技术领域technical field
本发明涉及一种离子加速设备技术领域，尤其是涉及一种混合型离子加速装置。The invention relates to the technical field of ion acceleration equipment, in particular to a hybrid ion acceleration device.
背景技术Background technique
射频四极场(RFQ)加速器是1969年由苏联科学家提出，1984年由美国科学家加速大电流成功而闻名于世，得到普及。RFQ有四个、两组对称的电极。RFQ的每组电极具有相同的电势和电压，且两组的电势和电压正好相反。这就使得RFQ能在加速粒子(两组电极共同作用)的同时也能对粒子起到聚束的作用(单组电极)。但是RFQ加速结构的电力加速效率很低，且因为RFQ的腔体频率限制，使得RFQ在使用上有很大限制。The radio frequency quadrupole field (RFQ) accelerator was proposed by Soviet scientists in 1969, and was famous and popularized by American scientists in 1984 for accelerating large currents. RFQ has four, two sets of symmetrical electrodes. Each group of electrodes of RFQ has the same potential and voltage, and the potential and voltage of the two groups are just opposite. This allows the RFQ to accelerate the particles (two sets of electrodes work together) and at the same time to bunch the particles (single set of electrodes). However, the electric acceleration efficiency of the RFQ acceleration structure is very low, and because of the frequency limitation of the cavity of the RFQ, the RFQ has great limitations in use.
漂移管(DT)型加速器从1932年诞生起，就成为目前最主流的常温加速器结构。其加速原理是注入的带电粒子经过设计好的漂移管间隙时，漂移管间隙正好是正的电场，因此带电粒子能在场方向上被加速；经过半个高频周期，漂移管间隙的电场变为负电场时，粒子正好进入漂移管内部，因为电磁屏蔽效应，所以带电粒子不会感受到负电场而被减速；同样经过下半个高频周期进入下一个漂移管间隙时，漂移管间隙中电场又变为正电场，因此带电粒子在整个结构中呈加速趋势。交叉指H型加速结构具有很高的电力加速效率，但是在低光速领域(粒子速度较低时)因为空间电荷效应而使得束流容易扩散，束流光晕较大。Since its birth in 1932, the drift tube (DT) accelerator has become the most mainstream room temperature accelerator structure. The acceleration principle is that when the injected charged particles pass through the designed drift tube gap, the drift tube gap is just a positive electric field, so the charged particles can be accelerated in the field direction; after half a high-frequency cycle, the drift tube gap The electric field becomes negative When the electric field is applied, the particles just enter the inside of the drift tube. Because of the electromagnetic shielding effect, the charged particles will not feel the negative electric field and be decelerated; similarly, when entering the next gap of the drift tube after the second half of the high-frequency cycle, the electric field in the gap of the drift tube becomes a positive electric field, so charged particles tend to accelerate throughout the structure. The interdigitated H-type accelerating structure has high electrical acceleration efficiency, but in the low light speed field (when the particle speed is low), the beam is easy to diffuse due to the space charge effect, and the beam halo is large.
发明内容Contents of the invention
本发明的目的在于针对现有技术的缺陷而提供一种混合型离子加速装置，其通过把射频四极场和漂移管两种加速结构合并到一个交叉指H型的加速腔体内，同时具有射频四极场的高传输效率、漂移管结构的高梯度加速能力，以及交叉指H型加速器的高功率加速效率，从而解决了现有技术的问题。The object of the present invention is to provide a hybrid ion accelerator for the defects of the prior art, which incorporates two accelerating structures of radio frequency quadrupole field and drift tube into an interdigitated H-type accelerating cavity, and simultaneously has radio frequency The high transmission efficiency of the quadrupole field, the high gradient acceleration capability of the drift tube structure, and the high power acceleration efficiency of the interdigitated H-type accelerator solve the problems of the prior art.
