Author :
Guo, Z.Y. ; Huang, H. ; Li, S.P. ; Liu, D.K. ; Luo, Y. ; Ma, L. ; Qin, Q. ; Wang, L.E. ; Wang, J.Q. ; Wang, S.H. ; Xu, J.W. ; Ye, K.R. ; Zhang, C. ; Zhou, F. ; Chin, Y.H. ; Fukuma, H. ; Hiramatsu, S. ; Izawa, M. ; Kasuga, T. ; Kikutani, E. ; Kobayashi, Y.
Abstract :
An experiment investigating the photoelectron instability has been performed in BEPC at IHEP, China. The betatron oscillation of each bunch was observed and recorded by a single pass beam position monitor system which has a capability to measure the transverse position of every bunch over 16000 turns. The effect of an octupole magnet on the instability was also studied. This paper describes results of those observations and analyses
Keywords :
electron accelerators; particle beam bunching; particle beam stability; storage rings; BEPC; beam-photoelectron instability; betatron oscillation; octupole magnet; single pass beam position monitor system; transverse position; Damping; Magnetic analysis; Magnetic field measurement; Monitoring; Position measurement; Positrons; Radio frequency; Spectral analysis; Stability; Threshold current;
