Transient beam loading effects in harmonic rf systems for light sources
Citations Over TimeTop 10% of 2002 papers
Abstract
Harmonic cavities have been used in storage rings to lengthen bunches and increase beam lifetimes dominated by Touschek scattering. Transient beam loading in the harmonic cavities generated by asymmetries in the fill pattern causes significant variation of the bunch synchronous phase and bunch length along the bunch train when the longitudinal restoring force has been reduced. This results in a significant reduction in the mean bunch lengthening and potential lifetime increase. We describe how beam current modulations give rise to transient effects much larger than expected from the linear model of the beam cavity interaction. We also develop a tracking simulation to predict results and apply this simulation to an analysis of the beam loading transients for the case of passive and active normal and superconducting third harmonic rf systems using Advanced Light Source parameters.
Related Papers
- → Beam-beam kicker for superfast bunch handling(1996)20 cited
- → Coherency of the long range beam-beam interaction in CESR(2002)1 cited
- → Luminosity Increase at the Incoherent Beam-Beam Limit with Six Superbunches in RHIC(2003)1 cited
- → Coherent beam-beam effect(1979)1 cited
- LUMINOSITY INCREASE AT THE INCOHERENT BEAM BEAM LIMIT WITH SIX SUPERBUNCHES IN RHIC.(2003)