Optimal design of periodic permanent magnetic focusing system for four-beam traveling wave tubes
-
摘要: 根据电子注参数、布里渊磁场公式及周期聚焦系统轴向磁通密度峰值经验公式，计算出永磁聚焦系统轴向峰值磁通密度，利用Ansoft Maxwell 3D软件建立了四注行波管周期永磁聚焦系统仿真模型，对模型结构尺寸进行了参数化分析，研究了周期永磁聚焦系统结构尺寸对聚焦系统通道内磁通密度的影响，确定了磁聚焦系统结构最佳尺寸配合，优化设计出了四注行波管周期永磁聚焦系统。其电子注通道中心轴线上轴向磁通密度峰值Bz=309 mT，横向磁通密度Bt=2.86 mT，Bt/Bz=0.92%。Abstract: According to the electron beam parameters and Brillouin magnetic field formula and the axial magnetic flux density peak empirical formula of the periodic focusing system, the axial peak magnetic flux density of the permanent magnet focusing system is calculated. The simulation model of the permanent magnet focusing system of the four-beam travelling wave tube is established by Ansoft Maxwell 3D software. The structural dimensions of the model are parametrically analyzed, the influence of the structural dimension of the periodic permanent magnet focusing system on the magnetic field in the tunnel is studied, the optimal size matching of the magnetic focusing system is determined, and the periodic permanent magnet focusing system of the four-beam traveling wave tube is optimally designed. The axial magnetic flux density peak Bz=309 mT, the transverse magnetic flux density Bt=2.86 mT, Bt/Bz=0.92% on the central axis of the electron beam tunnel.
-
图 1 四注行波管磁聚焦系统仿真模型
Figure 1. Simulation model of magnetic focusing system for four-beam TWT
图 2 四注行波管PPM聚焦系统结构示意图
Figure 2. Schematic diagram of PPM focusing system for four-beam TWT
图 3 电子注通道内磁通密度与K的关系
Figure 3. Relationship between magnetic flux density and K in electron beam tunnel
图 4 电子注通道内磁通密度与F的关系
Figure 4. Relationship between magnetic flux density and F in electron beam tunnel
图 5 电子注通道内磁通密度与M的关系
Figure 5. Relationship between magnetic flux density and M in electron beam tunnel
图 6 电子注通道内磁通密度与H的关系
Figure 6. Relationship between magnetic flux density and H in electron beam tunnel
图 7 电子注通道内磁通密度与Q的关系
Figure 7. Relationship between magnetic flux density and Q in electron beam tunnel
图 8 电子注通道内磁通密度与Ry1的关系
Figure 8. Relationship between magnetic flux density and Ry1 in electron beam tunnel
图 9 四注行波管PPM聚焦系统电子注通道中心轴线上磁通密度分布
Figure 9. Distribution of magnetic flux density on central axis in electron beam tunnel of PPM focusing system of four-beam TWT
图 10 优化前后极靴磁通密度分布云图
Figure 10. Magnetic flux density distribution of pole piece before and after optimization
-
[1] 廖平, 杨中海, 雷文强. 周期永磁聚焦电子注性能计算机模拟[J]. 强激光与粒子束, 2004, 16(1): 68-72. http://www.hplpb.com.cn/article/id/732Liao Ping, Yang Zhonghai, Lei Wenqiang. Computer simulation of electron beam characteristics focused by periodic permanent magnets. High Power Laser and Particle Beams, 2004, 16(1): 68-72 http://www.hplpb.com.cn/article/id/732 [2] 邓光晟, 杨军, 阮久福, 等. 多注行波管PPM聚焦磁场设计方法研究[J]. 真空科学与技术学报, 2013, 33(6): 528-534. doi: 10.3969/j.issn.1672-7126.2013.06.05Deng Guangsheng, Yang Jun, Ruan Jiufu, el at. Design of periodic permanent magnetic focusing system for multi-beam traveling wave tubes. Chinese Journal of Vacuum Science and Technology, 2013, 33(6): 528-534 doi: 10.3969/j.issn.1672-7126.2013.06.05 [3] 丛培亮, 邓光晟, 杨军, 等. 