为实现上述目的，本发明采取的技术方案为：所述的一种混合型离子加速装置，其特点是包括腔体，所述的腔体内同一中心线设置射频四极场段和漂移管段两部分，射频四极场段和漂移管段的对接处对应设置有地基板，所述的腔体内上下对称设置有两个T形板，腔体两 端设置有端板；所述的射频四极场段包括两组射频四极场杆型电极，射频四极场杆型电极通过射频四极场电极支架和射频四极场电极支架支撑杆安装在T形板上，射频四极场电极支架与射频四极场杆型电极之间设置有电极支撑接触部件；所述的漂移管段为多个漂移管电极式结构，每个漂移管电极分别通过漂移管支撑杆安装在T形板上，相邻漂移管电极之间的间隙为交互相位聚束结构方式，漂移管支撑杆为交叉指H型设计。In order to achieve the above object, the technical solution adopted by the present invention is: the hybrid ion accelerator described above is characterized in that it includes a cavity, and two parts of a radio frequency quadrupole field section and a drift tube section are arranged on the same central line in the cavity , the joint of the radio frequency quadrupole field section and the drift pipe section is correspondingly provided with a ground plate, two T-shaped plates are arranged symmetrically up and down in the cavity, and end plates are provided at both ends of the cavity; the radio frequency quadrupole field section Including two sets of radio frequency quadrupole field rod electrodes, the radio frequency quadrupole field rod electrodes are installed on the T-shaped plate through the radio frequency quadrupole field electrode holder and the radio frequency quadrupole field electrode holder support rod, the radio frequency quadrupole field electrode holder is connected with the radio frequency quadrupole field electrode holder Electrode support contact parts are arranged between pole field rod electrodes; the drift tube section is a plurality of drift tube electrode structures, and each drift tube electrode is installed on a T-shaped plate through a drift tube support rod, and adjacent drift tubes The gap between the electrodes is an alternating phase bunching structure, and the support rod of the drift tube is an interdigitated H-shaped design.
所述的地基板、射频四极场杆型电极和漂移管电极为同中心线设置，地基板与射频四极场杆型电极和漂移管电极相邻处均设置有间隙，地基板通过地基板支撑杆安装在腔体外壁上，地基板支撑杆与射频四极场电极支架支撑杆和漂移管支撑杆为垂直设置。The ground plate, the radio frequency quadrupole field rod electrode and the drift tube electrode are set on the same center line, and there are gaps between the ground plate and the radio frequency quadrupole field rod electrode and the drift tube electrode, and the ground plate passes through the ground plate The support rod is installed on the outer wall of the cavity, and the support rod of the ground plate is vertically arranged with the support rod of the radio frequency quadrupole field electrode bracket and the support rod of the drift tube.
所述的射频四极场段中相邻的两个射频四极场杆型电极支架分别通过电极支撑接触部件固定连接水平方向杆型电极和垂直方向杆型电极。Two adjacent radio frequency quadrupole field rod electrode supports in the radio frequency quadrupole field section are respectively fixedly connected to the horizontal direction rod electrode and the vertical direction rod electrode through the electrode supporting contact parts.
所述的射频四极场电极支架支撑杆和漂移管支撑杆的个数根据腔体程度和功率计算确定，相邻的射频四极场电极支架支撑杆和漂移管支撑杆呈交叉指H型结构。The number of the RF quadrupole field electrode support rods and drift tube support rods is determined according to the cavity level and power calculation, and the adjacent RF quadrupole field electrode support rods and drift tube support rods have an interdigitated H-shaped structure .
所述的射频四极场杆型电极在腔体做连续波运行或者做高占空比运行时，或者由发热计算运行时因馈入功率而引起的热变形能引起腔体频率失谐时，射频四极场杆型电极内部设置冷却回路，冷却回路为直线型结构，射频四极场杆型电极的冷却回路通过电极支撑接触部件及T型板和整个冷却系统连为一体。When the radio frequency quadrupole field rod electrode is operated in continuous wave operation or high duty ratio operation in the cavity, or when the thermal deformation caused by the fed-in power can cause the frequency detuning of the cavity due to heat calculation operation, A cooling circuit is set inside the RF quadrupole field rod electrode, and the cooling circuit is a linear structure. The cooling circuit of the RF quadrupole field rod electrode is connected with the entire cooling system through the electrode support contact parts and the T-plate.
