Compact multipurpose proton beam system

Abstract

The utility model discloses a compact multipurpose proton beam system, belongs to the field of radiotherapy, and solves the problem that the existing proton beam system has a single treatment terminal type. The superconducting isochronous cyclotron system is connected to the two-way selection system through the beam adjusting system, the two-way selection system comprises a two-way dipole magnet and two branch selection systems, and the two branch selection systems are connected to the rear end of the two-way dipole magnet in parallel. The system also comprises a beam transport system, and the beam transport system is composed of a first treatment terminal section, a second treatment terminal section and a third treatment terminal section. One branch selection system is connected to the fixed experiment beam transport system through the first treatment terminal section, the other branch selection system is connected to the fixed pen-shaped beam transport system through the second treatment terminal section, the third treatment terminal section is a branch of the second treatment terminal section, and the third treatment terminal section is connected to the rotary beam transport system. According to the utility model, the bidirectional selection system design is utilized, and multi-type and multi-purpose treatment terminal beam irradiation is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of radiotherapy, specifically relates to a compact multipurpose proton beam system. BACKGROUND

[0002] The proton therapy system uses proton rays to irradiate tumor lesions. After being accelerated by an accelerator, the protons are modulated in energy in an energy selection system, and then transported to a treatment terminal by a beam transport system and incident on the human body. At the beginning of the incident on the human body, the proton rays release very limited energy, but after reaching a certain depth, the rays release a large amount of energy instantaneously, forming an energy release trajectory in the shape of a Bragg peak. Using this characteristic, the proton rays can irradiate tumor lesions with high dose while avoiding normal human tissues. The maximum efficacy is achieved while reducing the side effects of treatment. At present, China's advanced proton medical devices are still mainly imported, and there is still a large gap between the key technologies of proton therapy and the international. In view of the technical shortcomings of China's high-end radiotherapy equipment and the reality of the increasing number of cancer patients, it is urgent to research the key technologies of proton therapy.

[0003] In view of the actual needs of China's large, medium and small hospitals and scientific research institutions to build proton therapy centers, the proton therapy system is flexibly arranged under the limited field and multiple treatment terminals, and the number of transmission line components is reduced as much as possible to reduce the cost of the treatment system. The compact and flexible proton therapy beam transport system that can reduce the number of transmission line components is one of the urgent needs of medical and scientific research institutions to build proton therapy centers in the future.

[0004] The superconducting isochronous cyclotron supported by superconducting material has a significantly reduced accelerator diameter and weight, and a significantly reduced power consumption during operation. It has obvious advantages in terms of maximum output energy, flow intensity, extraction efficiency, beam emittance, floor space, energy consumption, etc. of the same type of accelerator, and is one of the main accelerator types for medical or scientific research institutions to layout proton therapy systems in the future. In order to further reduce the floor area occupied by the equipment, in addition to the accelerator main machine, the lightweight rotating beam transport system and the compact fixed pencil beam transport system are also one of the important equipment components of the compact multipurpose proton therapy system. In addition, in order to meet the potential scientific research needs of medical and scientific research institutions, an independent fixed experimental beam terminal can be reserved for related scientific research projects, and the fixed experimental beam terminal has the potential to be upgraded to a microbeam treatment terminal.

[0005] How to organically combine the fixed experimental beam transport system, the fixed pencil beam transport system and the rotating beam transport system together to develop a compact multipurpose proton beam system scheme that meets the cost expectations and clinical scientific research needs of various institutions is one of the important directions of the current key technology research and development of proton therapy. UTILITY MODEL CONTENTS

[0006] The utility model discloses a compact multipurpose proton beam system to solve the single type of treatment terminal, the layout is not compact enough, the problem of high cost of existing proton beam system.

[0007] The utility model discloses a compact multipurpose proton beam system, including acceleration chamber, first treatment room, second treatment room and third treatment room, be equipped with superconducting isochronous cyclotron system in acceleration chamber, be equipped with fixed experimental beam transport system in first treatment room, be equipped with fixed pen beam transport system in second treatment room, be equipped with rotating beam transport system in third treatment room,

[0008] Superconducting isochronous cyclotron system is connected to two -way selection system through beam regulation system, and two -way selection system includes two -way dipole magnet and two branch selection systems, and two branch selection systems are connected in parallel in the rear end of two -way dipole magnet.

