Abstract
In this paper, a new pill-box window with arc groove disk is studied for S-band high power klystron. Its main characteristics are long pill-box and periodic grooved window disk. The long pill-box window can decrease the normal field and relieve the radio frequency loss in high power transmission, and periodic grooved window disk can suppress tangential field multipactor. The Monte Carlo (MC) method is used to build up the simulation model and analyze the increasing tendency of electrons. The simulation results indicate that long-box window with periodic arc grooved window disk can restrain multipactor effectively. Homocentric circular half-camber arc slot is put forward to overcome the disadvantages of periodic straight triangle and strait rectangular. The long pill-box with groove disk window prototype is tested in high power Travelling Wave Resonant Ring (TWRR) and the experimental results show an excellent character of this window.
Similar content being viewed by others
References
Seiya Yamaguchi, Yoshio Saito, Shozo Anami, et al.. Trajectory simulation of multipactoring electrons in an s-band Pillbox RF window. IEEE Transactions on Nuclear Science, 39(1992)2, 278–282.
Y. Saito, S. Michizono, S. Anami, and S. Kobayashi. Surface flashover on alumina RF windows for high-power use. IEEE Transactions on Electrical Insulation, 28(1993)4, 566–573.
K. Hirano, Y. L. Wang, T. Emoto, et al.. Development of a high power 1.2 MW CW L-band klystron. Proceedings of the Particle Accelerator Conference, Dallas, TX, USA, 1995, Vol. 3, 1539–1541.
Gregory Ford Edmiston, John T. Krile, and Andreas A. Neuber. Imaging of high-power microwave-induced surface flashover on a corrugated dielectric window. IEEE Transactions on Plasma Science, 36(2008)4, 946–947.
A. Neuber, D. Hemmert, J. Dickens, et al.. Window breakdown caused by high-power microwaves. IEEE Transactions on Plasma Science, 26(1998)3, 296–303.
C. Chang, G. Z. Liu, H. J. Huang, et al.. Suppressing high-power microwave dielectric multipactor by the Sawtooth surface. Physics of Plasmas, 16(2009), 083501.
C. Chang, H. J. Huang, G. Z. Liu, et al.. The effect of grooved surface on dielectric multipactor. Physics of Plasmas, 105(2009), 123305.
L. K. Ang, Y. Y. Lau, R. A. Kishek, et al.. Power deposited on a dielectric by multipactor. IEEE Transactions on Plasma Science, 26(1998)3, 290–295.
Fang Zhu, Zhaochuan Zhang, Jirun Luo, et al.. Investigation of the failure mechanism for an S-band pillbox output window applied in high-average-power klystrons. IEEE Transactions on Electron Devices, 57 2010)4, 946–950.
J. R. M. Vaughan. Some high power window failures. IEEE Transactions on Electron Devices, 8(1961)4, 302–308.
J. R. M. Vaughan. Multipactor. IEEE Transactions on Electron Devices, 35(1988)7, 1172–1180.
Z. S. Zhou, Y. L. Chi, M. P. Gu, et al.. 200MW S-band traveling wave resonant ring development at IHEP. Chinese Physics C, 34(2010)3, 402–404.
H. C. Kim and J. P. Verboncoeur. Time-dependent physics of a single-surface multipactor discharge. Physics of Plasmas, 12(2005), 123504.
A. A. Neuber, G. F. Edmiston, J. T. Krompholz, et al.. Interface breakdown during high-power microwave transmission. IEEE Transactions on Magnetics, 43 (2007)1, 496–500.
Author information
Authors and Affiliations
Corresponding author
Additional information
Supported by the Youth Scientific and Technological Innovation Funding.
About this article
Cite this article
Zhang, X., Wang, Y., Fan, J. et al. Development of new pill-box window for S-band high power klystron. J. Electron.(China) 31, 78–84 (2014). https://doi.org/10.1007/s11767-014-3127-5
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11767-014-3127-5