Influence of the washer-rod structure on high frequency characteristics of wide-gap klystron cavity

Bai Xian-Chen; Zhang Jian-De; Yang Jian-Hua

doi:10.7498/aps.62.024102

Abstract

Using the HFSS and MAGIC code, influences of the washer/rod structure on the high frequency characteristics and the basic operation of the wide-gap klystron amplifier (WKA) are presented. Generally, the rod structure has a great influence on the space-charge potential depression and the eigenmode resonant frequency of the cavity. Once the rods are employed, the space charge field can be nearly eliminated with only 4 washers. Moreover, the presence of the rods raises the cavity eigenmode resonant frequency by ～ 9.0% due to their comparable lumped inductance to the cavity's inherent inductance. Nevertheless, if only the cavities are tuned to the desired operation frequency, the effect of the rod size on the basic operation of the WKA is expected to be very small.

Keywords:

Authors and contacts

1.
College of Opto-Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
Funds: Project supported by the National High Technology Research and Development Program of China.

References

[1]	Carlsten B E, Faehl R J, Fazio M V, Haynes W B, Stringfield R M 1994 IEEE Trans. Plasma Sci. 22 719
[2]	Hubbard R F, Lampe M, Friedman M, Serlin V, Fernsler R F, Slinker S P, Haber I, Colombant D 1994 Proc. SPIE 2154 61
[3]	Pasour J A, Smithe D, Friedman M 1998 AIP Conf. Proc. 474 373
[4]	Huang H, Meng F B, Fan Z K, Li Z H, Fang X 2006 Acta Phys. Sin. 55 5344 (in Chinese) [黄华, 孟凡宝, 范植开, 李正红, 方向 2006 物理学报 55 5344]
[5]	Song W, Liu G Z, Lin Y Z, Shao H. 2008 High Power Laser and Particle Beams 20 1322 (in Chinese) [宋玮, 刘国治, 林郁正, 邵浩 2008 强激光与粒子束 20 1322]
[6]	Friedman M, Fernsler R, Slinker S, Hubbard R, Lampe M 1995 Phys. Rev. Lett. 75 1214
[7]	Friedman M, Serlin V, Lampe M, Hubbard R, Colombant D, Slinker S 1995 Phys. Rev. Lett. 74 322
[8]	Lampe M, Hubbard R F, Friedman M, Serlin V, Slinker S P, Fernsler R F, Colombant D 1994 Proc. SPIE 2154 49

Cited By

[1]	Carlsten B E, Faehl R J, Fazio M V, Haynes W B, Stringfield R M 1994 IEEE Trans. Plasma Sci. 22 719
[2]	Hubbard R F, Lampe M, Friedman M, Serlin V, Fernsler R F, Slinker S P, Haber I, Colombant D 1994 Proc. SPIE 2154 61
[3]	Pasour J A, Smithe D, Friedman M 1998 AIP Conf. Proc. 474 373
[4]	Huang H, Meng F B, Fan Z K, Li Z H, Fang X 2006 Acta Phys. Sin. 55 5344 (in Chinese) [黄华, 孟凡宝, 范植开, 李正红, 方向 2006 物理学报 55 5344]
[5]	Song W, Liu G Z, Lin Y Z, Shao H. 2008 High Power Laser and Particle Beams 20 1322 (in Chinese) [宋玮, 刘国治, 林郁正, 邵浩 2008 强激光与粒子束 20 1322]
[6]	Friedman M, Fernsler R, Slinker S, Hubbard R, Lampe M 1995 Phys. Rev. Lett. 75 1214
[7]	Friedman M, Serlin V, Lampe M, Hubbard R, Colombant D, Slinker S 1995 Phys. Rev. Lett. 74 322
[8]	Lampe M, Hubbard R F, Friedman M, Serlin V, Slinker S P, Fernsler R F, Colombant D 1994 Proc. SPIE 2154 49

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