[0009] Still include beam transport system, and the beam transport system is composed of treatment terminal one section, treatment terminal two section and treatment terminal three section, and one branch selection system is connected to fixed experimental beam transport system through treatment terminal one section, and another branch selection system is connected to fixed pen beam transport system through treatment terminal two section, and treatment terminal three section is the branch of treatment terminal two section, and treatment terminal three section is connected to rotating beam transport system.

[0010] As a further improvement of the utility model, the beam regulation system is sequentially provided with an adjusting system first two-way correction magnet, three adjusting system first quadrupole magnets, an adjusting system second two-way correction magnet, an adjusting system first vacuum chamber group, an energy reducer, a collimator, three adjusting system second quadrupole magnets, an adjusting system third two-way correction magnet and an adjusting system second vacuum chamber group along the proton beam direction.

[0011] As a further improvement of the utility model, the branch selection system is sequentially provided with two selection system first quadrupole magnets, a momentum selection slit, two selection system second quadrupole magnets and a selection system dipole magnet along the proton beam direction.

[0012] As a further improvement of the utility model, the treatment terminal one section is sequentially provided with a one section first vacuum chamber group, a one section first dipole magnet, a one section first two-way correction magnet, a one section first quadrupole magnet, a one section second dipole magnet, three one section second quadrupole magnets, a one section second vacuum chamber group, a one section second two-way correction magnet, two one section third quadrupole magnets, a one section third vacuum chamber group, a one section third two-way correction magnet, two one section fourth quadrupole magnets, a one section fourth vacuum chamber group and a one section fourth two-way correction magnet along the proton beam direction.

[0013] As a further improvement of the utility model, two experimental beam quadrupole magnets, an experimental beam X scanning magnet, an experimental beam Y scanning magnet, an experimental beam measuring system and an experimental beam equal center point are sequentially arranged along the proton beam direction in the fixed experimental beam transport system.

[0014] As a further improvement of the utility model, two second section first quadrupole magnets, a second section first vacuum chamber group, a second section first bidirectional correction magnet, a second section first diode magnet, three second section second quadrupole magnets, a second section second diode magnet, a second section third quadrupole magnet, a second section fourth quadrupole magnet, a second section second vacuum chamber group and a second section second bidirectional correction magnet are sequentially arranged along the proton beam direction in the treatment terminal second section.

[0015] As a further improvement of the utility model, two pen-shaped beam quadrupole magnets, a pen-shaped beam X scanning magnet, a pen-shaped beam Y scanning magnet, a pen-shaped beam measuring system and a pen-shaped beam equal center point are sequentially arranged along the proton beam direction in the fixed pen-shaped beam transport system.

[0016] As a further improvement of the utility model, a treatment terminal third section is connected behind the second section second diode magnet, and two third section first quadrupole magnets, a third section diode magnet, three third section second quadrupole magnets, a third section vacuum chamber group and two third section bidirectional correction magnets are sequentially arranged along the proton beam direction in the treatment terminal third section.

[0017] As a further improvement of the utility model, two rotating beam first quadrupole magnets, a rotating beam first diode magnet and two parallel rotating beam branches are sequentially arranged along the proton beam direction in the rotating beam transport system, the rotating beam branches sequentially comprise a rotating beam second quadrupole magnet, a rotating beam third quadrupole magnet, a rotating beam first vacuum chamber group, a rotating beam bidirectional correction magnet, two rotating beam fourth quadrupole magnets, a rotating beam second diode magnet, a rotating beam second vacuum chamber group, a rotating beam fifth quadrupole magnet, a rotating beam third diode magnet, a rotating beam X scanning magnet, a rotating beam Y scanning magnet, a rotating beam measuring system, and a rotating beam equal center point is arranged in the middle of the rotating beam measuring system of the two rotating beam branches.

[0018] The utility model designs three treatment rooms, which are respectively provided with a fixed experimental beam transport system, a fixed pen-shaped beam transport system and a rotating beam transport system to complete beam transport, realize multiple types of active point scanning beam irradiation function, and adapt to compact building layout. The second treatment room and the third treatment room retain a standard proton treatment beam distribution system, and can meet the clinical needs of proton treatment; and a long beam transport space, i.e. a treatment terminal first section, is reserved in front of the first treatment room, different performance proton beams can be distributed to the first treatment room by adjusting the magnet setting of the treatment terminal first section, so that the diversity needs of clinical and scientific research are met.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] 1. The utility model is based on the proton beam of superconducting isochronous cyclotron output, utilizes two -way selection system design, to fixed experiment beam transport system, fixed pencil beam transport system and rotating beam transport system supplies, can realize compact multipurpose proton beam system's layout, has the clinical treatment ability of proton radiotherapy simultaneously, gives consideration to the demand of scientific research and clinical trial project development of department, and has the potentiality of equipment upgrading.

