强激光与粒子束, 2010, 22 (12): 2930, 网络出版: 2011-01-05   

S波段大间隙速调管放大器输出腔的3维模拟

3-D simulation of S-band wide-gap klystron amplifier output cavity
作者单位
国防科学技术大学 光电科学与工程学院, 长沙 410073
摘要
利用3维高频软件设计了一种用于S波段大间隙速调管的膜片加载大间隙单重入输出腔, 建立了带大耦合孔的输出腔3维全结构模型, 采用3维PIC程序对输出腔的提取效果进行了粒子模拟。研究结果表明:膜片加载的大间隙单重入输出腔开大耦合孔后, 其所有谐振频点的场分布都不再是TM011模式, 因此,在设计此类输出腔时不能以工作频点是否谐振为优化目标。提出了大间隙输出腔设计原则, 根据设计原则优化后的输出腔可稳定提取1.07 GW的平均功率, 提取效率约35.7%。
Abstract
High frequency characteristics analysis is presented on a washer loaded wide-gap reentrant output cavity for the S-band relativistic wide-gap klystron amplifier(WKA). At resonant frequency points, the electric field modes of the wide-gap output cavity with large coupling hole are not TM011 anymore. To avoid these unwanted modes and their influences on cavity gap field distribution, a large enough distance between designed working frequency and resonant frequency is required. At the same time, an effort to reduce the output cavity external quality factor is also necessary. The output cavity power extraction effect was simulated by using a three-dimension fully electromagnetic particle-in-cell(PIC) code. At beam voltage of 600 kV, cathode current of 5 kA and current modulation depth of 94%, the average output power of an optimized washer loaded wide-gap reentrant cavity is 1.07 GW at 3.6 GHz, with an average power efficiency of about 35.7%.
参考文献

[1] Carlsten B E, Faehl R J, Fazio M V, et al. Beam-cavity interaction physics for mildly relativistic, intense-beam klystron amplifier[J]. IEEE Trans on Plasma Sci, 1994, 18(5):730-738.

[2] Lau Y Y, Friedman M, Krall J, et al. Relativistic klystron amplifier driven by modulated intense relativistic electron beams[J]. IEEE Trans on Plasma Sci, 1990, 18(3):553-569.

[3] Wilsen C B, Luginsland J W, Lau Y Y, et al. A simulation study of beam loading on a cavity[J]. IEEE Trans on Plasma Sci, 2002, 30(3):1160-1168.

[4] 黄华,孟凡宝,范植开,等.大耦合孔同轴输出腔的3维解析分析[J].强激光与粒子束, 2004, 16(12):1571-1575.(Huang Hua, Meng Fanbao, Fan Zhikai, et al. 3-D analysis on the coaxial output cavity with large coupling hole. High Power Laser and Particle Beams, 2004, 16(12):1571-1575)

[5] 雷禄容,范植开,黄华,等.S波段相对论速调管放大器同轴输出腔的数值模拟[J].强激光与粒子束, 2006, 18(10):1677-1681.(Lei Lurong, Fan Zhikai, Huang Hua, et al. Numerical simulation of coaxial output cavity of S-band relativistic klystron amplifier. High Power Laser and Particle Beams, 2006, 18(10):1677-1681)

[6] 雷禄容,范植开,黄华,等.相对论速调管放大器双间隙输出腔的粒子模拟[J].强激光与粒子束, 2007, 19(8):1338-1342.(Lei Lurong, Fan Zhikai, Huang Hua, et al. Particle simulation of relativistic klystron amplifier double-gap output cavity. High Power Laser and Particle Beams, 2007, 19(8):1338-1342)

[7] 雷禄容,范植开,黄华,等.S波段速调管双间隙输出腔的设计和实验研究[J].强激光与粒子束, 2008, 20(1):103-107.(Lei Lurong, Fan Zhikai, Huang Hua, et al. Design and investigation of S-band klystron double-gap output cavity. High Power Laser and Particle Beams, 2008, 20(1):103-107)

[8] 雷禄容,范植开,黄华,等.S波段相对论速调管放大器输入腔的3维分析与模拟[J].强激光与粒子束, 2008, 20(3):455-459.(Lei Lurong, Fan Zhikai, Huang Hua, et al. Three dimensional analysis and simulation of input cavity for S-band relativistic klystron amplifier. High Power Laser and Particle Beams, 2008, 20(3):455-459)

[9] 雷禄容,范植开,黄华,等.速调管输入腔开放腔的高频特性分析与实验研究[J].强激光与粒子束, 2009, 21(4):511-515.(Lei Lurong, Fan Zhikai, Huang Hua, et al. High frequency characteristics analysis and experimental study on open input cavity for klystron. High Power Laser and Particle Beams, 2009, 21(4):511-515)

[10] 雷禄容,黄华,范植开,等.C波段相对论速调管放大器3维整管模拟研究[J].强激光与粒子束, 2009, 21(6):879-882.(Lei Lurong, Huang Hua, Fan Zhikai, et al. Three-dimensional whole-tube simulation of C-band relativistic klystron amplifier. High Power Laser and Particle Beams, 2009, 21(6):879-882)

[11] 宋玮,刘国治,林郁正,等.感性加载宽间隙相对论速调管的粒子模拟[J].强激光与粒子束, 2008, 20(8):1322-1326.(Song Wei, Liu Guozhi, Lin Yuzheng, et al. Particle simulation of S-band inductively loaded wide gap cavity relativistic klystron amplifier. High Power Laser and Particle Beams, 2008, 20(8):1322-1326)

[12] Friedman M, Serlin V, Lampe M, et al. Intense electron beam modulation by inductively loaded wide gaps for relativistic klystron amplifier[J]. Phys Rev Lett, 1995, 74(2):322-325.

[13] Lampe M, Hubbard R F, Friedman M, et al. Inductively-loaded wide-gap designs for relativistic klystrons[C]//Proc of SPIE. 1994, 2154:49-60.

[14] Branch G M. Electron beam coupling in interaction gaps of cylindrical symmetry[J]. IRE Trans on Electron Dev, 1961, 8(3):193-207.

[15] 王文祥.微波工程技术[M].北京:国防工业出版社, 2009:446-447.(Wang Wenxiang. Microwave engineering technology. Beijing: Natio-nal Defense Industry Press, 2009:446-447)

白现臣, 张建德, 杨建华. S波段大间隙速调管放大器输出腔的3维模拟[J]. 强激光与粒子束, 2010, 22(12): 2930. Bai Xianchen, Zhang Jiande, Yang Jianhua. 3-D simulation of S-band wide-gap klystron amplifier output cavity[J]. High Power Laser and Particle Beams, 2010, 22(12): 2930.

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