ICFA Beam Dynamics Workshop 2010, Daresbury. CLIC Crab Cavity and Wakefields. Praveen Ambattu CLIC crab group Cockcroft Institute / Lancaster University / University of Manchester / ASTeC. Crab Cavity Operation. BDS chapter of the CLIC CDR,
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CLIC Crab Cavity and Wakefields
CLIC crab group
Cockcroft Institute / Lancaster University
/ University of Manchester / ASTeC
BDS chapter of the CLIC CDR,
Bunch(es) can excite a variety of modes with different properties
The most dangerous in the group is the SOM which has the same frequency and kick as the operating mode but in the vertical plane.
Single mode-Multibunch-Transverse wake:
1 MHz off
1) Fixed offset for all bunches
2) Fixed offset and sign alternation bunch-to-bunch
3) Random offset and random sign
Damping is essential !
Random offset and random sign, Q=30
Single mode-Multibunch-Longitudinal wake:
V. Khan, R.M. Jones, CI / UMAN