[0021] 2. The utility model utilizes high -precision compact beam transport technology, through reasonable layout, compatible rotating beam transport system, the spatial design of fixed pencil beam transport system.

[0022] 3. The utility model makes full use of beam transport space, designs a long enough beam transport line, can give first treatment room beam, simultaneously can through adjusting and reforming the equipment components on beam transport line, can change beam performance parameter, benefit other scientific research projects. DETAILED DESCRIPTION

[0023] Figure 1 It is the structure schematic drawing of the utility model;

[0024] Figure 2 It is Figure 1 A part enlarged view in the of;

[0025] Figure 3 It is Figure 1 B part enlarged view in the of;

[0026] Figure 4 It is Figure 1 C part enlarged view in the of;

[0027] Figure 5 It is the structure schematic drawing of fixed experiment beam transport system in the utility model;

[0028] Figure 6 It is Figure 1 D part enlarged view in the of;

[0029] Figure 7 It is the structure schematic drawing of fixed pencil beam transport system in the utility model;

[0030] Figure 8 It is the structure schematic drawing of rotating beam transport system in the utility model.

[0031] In the figure: 1 - accelerating chamber; 100 - superconducting isochronous cyclotron system; 101 - first steering magnet of the adjustment system; 102 - first quadrupole magnet of the adjustment system; 105 - second steering magnet of the adjustment system; 106 - first vacuum chamber set of the adjustment system; 107 - energy degrader; 108 - collimator; 109 - second quadrupole magnet of the adjustment system; 112 - third steering magnet of the adjustment system; 113 - second vacuum chamber set of the adjustment system; 2 - branch selection system; 200 - dipole magnet; 201 - first quadrupole magnet of the selection system; 203 - momentum selection slit; 204 - second quadrupole magnet of the selection system; 206 - dipole magnet of the selection system; 31 - treatment terminal section 1; 3101 - first vacuum chamber set of section 1; 3102 - first dipole magnet of section 1; 3103 - first steering magnet of section 1; 3104 - first quadrupole magnet of section 1; 3105 - second dipole magnet of section 1; 3106 - second quadrupole magnet of section 1; 3109 - second vacuum chamber set of section 1; 3110 - second steering magnet of section 1; 3111 - third quadrupole magnet of section 1; 3113 - third vacuum chamber set of section 1; 3114 - third steering magnet of section 1; 3115 - fourth quadrupole magnet of section 1; 3117 - fourth vacuum chamber set of section 1; 3118 - fourth steering magnet of section 1; 32 - treatment terminal section 2; 3201 - first quadrupole magnet of section 2; 3203 - first vacuum chamber set of section 2; 3204 - first steering magnet of section 2; 3205 - first dipole magnet of section 2; 3206 - second quadrupole magnet of section 2; 3209 - second dipole magnet of section 2; 3210 - third quadrupole magnet of section 2; 3211 - fourth quadrupole magnet of section 2; 3212 - second vacuum chamber set of section 2; 3213 - second steering magnet of section 2; 33 - treatment terminal section 3; 3301 - first quadrupole magnet of section 3; 3303 - dipole magnet of section 3; 3304 - second quadrupole magnet of section 3; 3307 - vacuum chamber set of section 3; 3308 - steering magnet of section 3; 4 - first treatment room; 400 - fixed experimental beam transport system; 401 - experimental beam quadrupole magnet; 403 - experimental beam X scanning magnet; 404 - experimental beam Y scanning magnet; 405 - experimental beam measurement system; 406 - experimental beam isocenter; 5 - second treatment room; 500 - fixed pencil beam transport system; 501 - pencil beam quadrupole magnet; 503 - pencil beam X scanning magnet; 504 - pencil beam Y scanning magnet; 505 - pencil beam measurement system; 506 - pencil beam isocenter; 6 - third treatment room; 600 - rotating beam transport system; 601 - first quadrupole magnet of the rotating beam; 603 - first dipole magnet of the rotating beam; 604 - second quadrupole magnet of the rotating beam; 605 - third quadrupole magnet of the rotating beam; 606 - first vacuum chamber set of the rotating beam; 607 - steering magnet of the rotating beam; 608 - fourth quadrupole magnet of the rotating beam; 610 - second dipole magnet of the rotating beam;611 - Rotating beam second vacuum chamber assembly; 612 - Rotating beam fifth quadrupole magnet; 613 - Rotating beam third dipole magnet; 614 - Rotating beam X-scanning magnet; 615 - Rotating beam Y-scanning magnet; 616 - Rotating beam measurement system; 617 - Rotating beam isocenter point. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] like Figures 1-8 As shown, a compact multi-purpose proton beam system includes an acceleration chamber 1, a first treatment chamber 4, a second treatment chamber 5, and a third treatment chamber 6; the acceleration chamber 1 is equipped with a superconducting isochronous cyclotron accelerator system 100, the first treatment chamber 4 is equipped with a fixed experimental beam transport system 400, the second treatment chamber 5 is equipped with a fixed pencil beam transport system 500, and the third treatment chamber 6 is equipped with a rotating beam transport system 600;

