gas circulation system, which is respectively connected to the first chamber and the second chamber to provide circulating insulating gas for the first chamber and the second chamber.

10. The common source multi-beam neutron capture therapy system according to claim 1, characterized in that, It further includes: A water cooling system, which is respectively connected to a plurality of ion source systems and the neutron target device to cool the ion source systems and the neutron target device.

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