Robinson instabilities with a higher-harmonic cavity

A radio frequency system with a fourth-harmonic “Landau” cavity suppresses coupled-bunch instabilities and increases the beam lifetime of the Aladdin electron storage ring. When the storage ring is operated with a small momentum compaction, instabilities limit the utility of the Landau cavity. Analy...

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Bibliographic Details
Published in:Physical review special topics. PRST-AB. Accelerators and beams 2001-07, Vol.4 (7), p.074401, Article 074401
Main Authors: Bosch, R. A., Kleman, K. J., Bisognano, J. J.
Format: Article
Language:English
Subjects:
Dipoles
Quadrupoles
Stability analysis
Storage rings (particle accelerators)
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Summary:A radio frequency system with a fourth-harmonic “Landau” cavity suppresses coupled-bunch instabilities and increases the beam lifetime of the Aladdin electron storage ring. When the storage ring is operated with a small momentum compaction, instabilities limit the utility of the Landau cavity. Analytical modeling of instability frequencies and growth rates, simulations, and experiments suggest that the observed instabilities result from coupling between dipole and quadrupole Robinson modes.
ISSN:1098-4402
1098-4402
2469-9888
DOI:10.1103/PhysRevSTAB.4.074401