[0035] The superconducting isochronous cyclotron accelerator system 100 is connected to the bidirectional selection system through the beam conditioning system. The bidirectional selection system includes a bidirectional dipole magnet 200 and two branch selection systems 2, which are connected in parallel at the rear end of the bidirectional dipole magnet 200.

[0036] It also includes a beam transport system, which consists of a first treatment terminal 31, a second treatment terminal 32, and a third treatment terminal 33; and a branch selection system 2 ( Figure 1 The branch selection system 2 on the left side is connected to the fixed experimental beam transport system 400 via a treatment terminal 31. The other branch selection system 2 ( Figure 1 The branch selection system 2 on the right side is connected to the fixed pencil beam transport system 500 through the second treatment terminal 32. The third treatment terminal 33 is a branch of the second treatment terminal 32 and is connected to the rotating beam transport system 600.

[0037] The beam conditioning system is arranged sequentially along the proton beam direction as follows: a first bidirectional correction magnet 101, three first quadrupole magnets 102, a second bidirectional correction magnet 105, a first vacuum chamber group 106, a de-energizer 107, a collimator 108, three second quadrupole magnets 109, a third bidirectional correction magnet 112, and a second vacuum chamber group 113.

[0038] The superconducting isochronous cyclotron accelerator system 100 can output a proton beam with a maximum energy of 240 MeV.

[0039] The beam adjusting system is used for receiving the proton beam with the maximum energy of 240 MeV output from the superconducting isochronous cyclotron system 100, and the ideal state of the proton beam is obtained before entering the energy reducer 107 by setting the magnet in the front end of the energy reducer 107. Then, the proton beam with the ideal target energy between 70-220 MeV can be obtained by adjusting the energy reducer 107, the collimator 108 and the magnet after the collimator 108, and finally the proton beam is transmitted to the two-way selection system.

[0040] The first vacuum chamber group 106 of the adjusting system is composed of a multi-wire ionization chamber, a Faraday cup and a vacuum box. The multi-wire ionization chamber is used for monitoring the beam state in real time on line during the operation of the entire proton beam system; the Faraday cup is used for blocking the proton beam when the entire proton beam system needs to be stopped; and the vacuum box is used for vacuum pumping to maintain the high vacuum environment for beam transmission.

[0041] The energy reducer 107 adopts a symmetric wedge structure, and the energy of the proton beam with the maximum energy of 240 MeV can be reduced to 70-220 MeV according to the requirement of the treatment terminal by adjusting the thickness of graphite.

[0042] The collimator 108 can adjust the emittance of the proton beam with any energy between 70-220 MeV output by the energy reducer 107.

[0043] The second vacuum chamber group 113 of the adjusting system is composed of a current modulation slit, a Faraday cup, a fluorescent target and a vacuum box. The current modulation slit can finely adjust the current of the proton beam with any energy between 70-220 MeV output by the collimator 108 in cooperation with the magnetic field adjustment of the magnet in the front end of the current modulation slit; the Faraday cup is used for monitoring the beam current information after energy reduction; the fluorescent target is used for monitoring the beam state; and the vacuum box is used for vacuum pumping to maintain the high vacuum environment for beam transmission.

