Journal
PHYSICAL REVIEW LETTERS
Volume 85, Issue 18, Pages 3821-3824Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.3821
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In positron or proton storage rings with many closely spaced bunches,an electron cloud can build up in the vacuum chamber due to photoemission or secondary emission. We discuss the possibility of a single-bunch two-stream instability driven by this electron cloud. Depending on the strength of the beam-electron interaction, the chromaticity and the synchrotron oscillation frequency, this instability either resembles a linac beam breakup or a head-tail instability. We present computer simulations of the instabilities, and compare the simulation results with analytical estimates.
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