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Abstract:
The Electron Cloud Instability (ECI) may occur in a positively charged particle storage ring when the machine is operated with a multi-bunch beam. The related experiments have been carried out on the Beijing Electron Positron Collider (BEPC) since 1996. The phenomena of the ECI are mainly coupled bunch oscillation and transverse beam size blow up. The ECI studies at the BEPC are reviewed in this paper, both on experiments and on simulations. The potential methods to suppress the ECI in a positron storage ring have been summarized from the studies.
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