[0044] The branch selection system 2 is sequentially provided with two selection system first quadrupole magnets 201, a momentum selection slit 203, two selection system second quadrupole magnets 204 and a selection system dipole magnet 206 along the direction of the proton beam. The branch selection system 2 can accurately adjust the momentum dispersion of the proton beam.

[0045] The bidirectional selection system is used to receive the proton beam with the target energy adjustable between 70-220 MeV from the beam adjustment system. When the left beam terminal needs to use the beam, the beam is selected to the left branch selection system 2 through the action of the bidirectional dipole magnet 200, and then the momentum dispersion of the proton beam is accurately adjusted after the focusing, limiting and deflection of the quadrupole magnet, momentum selection slit and dipole magnet in the branch selection system 2. After the proton beam meeting the demand of the left beam terminal is obtained, the beam finally enters the first treatment terminal 31. When the right beam terminal needs to use the beam, the beam is selected to the right branch selection system 2, and then the momentum dispersion of the proton beam is accurately adjusted after the focusing, limiting and deflection of the quadrupole magnet, momentum selection slit and dipole magnet in the branch selection system 2. After the proton beam meeting the demand of the right beam terminal is obtained, the beam finally enters the second treatment terminal 32.

[0046] The beam transport system is composed of the first treatment terminal 31, the second treatment terminal 32 and the third treatment terminal 33, and is used to transport the proton beam with any energy between 70-220 MeV after the modulation of the bidirectional selection system to each treatment terminal according to the treatment demand.

[0047] The first treatment terminal 31 is sequentially provided with a first vacuum chamber group 3101, a first dipole magnet 3102, a first bidirectional correction magnet 3103, a first quadrupole magnet 3104, a second dipole magnet 3105, three second quadrupole magnets 3106, a second vacuum chamber group 3109, a second bidirectional correction magnet 3110, two third quadrupole magnets 3111, a third vacuum chamber group 3113, a third bidirectional correction magnet 3114, two fourth quadrupole magnets 3115 and a fourth vacuum chamber group 3117.

[0048] The first vacuum chamber group 3101, the second vacuum chamber group 3109 and the third vacuum chamber group 3113 are used to extract vacuum to maintain the high-vacuum environment of the beam transmission, and the installation space of the fluorescent target and the Faraday cylinder used in debugging is reserved; the fourth vacuum chamber group is used to extract vacuum, and the fluorescent target and the Faraday cylinder are installed for monitoring the beam state and blocking the proton beam when stopping the beam, so as to block the beam in front of the first treatment chamber 4.

[0049] The fixed experimental beam transport system 400 is sequentially provided with two experimental beam quadrupole magnets 401, an experimental beam X scanning magnet 403, an experimental beam Y scanning magnet 404, an experimental beam measurement system 405 and an experimental beam isocenter 406 along the proton beam direction. The experimental beam X scanning magnet 403, the experimental beam Y scanning magnet 404 and the experimental beam measurement system 405 form a fixed experimental beam treatment head core component, can realize a positive point scanning irradiation field of not less than 30cm*40cm, and distribute the proton beam to the experimental beam isocenter 406.

[0050] The treatment terminal second section 32 is sequentially provided with two second section first quadrupole magnets 3201, a second section first vacuum chamber group 3203, a second section first bidirectional correction magnet 3204, a second section first dipole magnet 3205, three second section second quadrupole magnets 3206, a second section second dipole magnet 3209, a second section third quadrupole magnet 3210, a second section fourth quadrupole magnet 3211 and a second section second vacuum chamber group 3212 along the proton beam direction.

[0051] The second section first vacuum chamber group 3203 is used for vacuum pumping to maintain a high vacuum environment for beam transmission, and has installation spaces for a fluorescent target and a Faraday cup used during debugging; the second section second vacuum chamber group 3212 is used for vacuum pumping to maintain a high vacuum environment for beam transmission, and is installed with a fluorescent target and a Faraday cup for monitoring the beam state and blocking the proton beam when stopping the beam, so as to block the beam in front of the second treatment room 5.

