Abstract
The paper mainly presents the design of beam-wave interaction of a C-band high-peak-power high-efficiency broadband klystron. The beam-wave interaction section is designed based on considerations of efficiency and bandwidth synthetically. As a part of beam-wave interaction section, buncher section is simulated by Particle-In-Cell (PIC) code to observe the bunching process of electron beam to achieve high conversion efficiency of electron beam and RF field. When it comes to the other part, output circuit is designed as a three-section filter by an output cavity loaded with Chebyshev filter, and the cold test results are given. The beam-wave interaction is simulated by EGUN code and Arsenal-MSU code respectively. The simulated results indicated that, the existence of power dips in the operating bandwidth is verified by Arsenal-MSU code, comparing proper results by EGUN code. Then, the method that design parameters are not adjusted except parameters of buncher cavities to remove potential power dips is described. What is more, the simulated results of electron optics system are given by EGUN code and Arsenal-MSU code respectively. The further hot test results of klystron prove that the whole design of beam-wave interaction is effective.
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References
J. A. Mann. Wide bandwidth high-efficiency high gain klystron amplifier. Microwave Power Tube Conference, Monterey, CA, USA, 1982, 5–7.
J. P. Randle, D. Perring, V. R. Nuth. Broadband klystron. Vacuum, 30(1980)11–12, 455–458.
A. J. Durand. 15% bandwidth high power S band klystron. European Microwave Conference, Stuttgart, Germany, 1991, 263–266.
Yaogen Ding, Pukun Liu, Zhaochuan Zhang, and Yong Wang. An overview of advances in vacuum electronics in China. Proceedings of 2011 IEEE International Vacuum Electronics Conference (IVEC), Bangalore, India, 2011, 525–528.
N. Delu. An S-band klystron with advanced features. Proceedings of 1999 International University Conference on Electronics and Radiophysics of Ultra-High Frequencies, St. Petersburg, Russia, May 1999, 70–74.
Wang Yong, Yao-Gen Ding, Pu-Kun Liu, Jian Zhang, Shu-Guo Wang, and Xi Lu. Development of an S-band klystron with bandwidth of more than 11%. IEEE Transactions on Plasma Science, 34(2006)3, 572–575.
Yong Wang, Yaogen Ding, Pukun Liu, Zhiqiang Zhang, and Jian Zhang. 12.4: Research progress of S-band klystron in IECAS. Proceedings of 2010 IEEE International Vacuum Electronics Conference (IVEC), Monterey, CA, USA, 2010, 219–220.
J. Xie and Y. Zhao. Bunching Theory of Klystron. Science Press, 1966, 155–156.
T. G. Mihran, G. M. Branch, Jr., and G. J. Griffin, Jr. Electron bunching and output gap interaction in broad-band klystrons. IEEE Transactions on Electron Devices, 19(1972)9, 1011–1017.
T. G. Mihran, G. M. Branch, Jr., and G. J. Griffin, Jr. design and demonstration of a klystron with 62 percent efficiency. IEEE Transactions on Electron Devices, 18(1971)2, 124–133.
R. S. Symons. Scaling laws and power limits for klystrons. 1986 International Electron Devices Meeting, San Carlos, CA, USA, 1986, 156–159.
Di Jun, Zhu Da-Jun, and Liu Sheng-gang. Electromagnetic field algorithms of CHIPIC code. Journal of University of Electronic Science and Technology, 34(2005)4, 485–488.
R. L. Metiver. Broadband klystron for multi-megawatt radars. Microwave Journal, 14(1971), 29–32.
H. Yonezawa and Y. Okazaki. A one-dimensional disk model simulation for klystron design. Stanford Linear Accelerator Center, Stanford, CA, USA, SLAC-TN-84-5, 1984.
A. N. Sandalov, V. M. Pikunov, V. E. Rodyakin, G. Faillon, and Y. Thaler. Animation of nonlinear electron-wave interaction in klystron. Proceedings of Pulse RF Sources Linear Colliders, Kanagawa, Japan, April 1996, 8–12.
Zhaochuan Zhang, Junjie Fan, Yuwen Zhang, and Ruimin Wang. Development of a C-band klystron with a 360-MHz instantaneous bandwidth. IEEE Transactions on Electron Devices, 57(2010)12, 3485–3490.
Zhaochuan Zhang, Baoli Shen, Xiaojuan Yu, and Fang Zhu. Development of an S-band 22-kW-average-power-klystron with 7.14% relative bandwidth. IEEE Transactions on Electron Device, 58(2011)8, 2789–2795.
A. V. Malykhin, V. I. Pasmannik, Ye. P. Yakushin. Zeros is amplitude-frequency characteristics of wide-band klystrons. IEEE Conference on Electronics and Radio physics of Ultra-High Frequencies, St Petersburg, Russia, 1999, 60–62.
Y. Ding, Y. Zhu, X. Yin, et al.. Research progress on C-band broadband multi-beam klystron. IEEE Transactions on Electron Devices, 54(2007)4, 624–631.
Yaogen Ding. Design, Manufacture and Application of High Power Klystron. Beijing, National Defense Industry Press, 2010, 49.
W. B. Herrmannsfeldt. EGUN: An electron optics and gun design program. Stanford Linear Accelerator Center, Menlo Park, CA, USA, AC03-76SF00515, 1988.
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Communication author: Qu Zhaowei, born in 1981, male; Master’s Degree.
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Qu, Z., Zhang, Z., Liu, P. et al. Design of beam-wave interaction based on high efficiency of a high-power broadband klystron. J. Electron.(China) 31, 151–158 (2014). https://doi.org/10.1007/s11767-014-3176-9
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DOI: https://doi.org/10.1007/s11767-014-3176-9
Key words
- Klystron
- Beam-wave interaction
- Considerations of efficiency and bandwidth
- Power dips
- Electron optics system