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Triantafyllou, A.

Paper Title Page
MOPP108 Status of HOM Damped Room-temperature Cavities for the ESRF Storage Ring 808
 
  • V. Serriere, A. K. Bandyopadhyay, L. Goirand, J. Jacob, D. Jalas, B. Ogier, A. Triantafyllou
    ESRF, Grenoble
  • N. Guillotin
    SOLEIL, Gif-sur-Yvette
  
  At the ESRF, longitudinal coupled bunch instabilities driven by cavity HOM are currently avoided up to the nominal current of 200 mA by precisely controlling the temperatures of the six five-cell cavities installed on the storage ring. A longitudinal bunch by bunch feedback has recently allowed to overcome the remaining HOM and thereby increase the current in the storage ring to 300 mA. In parallel, HOM damped room-temperature cavities are being developed for highly reliable passive operation at 300 mA. They are designed for a possible later upgrade to higher currents.