Speaker
Description
Double rf systems are critical for achieving the parameters of fourth-generation light sources. These systems relax statistical collective effects but also introduce instabilities, such as Robinson and periodic transient beam loading (PTBL) instabilities with depend heavy on the cavity parameters. Using the SOLEIL II project as a case study, we demonstrate how we can use semianalytical algorithms to predict and analyze these instabilities, in conjonction with multibunch tracking simulations, to optimize rf cavity parameters in high-dimensional parameter spaces, thereby maximizing the Touschek lifetime. Finally, the expected performances of the double rf system, using the optimized normal conducting passive harmonic cavity parameters, are presented.
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