Title :
HOM damped NC passive harmonic cavities at BESSY
Author :
Anders, W. ; Kuske, P.
Author_Institution :
BESSY, Berlin, Germany
Abstract :
HOM damped normal conducting passive harmonic cavities are developed and installed at the BESSY II storage ring. The mechanical and electrical parameters and the operation modes are described. The operational parameters are presented, showing good agreement of bunch lengthening, synchrotron frequency shift and increase of Touschek lifetime. Measured data of the transient shift of the synchronous phase driven by the harmonic cavities are presented. Due to the HOM dampers no coupled bunch modes of the beam are driven by the harmonic cavity.
Keywords :
accelerator cavities; electron accelerators; particle beam bunching; particle beam dynamics; particle beam stability; storage rings; BESSY II storage ring; Touschek lifetime; beam bunch modes; electrical parameter; higher-order mode damped normal conducting passive harmonic cavities; mechanical parameter; operation modes; operational parameters; synchrotron frequency shift; Copper; Damping; Electrons; Filling; Frequency; Phase measurement; Resonance light scattering; Storage rings; Synchrotrons; Voltage;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1289647