[0052] The fixed pencil beam transport system 500 is sequentially provided with two pencil beam quadrupole magnets 501, a pencil beam X scanning magnet 503, a pencil beam Y scanning magnet 504, a pencil beam measurement system 505 and a pencil beam isocenter 506 along the proton beam direction. The pencil beam X scanning magnet 503, the pencil beam Y scanning magnet 504 and the pencil beam measurement system 505 form a fixed pencil beam treatment head core component, can realize a positive point scanning irradiation field of not less than 30cm*40cm, and distribute the proton beam to the pencil beam isocenter 506.

[0053] The treatment terminal third section 33 is connected behind the second section second dipole magnet 3209, and is sequentially provided with two third section first quadrupole magnets 3301, a third section dipole magnet 3303, three third section second quadrupole magnets 3304 and a third section vacuum chamber group 3307 along the proton beam direction. When the treatment terminal third section 33 needs to use the beam, the treatment terminal first section 31 and the treatment terminal second section 32 do not work, the proton beam from the right branch selection system 2 enters the treatment terminal third section 33 through the first half of the treatment terminal second section 32 and the second section second dipole magnet 3209, and finally reaches in front of the third treatment room 6.

[0054] The three-section vacuum chamber group 3307 is used for vacuum pumping to maintain a high-vacuum environment for beam transmission, and is provided with a fluorescent target and a Faraday cup, which are used for monitoring the beam state and blocking the proton beam when stopping the beam, so as to block the beam in front of the third treatment room 6.

[0055] The rotating beam transport system 600 is sequentially provided with two rotating beam first quadrupole magnets 601, a rotating beam first dipole magnet 603, and two parallel rotating beam branches in the direction of the proton beam. The rotating beam branches are sequentially provided with a rotating beam second quadrupole magnet 604, a rotating beam third quadrupole magnet 605, a rotating beam first vacuum chamber group 606, a rotating beam bidirectional correction magnet 607, two rotating beam fourth quadrupole magnets 608, a rotating beam second dipole magnet 610, a rotating beam second vacuum chamber group 611, a rotating beam fifth quadrupole magnet 612, a rotating beam third dipole magnet 613, a rotating beam X scanning magnet 614, a rotating beam Y scanning magnet 615, and a rotating beam measurement system 616. The rotating beam measurement systems 616 of the two rotating beam branches are provided with a rotating beam isocenter 617 therebetween.

[0056] The two rotating beam first quadrupole magnets 601 constitute an entrance section of the rotating beam transport system 600, which is used for optimizing the beam at the entrance and increasing the spot adjustment capability of the rotating beam transport system 600. The rotating beam first dipole magnet 603, the rotating beam second quadrupole magnet 604, the rotating beam third quadrupole magnet 605, the rotating beam first vacuum chamber group 606, the rotating beam bidirectional correction magnet 607, the rotating beam fourth quadrupole magnet 608, and the rotating beam second dipole magnet 610 constitute a climbing section of the rotating beam transport system 600, and the climbing height is determined by the scanning irradiation field. The rotating beam first vacuum chamber group 606 and the rotating beam second vacuum chamber group 611 are used for vacuum pumping and are each provided with a fluorescent target for monitoring the beam state. The rotating beam fifth quadrupole magnet 612 is located in a straight transmission section after the climbing section, which is used for optimizing the beam after climbing and increasing the spot adjustment capability of the rotating beam transport system 600. The rotating beam third dipole magnet 613 is a 90-degree deflection dipole magnet, which is used for deflecting the proton beam after climbing to the X scanning magnet 614. The rotating beam transport system 600 can be rotated by 185 degrees in the positive and negative directions around the rotating beam isocenter 617; the rotating beam X scanning magnet 614, the rotating beam Y scanning magnet 615, and the rotating beam measurement system 616 constitute core components of the rotating beam treatment head, which can realize a driven point scanning irradiation field of no less than 25 cm x 25 cm, and distribute the beam to the rotating beam isocenter 617.

[0057] The first treatment room 4, the second treatment room 5 and the third treatment room 6 respectively adopt the fixed experimental beam transport system 400, the fixed pencil beam transport system 500 and the rotating beam transport system 600, realize the multi-type active point scanning beam irradiation function, and meet the compact functional room layout. In addition, the second treatment room 5 and the third treatment room 6 reserve the standard proton therapy beam distribution system, which can meet the clinical needs of proton therapy; and the first treatment room 4 is reserved in front of a long beam transport space, that is, a treatment terminal section 31. By adjusting the magnet setting of the treatment terminal section 31, different performance proton beams can be distributed to the first treatment room 4, so as to meet the diversity needs of clinical and scientific research.

