Simulation Analysis of Head-Tail Motion Caused by Electron Cloud

Authors :: E. Perevedentsev
H. Fukuma
K. Ohmi
J.W. Flanagan
Shigenori Hiramatsu
M. Tobiyama
H. Ikeda
Source :: Proceedings of the 2005 Particle Accelerator Conference.
Publication Year :: 2006
Publisher :: IEEE, 2006.
Abstract: Synchro-beta side band signal caused by electron cloud instability has been observed at KEK-B factory. The side-band appears above the threshold of beam size blow-up and disappears by exciting solenoid magnets which covers whole ring. The side-band is an evidence of strong head-tail instability caused by electron cloud. The side-band appears in tune spectrum with positive shift ν β + aν s (1 β − aν s (a > 0). We study the synchro-beta spectrum using a code, PEHTS, which simulates single bunch electron cloud instability.