Numerical study of coupled-bunch instability caused by an electron cloud

An electron cloud induces a wake force on a charged particle beam which creates correlations between bunches—i.e., a small displacement of a bunch creates a perturbation of the electron cloud, which affects the motions of the following bunches, with the result that a coupled-bunch instability is cau...

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Bibliographic Details
Published in:Physical review special topics. PRST-AB. Accelerators and beams 2005-09, Vol.8 (9), p.094401, Article 094401
Main Authors: Win, S. S., Ohmi, K., Fukuma, H., Tobiyama, M., Flanagan, J., Kurokawa, S.
Format: Article
Language:English
Subjects:
Bend strength
Charged particles
Electron clouds
Electrons
Motion stability
Particle beams
Perturbation
Solenoids
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Summary:An electron cloud induces a wake force on a charged particle beam which creates correlations between bunches—i.e., a small displacement of a bunch creates a perturbation of the electron cloud, which affects the motions of the following bunches, with the result that a coupled-bunch instability is caused. The coupling mode of the instability is determined by the motion of the electrons in the cloud—that is, it depends on which electrons, moving in a drift space, a weak solenoid field or a strong bending field, are dominant for the instability. We discuss the coupled-bunch instability focusing on the relation between the mode spectrum and the electron motion.
ISSN:1098-4402
1098-4402
2469-9888
DOI:10.1103/PhysRevSTAB.8.094401