所述的地基板为圆形电极，当腔体做连续波运行或者做高占空比运行时，或者由发热计算运行时因馈入功率而引起的热变形能引起腔体频率失谐时，地基板内部设计冷却回路，冷却回路为掏空水路再焊接密封设计，冷却回路通过地基板支撑杆和整个冷却系统连为一体。The ground plate is a circular electrode. When the cavity is operated in continuous wave or high duty cycle, or when the thermal deformation caused by the fed-in power can cause the frequency detuning of the cavity due to the calculation of heat generation, A cooling circuit is designed inside the foundation plate, which is designed for hollowing out the waterway and then welding and sealing. The cooling circuit is connected with the entire cooling system through the support rod of the foundation plate.
所述的漂移管电极为圆形电极，当腔体做连续波运行或者做高占空比运行时，或者由发热计算运行时因馈入功率而引起的热变形能引起腔体频率失谐时，漂移管内部设计冷却回路，冷却回路为掏空水路再焊接密封设计，冷却回路通过漂移管电极支撑杆以及T型板和整个冷却系统连为一体。The drift tube electrode is a circular electrode, when the cavity operates in continuous wave or high duty cycle, or when the thermal deformation caused by the fed-in power can cause the frequency detuning of the cavity due to heat calculation and operation , The cooling circuit is designed inside the drift tube. The cooling circuit is designed for hollowing out the waterway and then welding and sealing. The cooling circuit is connected with the entire cooling system through the drift tube electrode support rod and T-plate.
漂移管段的束流聚焦方式为交互相位聚束方式。若根据计算，交互相位聚焦方式不能满足束流聚束时，可以通过在漂移管内部设置永久磁铁的方式来对束流进行聚束。The beam focusing mode of the drifting pipe section is an alternating phase beamforming mode. If according to the calculation, the alternating phase focusing method cannot satisfy the beam focusing, the beam can be focused by setting a permanent magnet inside the drift tube.
所述的射频四极场电极支架支撑杆、漂移管支撑杆和地基板支撑杆中设置有冷却回路，冷却回路为掏空支撑杆中心部设计，冷却回路通过腔体外壁和整个系统的冷却回路连为一体。The RF quadrupole field electrode bracket support rod, the drift tube support rod and the ground plate support rod are provided with a cooling circuit, the cooling circuit is designed to hollow out the center of the support rod, and the cooling circuit passes through the outer wall of the cavity and the cooling circuit of the entire system connected as one.
所述的腔体为真空腔筒，其真空度为10-4-10-7Pa。The chamber is a vacuum chamber with a vacuum degree of 10-4 -10-7 Pa.
一种采用所述的混合型离子加速装置用于重粒子癌症治疗，其特点是在所述的腔体采用激光离子源，混合型离子加速装置与现有的轨道偏转磁铁、同步环上的加速腔体和同步环上 的偏转磁铁共同构成同步环型加速器一起作为重粒子癌症治疗设施，具有设施更简单，束流强度更强，造价更低的优点。A kind of using the hybrid ion accelerator for heavy particle cancer treatment, which is characterized in that the laser ion source is used in the cavity, and the hybrid ion accelerator is combined with the existing orbital deflection magnet and the acceleration on the synchronization ring. The cavity and the deflection magnets on the synchronous ring together constitute a synchrotron ring accelerator and serve as a heavy particle cancer treatment facility, which has the advantages of simpler facilities, stronger beam intensity, and lower cost.
本发明的有益效果：所述的一种混合型离子加速装置，极大的发挥了RFQ的漂移管对束流的加速和聚束效应，并且因为采用混合型结构而使得整个腔体消耗很少的功率就能把束流加速到更高的能量。本发明节省了大量空间和成本，而且更紧经济、更实用。其具有高传输效率、高梯度加速能力，高电力加速效率。主要是用于强流低能离子束流的加速和强流加速器的注入器等应用型加速装置。其在更短的距离内加速更强的束流、把束流加速到更高的能量且使之具有更好的光晕效应。当所述的腔体作为重粒子癌症治疗设施的注入器使用时，能省去现有的、能引起束流极大损耗以及引起光晕极大扩散的剥离膜系统，也能省去现有且复杂的多圈注入系统，因此能极大的缩小同步环的束流孔径和同步环上所有的电磁铁的尺寸，进而能极大的降低整个重粒子癌症治疗设施的工程造价和工期，造福人类社会。Beneficial effects of the present invention: the hybrid ion accelerator device greatly exerts the acceleration and bunching effect of the drift tube of the RFQ on the beam, and the consumption of the entire cavity is very small because of the hybrid structure The power can accelerate the beam to a higher energy. The invention saves a lot of space and cost, and is more compact, economical and practical. It has high transmission efficiency, high gradient acceleration capability, and high power acceleration efficiency. It is mainly used for the acceleration of high-current low-energy ion beams and the injector of high-current accelerators and other application-type acceleration devices. It accelerates a stronger beam over a shorter distance, accelerates the beam to higher energies and gives it a better halo effect. When the cavity is used as an injector of a heavy particle cancer treatment facility, the existing stripping film system that can cause a great loss of the beam current and a great diffusion of the halo can be saved, and the existing And the complex multi-turn injection system can greatly reduce the beam aperture of the synchronous ring and the size of all the electromagnets on the synchronous ring, which can greatly reduce the engineering cost and construction period of the entire heavy particle cancer treatment facility, benefiting Human society.