[0058] In the embodiment, the proton center one-layer equipment layout of the compact multi-purpose proton beam system is less than 1200 square meters, three treatment rooms can be provided, and the rotating beam and fixed beam proton therapy can be met, and a beam transport corridor is provided to meet the needs of scientific research and clinical trial projects.

[0059] In the embodiment, the specifications of the first bidirectional correction magnet 101 of the adjustment system, the second bidirectional correction magnet 105 of the adjustment system, the third bidirectional correction magnet 112 of the adjustment system, the first bidirectional correction magnet 3103 of the first section, the second bidirectional correction magnet 3110 of the first section, the third bidirectional correction magnet 3114 of the first section, the fourth bidirectional correction magnet 3118 of the first section, the first bidirectional correction magnet 3204 of the second section, the second bidirectional correction magnet 3213 of the second section, the third bidirectional correction magnet 3308 of the third section and the rotating beam bidirectional correction magnet 607 are C120, and the specific parameters are shown in Table 1.

[0060]

[0061] In the embodiment, the specifications of the first quadrupole magnet 102 of the adjustment system, the second quadrupole magnet 109 of the adjustment system, the first quadrupole magnet 201 of the selection system, the second quadrupole magnet 204 of the selection system, the first quadrupole magnet 3104 of the first section, the second quadrupole magnet 3106 of the first section, the first quadrupole magnet 3201 of the second section, the second quadrupole magnet 3206 of the second section, the third quadrupole magnet 3210 of the second section, the first and second quadrupole magnets 3301 and 3302 of the third section, the third quadrupole magnet 605 of the rotating beam, the fourth quadrupole magnet 608 of the rotating beam, the fifth quadrupole magnet 612 of the rotating beam are Q300; the third quadrupole magnet 3111 of the first section, the fourth quadrupole magnet 3115 of the first section, the fourth quadrupole magnet 3211 of the second section, the second quadrupole magnet 3304 of the third section, the experimental beam quadrupole magnet 401, the pencil beam quadrupole magnet 501, the first quadrupole magnet 601 of the rotating beam and the second quadrupole magnet 604 of the rotating beam are Q150. The specific parameters of the quadrupole magnets are shown in Table 2.

[0062]

[0063] In this embodiment, the bidirectional diode magnet 200 is of DB45 type; the system diode magnet 206, the second first diode magnet 3205, the second second diode magnet 3209 and the third diode magnet 3303 are all of B45-1 type; the first first diode magnet 3102 and the first second diode magnet 3105 are both of B45-2 type; the rotating beam first diode magnet 603 and the rotating beam second diode magnet 610 are both of B60 type; and the rotating beam third diode magnet 613 is of B90 type. The specific parameters of the diode magnets are shown in Table 3.

[0064]

[0065] The utility model discloses a compact beam transport design, introduce two -way selection system, provide a beam transport corridor, can utilize the beam transport corridor space and provide fixed experimental beam transport system 400, and provide the fixed pen -shaped beam transport system 500 and rotating beam transport system 600 reserved standard under the limited site condition, be favorable to the arrangement multi -chamber multi -purpose proton therapy system under the site limitation of hospital.

Claims

1. A compact, multi-purpose proton beam system, characterized in that: It includes an acceleration chamber (1), a first treatment chamber (4), a second treatment chamber (5), and a third treatment chamber (6); the acceleration chamber (1) is equipped with a superconducting isochronous cyclotron accelerator system (100), the first treatment chamber (4) is equipped with a fixed experimental beam transport system (400), the second treatment chamber (5) is equipped with a fixed pencil beam transport system (500), and the third treatment chamber (6) is equipped with a rotating beam transport system (600); The superconducting isochronous cyclotron accelerator system (100) is connected to the bidirectional selection system via a beam conditioning system. The bidirectional selection system includes a bidirectional dipole magnet (200) and two branch selection systems (2), which are connected in parallel at the rear end of the bidirectional dipole magnet (200). It also includes a beam transport system, which consists of a treatment terminal section 1 (31), a treatment terminal section 2 (32), and a treatment terminal section 3 (33); a branch selection system (2) is connected to a fixed experimental beam transport system (400) through the treatment terminal section 1 (31), and another branch selection system (2) is connected to a fixed pencil beam transport system (500) through the treatment terminal section 2 (32). The treatment terminal section 3 (33) is a branch of the treatment terminal section 2 (32), and the treatment terminal section 3 (33) is connected to a rotating beam transport system (600).