耦合腔行波管PPM聚焦系统横向磁场分析[J]. 电子科技, 2011, 24(10): 14-16, 27. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKK201110007.htmCong Peiliang, Deng Guangsheng, Yang Jun, et al. Analysis of transverse magnetic fields in asymmetric PPM focusing system for coupled-cavity TWTS. Electronic Science and Technology, 2011, 24(10): 14-16, 27 https://www.cnki.com.cn/Article/CJFDTOTAL-DZKK201110007.htm [4] 查文锦, 杨定义. 耦合腔行波管PPM聚焦系统中横向磁场的研究[J]. 真空电子技术, 2008(6): 5-7, 12. https://www.cnki.com.cn/Article/CJFDTOTAL-ZKDJ200806005.htmZha Wenjin, Yang Dingyi. Study on transverse magnetic field of the periodic permanent magnet focusing system of coupled cavity TWTS. Vacuum Electronics, 2008(6): 5-7, 12 https://www.cnki.com.cn/Article/CJFDTOTAL-ZKDJ200806005.htm [5] 吴初锚, 吕国强, 杨军. 多注行波管周期永磁聚焦系统[J]. 强激光与粒子束, 2008, 20(3): 461-463. http://www.hplpb.com.cn/article/id/3262Wu Chumao, Lü Guoqiang, Yang Jun. Periodic permanent magnet focusing system for multi-beam traveling wave tube. High Power Laser and Particle Beams, 2008, 20(3): 461-463 http://www.hplpb.com.cn/article/id/3262 [6] Gilmour A S. Principles of traveling wave tubes[M]. 北京: 中国电子科技集团公司第十二研究所, 1994: 106-117.Gilmour A S. Principles of traveling wave tubes. Beijing: The 12th Research Institute of China Electronics Technology Corporation, 1994: 106-117 [7] 邓光晟, 吕国强, 陈增泉, 等. 一种新型周期永磁聚焦系统过渡区的设计[J]. 强激光与粒子束, 2007, 19(7): 1187-1191. http://www.hplpb.com.cn/article/id/3122Deng Guangsheng, Lü Guoqng, Chen Zengquan, et al. Design of new structure of transition region for periodic permanent magnetic focusing. High Power Laser and Particle Beams, 2007, 19 (7): 1187-1191 http://www.hplpb.com.cn/article/id/3122 [8] 王林梅, 甘邠, 袁涛, 等. 行波管周期永磁聚焦系统机构优化设计[J]. 磁性材料与器件, 2012, 43(5): 35-39. https://www.cnki.com.cn/Article/CJFDTOTAL-QJGY201911010.htmWang Linmei, Gan Bin, Yuan Tao, et al. Optimization of periodic permanent magnet focusing system for traveling-wave tubes. Journal of Magnetic Materials and Devices, 2012, 43(5): 35-39 https://www.cnki.com.cn/Article/CJFDTOTAL-QJGY201911010.htm [9] 张强, 胡银富, 李天一, 等. 四注集成行波管电子光学系统设计和优化[J]. 真空电子技术, 2015(3): 1-3. https://www.cnki.com.cn/Article/CJFDTOTAL-ZKDJ201503001.htmZhang Qiang, Hu Yinfu, Li Tianyi, et al. Four beams integrated TWT electron optical system design and optimization. Vacuum Electronics, 2015(3): 1-3 https://www.cnki.com.cn/Article/CJFDTOTAL-ZKDJ201503001.htm [10] 杨丽娜, 杨军, 邓光晟, 等. 一种高效率多注毫米波行波管的设计模拟[J]. 真空电子技术, 2011(5): 32-36. https://www.cnki.com.cn/Article/CJFDTOTAL-ZKDJ201105009.htmYang Li'na, Yang Jun, Deng Guangsheng, et al. A design simulation of high efficiency multi-beam millimeter-wave traveling wave tube. Vacuum Electronics, 2011(5): 32-36 https://www.cnki.com.cn/Article/CJFDTOTAL-ZKDJ201105009.htm -
下载:
点击查看大图
计量
- 文章访问数: 1406
- HTML全文浏览量: 230
- PDF下载量: 40
- 被引次数: 0