附图说明：Description of drawings:
图1本发明的结构原理示意图；Fig. 1 schematic diagram of structural principle of the present invention;
图2本发明图1中A处结构放大示意图；Figure 2 shows the enlarged schematic diagram of the structure at A in Figure 1 of the present invention;
图3本发明用于重粒子癌症治疗原理示意图；Fig. 3 is a schematic diagram of the principle of heavy particle cancer treatment of the present invention;
图4本发明用于治疗人头部肿瘤示意图。Fig. 4 is a schematic diagram of the present invention being used to treat human head tumors.
图中所示：1.腔体，2.射频四极场段，3.漂移管段，4.地基板，5.T形板，6.端板，7.射频四极场杆型电极,7-1：水平方向杆型电极，7-2：垂直方向杆型电极，8.射频四极场电极支架，9.射频四极场电极支架支撑杆，10.电极支撑接触部件，11.漂移管型电极，12.漂移管支撑杆，13.间隙，14.地基板支撑杆，15.激光离子源，16.同步环型加速器，17.轨道偏转磁铁，18.同步环上的加速腔体，19.同步环上的偏转磁铁，20.混合型加速器，21.质子，22.中子靶，23.电磁泵，24.热交换器，25.中子生成部，26.控制系统，27.中子，28.治疗辐射系统，29.肿瘤，30.人体，31.剂量测量装置。As shown in the figure: 1. Cavity, 2. RF quadrupole field section, 3. Drift tube section, 4. Ground plate, 5. T-shaped plate, 6. End plate, 7. RF quadrupole field rod electrode, 7 -1: Horizontal rod electrode, 7-2: Vertical rod electrode, 8. RF quadrupole field electrode holder, 9. RF quadrupole field electrode holder support rod, 10. Electrode support contact parts, 11. Drift tube Type electrode, 12. Drift tube support rod, 13. Gap, 14. Ground plate support rod, 15. Laser ion source, 16. Synchrotron ring accelerator, 17. Orbit deflection magnet, 18. Acceleration cavity on the synchro ring, 19. Deflection magnet on synchronous ring, 20. Hybrid accelerator, 21. Proton, 22. Neutron target, 23. Electromagnetic pump, 24. Heat exchanger, 25. Neutron generation department, 26. Control system, 27. Neutrons, 28. Therapeutic Radiation Systems, 29. Tumors, 30. Human Body, 31. Dosimetry Devices.
具体实施方式Detailed ways
下面结合附图来详细说明本发明。The present invention will be described in detail below in conjunction with the accompanying drawings.
