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Mitsuhashi, T.M.

Paper Title Page
TUPTPF015 Suppression of Longitudinal Coupled-bunch Instabilities at the KEK-PF 120
 
  • T. Obina, J.W. Flanagan, T. Honda, T.M. Mitsuhashi, M. Tadano, M. Tobiyama
    KEK, Ibaraki
  • W.X. Cheng, J.D. Fox
    SLAC, Menlo Park, California
  • D. Teytelman
    Dimtel, San Jose
  
 

A bunch-by-bunch feedback system has been developed to suppress longitudinal coupled-bunch instabilities at the KEK-PF. A generalpurpose signal processor, called iGp, has been developed by a collaboration among KEK, SLAC and INFN-LNF. A longitudinal kicker based on the DAΦNE-type over-damped cavity was designed and installed in the ring. The whole feedback loop was closed at the end of June 2007. The longitudinal dipole-mode instabilities are successfully suppressed up to 430 mA. The performance and the details of the system will be presented in this paper.