Speaker
Description
Double rf systems are critical for achieving the parameters of fourth-generation synchroton light sources. These systems relax stochastic collective effects but also introduce instabilities, such as Robinson and periodic transient beam loading (PTBL) instabilities, which depend heavily on the cavity parameters. In the framework of the SOLEIL II project, we demonstrate how we can use semianalytical algorithms to predict and analyze these instabilities, in conjunction 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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