如图1和2所示，所述的一种混合型离子加速装置，包括腔体1，所述的腔体内同一中心线设置射频四极场段2和漂移管段3两部分，射频四极场段2和漂移管段3的对接处对应设置有地基板4，所述的腔体1内上下对称设置有两个T形板5，腔体1两端设置有端板6； 所述的射频四极场段2包括两组射频四极场杆型电极7，射频四极场杆型电极7通过射频四极场电极支架8和射频四极场电极支架支撑杆9安装在T形板5上，射频四极场电极支架8与射频四极场杆型电极7之间设置有电极支撑接触部件10；所述的漂移管段3为多个漂移管电极11式结构，每个漂移管电极11分别通过漂移管支撑杆12安装在T形板5上，相邻漂移管电极11之间的间隙13为交互相位聚束结构方式。As shown in Figures 1 and 2, the described hybrid ion acceleration device includes a cavity 1, two parts of a radio frequency quadrupole field section 2 and a drift tube section 3 are arranged on the same center line in the cavity, and the radio frequency quadrupole field section The joint of section 2 and drift pipe section 3 is correspondingly provided with a ground plate 4, and two T-shaped plates 5 are arranged symmetrically up and down in the cavity 1, and end plates 6 are provided at both ends of the cavity 1; The polar field section 2 includes two groups of radio frequency quadrupole field rod electrodes 7, and the radio frequency quadrupole field rod electrodes 7 are installed on the T-shaped plate 5 through the radio frequency quadrupole field electrode bracket 8 and the radio frequency quadrupole field electrode bracket support rod 9, An electrode support contact part 10 is arranged between the radio frequency quadrupole field electrode bracket 8 and the radio frequency quadrupole field rod electrode 7; the drift tube section 3 is a structure of a plurality of drift tube electrodes 11, and each drift tube electrode 11 passes through the The drift tube support rod 12 is installed on the T-shaped plate 5, and the gap 13 between the adjacent drift tube electrodes 11 is an alternating phase bunching structure.
所述的地基板4、射频四极场杆型电极7和漂移管电极11为同中心线设置，地基板4与射频四极场杆型电极7和漂移管电极11相邻处均设置有间隙，地基板4通过地基板支撑杆14安装在腔体1外壁上，地基板支撑杆14与射频四极场电极支架支撑杆9和漂过移管支撑杆12为垂直设置。The ground plate 4, the radio frequency quadrupole field rod electrode 7 and the drift tube electrode 11 are set on the same center line, and the ground plate 4 is provided with a gap adjacent to the radio frequency quadrupole field rod electrode 7 and the drift tube electrode 11 , the ground plate 4 is installed on the outer wall of the cavity 1 through the ground plate support rod 14, and the ground plate support rod 14 is vertically arranged with the radio frequency quadrupole field electrode bracket support rod 9 and the drift tube support rod 12.
所述的射频四极场段2中相邻的两个射频四极场杆型电极支架8分别通电极支撑接触部件10固定连接水平方向杆型电极7-1和垂直方向杆型电极7-2。The two adjacent radio frequency quadrupole field rod-type electrode holders 8 in the radio frequency quadrupole field segment 2 are fixedly connected to the horizontal direction rod-type electrode 7-1 and the vertical direction rod-type electrode 7-2 through the electrode support contact part 10 respectively .
所述的射频四极场电极支架支撑杆9和漂移管支撑杆12的个数根据腔体程度和功率计算确定，相邻的射频四极场电极支架支撑杆9和漂移管支撑杆12呈交叉指H型结构。The numbers of the RF quadrupole field electrode support rods 9 and the drift tube support rods 12 are determined according to the cavity level and power calculation, and the adjacent RF quadrupole field electrode support rods 9 and the drift tube support rods 12 are crossed Refers to the H-type structure.
所述的射频四极场杆型电极7在腔体做连续波运行或者做高占空比运行时，或者由发热计算运行时因馈入功率而引起的热变形能引起腔体频率失谐时，射频四极场杆型电极7内部设置冷却回路，冷却回路为直线型结构，射频四极场杆型电极7的冷却回路通过电极支撑接触部件及T型板和整个冷却系统连为一体。When the radio frequency quadrupole field rod electrode 7 is operated in continuous wave operation or high duty cycle operation in the cavity, or when the thermal deformation caused by the fed-in power can cause the frequency detuning of the cavity due to heat generation calculation operation , The RF quadrupole field rod electrode 7 is provided with a cooling circuit inside, the cooling circuit is a linear structure, the cooling circuit of the RF quadrupole field rod electrode 7 is connected with the entire cooling system through the electrode support contact parts and the T-plate.
所述的地基板4为圆形电极，当腔体1做连续波运行或者做高占空比运行时，或者由发热计算运行时因馈入功率而引起的热变形能引起腔体频率失谐时，地基板内部设计冷却回路，冷却回路为掏空水路再焊接密封设计，冷却回路通过地基板支撑杆和整个冷却系统连为一体。The ground plate 4 is a circular electrode. When the cavity 1 is operated in continuous wave or high duty cycle, or the thermal deformation caused by the fed-in power during operation due to heat generation calculation can cause the frequency detuning of the cavity At the same time, the cooling circuit is designed inside the foundation plate. The cooling circuit is designed for hollowing out the waterway and then welding and sealing. The cooling circuit is connected with the entire cooling system through the support rod of the foundation plate.
