Simulation of Multipacting with Space Charge Effect
American Journal of Physics and Applications
Volume 5, Issue 6, November 2017, Pages: 99-105
Received: Aug. 11, 2017; Accepted: Sep. 25, 2017; Published: Nov. 6, 2017
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Gennady Romanov, Fermi National Accelerator Laboratory, Batavia, Illinois, USA
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The electron multiplication on surfaces exposed to an oscillating electromagnetic field causes the phenomenon of multipacting, which can degrade significantly the performance of vacuum RF devices, especially accelerating cavities. It is a serious obstacle to be avoided for normal operation of particle accelerator and their RF components. Many types of room temperature and superconducting accelerating cavities are designed and produced at Fermilab for different projects. The extensive simulations of multipacting in the cavities with updated material properties and comparison of the simulation results with experimental data are routinely performed during electromagnetic design of the cavities. The new advanced computing capabilities made it possible to take the space charge effect into account in the multipacting simulations. The basic new features of multipacting process that appear due to the space charge effect are shown for the classic case of the parallel plates and discussed. As the first practical application of the multipacting simulations with space charge effect the study of multipacting in the low-beta and high-beta 650 MHz elliptical superconducting cavities is also presented.
Multipacting, Accelerator, Cavity, Secondary Emission, Space Charge
To cite this article
Gennady Romanov, Simulation of Multipacting with Space Charge Effect, American Journal of Physics and Applications. Vol. 5, No. 6, 2017, pp. 99-105. doi: 10.11648/j.ajpa.20170506.15
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Z. A. Conway et al, “Achieving High Peak Fields and Low Residual Resistance in Half-Wave Cavities”, in Proc. SRF’15, Whistler, BC, Canada, 2015, paper WEBA05, pp. 973-975.
Gennady Romanov, Paolo Berrutti and Timergali N. Khabiboulline, “Simulation of Multipacting in SC Low Beta Cavities at FNAL”, in Proc. IPAC’15, Richmond, Virginia, USA, 2015, paper MOPMA018, pp. 579-581.
D. K. Callebout, “Secondary Electron Resonance Discharge: I. Steady State by Debunching”, Physica, Issue 7, July 1963, pp. 784-802.
C. J. Lingwood et al, “Phase space analysis of multipactor saturation in rectangular waveguide”, Physics of Plasmas 19, 032106 (2012).
M. Buyanova et al, “Influence of secondary emission yield on the saturation properties of multipactor discharges between two parallel metal plates”, Physics of Plasmas 17, 043504 (2010).
E. Sorolla and M. Mattes, “Multipactor saturation in parallel-plate waveguides”, Phys. Plasmas 19, 072304 (2012).
A. J. Hatch and H. B. Williams, “Multipacting Modes of High-Frequency Gaseous Breakdown”, The Physical Review, 2nd series, Vol. 112, No. 3, November 1, 1958.
R. Seviour, “The Role of Elastic and Inelastic Reflection in Multipactor Discharges”, IEEE Trans. on Electron Devices, vol. 54, No 8, August, 2005.
G. Romanov, «Stochastic Features of Multipactor in Coaxial Waveguides for Travelling and Standing Waves», preprint PUB-11-003-TD, Fermilab, Batavia, IL 60510, USA, 2011.
P. Berutti, T. Khabiboulline, G. Romanov, «Multipactor Discharge in the PIP-II Superconducting Spoke Resonators», Fermilab, Technical division, Technical note TD-16-005, 2016.
D. Proch, D. Einfeld, R. Onken, and N. Steinhauser, “Measurement of multipacting currents of metal surfaces in RF fields”. WPQ24, IEEE Proceedings, PAC 95, 1776, 1996.
Liao Lang et al, “Multipacting Saturation in Parallel Plate and Micro-Pulse Electron Gun”, Chinese Phys. C, Volume 39, Number 2, March 2014.
Волков В. А., Ганичев Д. А., «Стационарное состояние вакуумного вторично-эмиссионного ВЧ разряда», Журн. техн. физ., 1982, т. 52, № 8, с. 1559-1563.
Ганичев Д. А., Станский В. А., Фридрихов А. С., «Экспериментальное исследование эмиссии вторичных электронов на свервысоких частотах», Изв. АН СССР, Сер. физ., 1971, т. 3 5, № 2, с. 268-269. 1982, т. 52, № 8, с. 1559-1563.
S. Riyopoulos, D. Chernin, D. Dialetis, “Theory of Electron Multipactor in Crossed Fields”, Physics of Plasmas, Issue 8, Volume 2, 1995, pp 3194 - 3213.
C. W. Hoover, Jr., and R. K. Smither, "Secondary Electron Resonance Discharge Mechanism”, Phys Rev. 98, 1149, (1955).
M. Siddiqi, R. Kishek, “Simulation of Ping-Pong Multipactor With Continuous Electron Seeding”, in Proc. NA-PAC’16, Chicago, IL, USA, 2017, paper MOPOB53, pp. 181-183.
S. Kazakov, I. Gonin and V. P. Yakovlev, “Multipactor Simu-lation in SC Elliptical Shape Cavities”, in Proc. IPAC’12, New Orleans, Virginia, USA, 2012, paper WEPPC051, pp. 2327-2329.
F. Marhauser et al, “Design, Fabrication and Testing of Me-dium-Beta 650 MHz SRF Cavity Prototypes for Project-X”, in Proc. IPAC’11, San Sebastián, Spain, 2011, paper MOPC114, pp. 343-345.
V. P. Yakovlev, private communication, April 2016.
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