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Dresden 2020 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 5: Beam Dynamics

AKBP 5.1: Vortrag

Dienstag, 17. März 2020, 09:30–09:45, MOL 213

Systematic studies of RF phase modulation at KARA — •Sebastian Maier1, Edmund Blomley1, Tobias Boltz1, Akira Mochihashi2, Marcel Schuh2, and Anke-Susanne Müller1,21LAS, KIT, Karlsruhe — 2IBPT, KIT, Karlsruhe

At the KIT storage ring KARA (KArlsruhe Research Accelerator), the beam lifetime is limited by scattering with rest gas atoms, but also affected by Touschek scattering. It has been reported in previous work, that a bunch lengthening can be achieved by a modulation of the RF acceleration voltages' phase, which causes an excitation of longitudinal oscillation modes within the stored bunches. In this contribution, we present first results of a systematic study of phase modulation (PM) close to the second harmonic of the synchrotron oscillation frequency with peak-to-peak amplitudes between 10% and 20% of the synchronous phase, focusing explicitly on its impact on the beam lifetime.

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