所述的漂移管电极11为圆形电极，当腔体1做连续波运行或者做高占空比运行时，或者由发热计算运行时因馈入功率而引起的热变形能引起腔体频率失谐时，漂移管内部设计冷却回路，冷却回路为掏空水路再焊接密封设计，冷却回路通过漂移管电极支撑杆以及T型板和整个冷却系统连为一体。The drift tube electrode 11 is a circular electrode. When the cavity 1 is operated in continuous wave or high duty cycle, or the thermal deformation caused by the feed-in power during operation due to heat generation calculation can cause the frequency of the cavity to lose When in harmony, a cooling circuit is designed inside the drift tube. The cooling circuit is designed for hollowing out the waterway and then welding and sealing. The cooling circuit is connected with the entire cooling system through the drift tube electrode support rod and T-plate.
漂移管段3的束流聚焦方式为交互相位聚束方式。若根据计算，交互相位聚焦方式不能满足束流聚束时，可以通过在漂移管内部设置永久磁铁的方式来对束流进行聚束。The beam focusing mode of the drift pipe section 3 is an alternating phase beamforming mode. If according to the calculation, the alternating phase focusing method cannot satisfy the beam focusing, the beam can be focused by setting a permanent magnet inside the drift tube.
所述的射频四极场电极支架支撑杆9、漂移管支撑杆12和地基板支撑杆14中设置有冷却回路，冷却回路为掏空支撑杆中心部设计，冷却回路通过腔体外壁和整个系统的冷却回路连为一体。The RF quadrupole field electrode bracket support rod 9, the drift tube support rod 12 and the ground plate support rod 14 are provided with a cooling circuit, the cooling circuit is designed to hollow out the center of the support rod, and the cooling circuit passes through the outer wall of the cavity and the entire system The cooling circuit is integrated into one.
所述的腔体1为真空腔筒，其真空度为10-4-10-7Pa。The chamber 1 is a vacuum chamber with a vacuum degree of 10-4 -10-7 Pa.
如图3所示，一种采用所述的混合型离子加速装置用于重粒子癌症治疗，其特点是在所述的腔体采用激光离子源15，混合型离子加速装置与现有的轨道偏转磁铁17、同步环上的加速腔体18和同步环上的偏转磁铁19共同构成同步环型加速器16一起作为重粒子癌症治疗设施，具有设施更简单，束流强度更强，造价更低的优点。现有的同步环型重离子癌症治疗设施都是加速C4+粒子，然后经过碳素剥离膜剥离后，多圈注入同步环，然后再由同步环加速C6+粒子到300～400MeV(Mega-Electron Voltage)后再辐射人体患部进行癌症治疗。但是一般的ECR(Electron Cyclotron Resonance)离子源只能产生数十到数百微安的C4+粒子，而且在经过碳素剥离膜时要想得到95％以上的C6+转换率，必须加速C4+粒子到6-8MeV，这就使得注入器本身非常巨大、复杂。又因为使用ECR离子源的注入器得到的粒子数远远小于癌症治疗所需的粒子数，因此都必须使用复杂的多圈注入法来得到必须的粒子数。而使用激光离子源和混合型加速器的新的注入器，因为一次激光等离子体注入的C6+粒子数远远大于癌症治疗所需的粒子数，所以对束流质量损害很大的碳素剥离膜和复杂的多圈注入系统都可以省去。同时，因为省去了多圈注入系统，所以同步环上的磁铁的束流孔径都可以做的很小，从而大幅减小同步环上的磁铁尺寸，大幅降低同步环的造价。混合腔型加速器的使用能极大的简化注入器和同步环本身，是重离子癌症治疗的重大突破，是加速器民用化最为期待的产品。As shown in Fig. 3, a kind of described hybrid ion accelerator is used for heavy particle cancer treatment, it is characterized in that adopting laser ion source 15 in described cavity, hybrid ion accelerator and existing track deflection The magnet 17, the acceleration cavity 18 on the synchronous ring and the deflection magnet 19 on the synchronous ring together constitute the synchronous ring accelerator 16 and together serve as a heavy particle cancer treatment facility, which has the advantages of simpler facilities, stronger beam intensity and lower cost . Existing synchronous ring-type heavy ion cancer treatment facilities accelerate C4+ particles, and then after peeling off the carbon stripping film, they are injected into the synchronous ring for multiple turns, and then the synchronous ring accelerates C6+ particles to 300-400MeV (Mega-Electron Voltage) Then irradiate the affected part of the human body for cancer treatment. However, the general ECR (Electron Cyclotron Resonance) ion source can only generate tens to hundreds of microamperes of C4+ particles, and in order to obtain a C6+ conversion rate of more than 95% when passing through the carbon stripping