2. The compact, multi-purpose proton beam system according to claim 1, characterized in that: The beam conditioning system is provided with the following components in sequence along the proton beam direction: a first bidirectional correction magnet (101), three first quadrupole magnets (102), a second bidirectional correction magnet (105), a first vacuum chamber group (106), a de-energizer (107), a collimator (108), three second quadrupole magnets (109), a third bidirectional correction magnet (112), and a second vacuum chamber group (113).

3. A compact, multi-purpose proton beam system according to claim 2, characterized in that: The branch selection system (2) is provided with two first quadrupole magnets (201), momentum selection slits (203), two second quadrupole magnets (204), and a selection system diode magnet (206) in sequence along the proton beam direction.

4. A compact, multi-purpose proton beam system according to claim 3, characterized in that: The treatment terminal section (31) is provided with the following components in sequence along the proton beam direction: a first vacuum chamber group (3101), a first dipole magnet (3102), a first bidirectional correction magnet (3103), a first quadrupole magnet (3104), a second dipole magnet (3105), three second quadrupole magnets (3106), a second vacuum chamber group (3109), a second bidirectional correction magnet (3110), two third quadrupole magnets (3111), a third vacuum chamber group (3113), a third bidirectional correction magnet (3114), two fourth quadrupole magnets (3115), a fourth vacuum chamber group (3117), and a fourth bidirectional correction magnet (3118).

5. A compact, multi-purpose proton beam system according to claim 4, characterized in that: The fixed experimental beam transport system (400) is provided with two experimental beam quadrupole magnets (401), an experimental beam X-scanning magnet (403), an experimental beam Y-scanning magnet (404), an experimental beam measurement system (405), and an experimental beam isocenter point (406) in sequence along the proton beam direction.

6. A compact, multi-purpose proton beam system according to claim 3, characterized in that: The treatment terminal (32) is provided with two first quadrupole magnets (3201), a first vacuum chamber group (3203), a first bidirectional correction magnet (3204), a first dipole magnet (3205), three second quadrupole magnets (3206), a second dipole magnet (3209), a third quadrupole magnet (3210), a fourth quadrupole magnet (3211), a second vacuum chamber group (3212), and a second bidirectional correction magnet (3213) in the second section along the proton beam direction.

7. A compact, multi-purpose proton beam system according to claim 6, characterized in that: The fixed pencil beam transport system (500) is provided with two pencil beam quadrupole magnets (501), a pencil beam X scanning magnet (503), a pencil beam Y scanning magnet (504), a pencil beam measurement system (505), and a pencil beam center point (506) in sequence along the proton beam direction.

8. A compact, multi-purpose proton beam system according to claim 6, characterized in that: The treatment terminal three-section (33) is connected to the rear end of the second-stage second-dipole magnet (3209). The treatment terminal three-section (33) is arranged in sequence along the proton beam direction with two three-section first-quadrupole magnets (3301), three-section dipole magnets (3303), three three-section second-quadrupole magnets (3304), a three-section vacuum chamber group (3307), and two three-section bidirectional correction magnets (3308).

9. A compact, multi-purpose proton beam system according to claim 8, characterized in that: The rotating beam transport system (600) is provided with two rotating beam first quadrupole magnets (601), a rotating beam first dipole magnet (603) and two rotating beam branches connected in parallel along the proton beam direction. The rotating beam branches are provided with rotating beam second quadrupole magnets (604), rotating beam third quadrupole magnets (605), rotating beam first vacuum chamber group (606), rotating beam bidirectional correction magnets (607), two rotating beam fourth quadrupole magnets (608), rotating beam second dipole magnets (610), rotating beam second vacuum chamber group (611), rotating beam fifth quadrupole magnets (612), rotating beam third dipole magnets (613), rotating beam X-scan magnets (614), rotating beam Y-scan magnets (615), and a rotating beam measurement system (616) in the middle. The rotating beam measurement system (616) of the two rotating beam branches is provided with a rotating beam isocenter point (617).

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