film, it is necessary to accelerate the C4+ particles to 6- 8 MeV, which makes the injector itself very large and complex. And because the number of particles obtained by the injector using the ECR ion source is far less than the number of particles required for cancer treatment, it is necessary to use a complex multi-circle implantation method to obtain the necessary number of particles. However, the new injector using laser ion source and hybrid accelerator, because the number of C6+ particles injected by a laser plasma is far greater than the number of particles required for cancer treatment, so the carbon peeling film and the Complicated multi-turn injection systems can be dispensed with. At the same time, because the multi-turn injection system is omitted, the beam apertures of the magnets on the synchronous ring can be made very small, thereby greatly reducing the size of the magnets on the synchronous ring and greatly reducing the cost of the synchronous ring. The use of the hybrid cavity accelerator can greatly simplify the injector and the synchronization ring itself, which is a major breakthrough in the treatment of heavy ion cancer and the most anticipated product for the civilian use of the accelerator.
如图4所示，使用混合型加速器的BNCT(Boron Neutron Cancer Therapy)示意图，图中显示的是治疗人头部肿瘤示意图。As shown in Figure 4, a schematic diagram of BNCT (Boron Neutron Cancer Therapy) using a hybrid accelerator, which shows a schematic diagram of treating human head tumors.
使用混合型加速器加速必要数量的质子到必要的能量，质子束在通过锂靶时发生核反应，放射出中子，和使用反应堆的BNCT不同，通过加速器产生的中子可以不经过中子减速器就可以直接照射患者的肿瘤患部。因为癌细胞对Boron元素有嗜好性，可以通过提前给患者喂服Boron化合物而使癌细胞吸附Boron元素，又因为Boron元素的中子反应面积较大，因此质子打靶产生的中子在照射人体时多数只和癌细胞中的Boron元素反应，进而达到只杀死癌细胞的功效。A hybrid accelerator is used to accelerate the necessary number of protons to the necessary energy. When the proton beam passes through the lithium target, a nuclear reaction occurs and neutrons are emitted. Unlike the BNCT using a reactor, the neutrons generated by the accelerator can be recovered without passing through the neutron decelerator. It can directly irradiate the tumor affected part of the patient. Because cancer cells have a preference for Boron elements, the cancer cells can absorb Boron elements by feeding Boron compounds to patients in advance, and because the neutron reaction area of Boron elements is relatively large, neutrons generated by proton targeting can irradiate the human body. Most of them only react with the Boron element in cancer cells, and then achieve the effect of only killing cancer cells.
使用混合型加速器的BNCT治疗法是粒子尺度的选择，精确度极高，癌症复发率极小。而使用混合型加速器可以达到节省投资、节省空间的目的，非常容易普及，是不可多得的值得期待的、优秀的加速器民用化产品。BNCT therapy using hybrid accelerators is particle-scale selective, extremely precise, and has minimal cancer recurrence. The use of hybrid accelerators can achieve the purpose of saving investment and space, and is very easy to popularize. It is a rare and excellent accelerator civilian product that is worth looking forward to.
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.
| Application Number | Priority Date | Filing Date | Title |
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| CN201410772795.8ACN104470191B (en) | 2014-12-13 | 2014-12-13 | A kind of mixed type ion accelerator |
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| CN201410772795.8ACN104470191B (en) | 2014-12-13 | 2014-12-13 | A kind of mixed type ion accelerator |
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