München 2019 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 3: Beam Dynamics

AKBP 3.5: Vortrag

Montag, 18. März 2019, 17:30–17:45, HS 8

Influence of the Longitudinal Damping Time on the Micro-bunching Instability — •Miriam Brosi, Julian Gethmann, Patrick Schreiber, Johannes Steinmann, Benjamin Kehrer, Alexander Papasch, Axel Bernhard, Erik Bründermann, and Anke-Susanne Müller — Karlsruhe Institute of Technology, Karlsruhe, Deutschland

At the KIT storage ring KARA (KArlsruhe Research Accelerator), the momentum compaction factor can be reduced leading to natural bunch lengths in the ps range. Due to the high degree of longitudinal compression, the micro-bunching instability arises. During this longitudinal instability, the bunches emit bursts of intense coherent synchrotron radiation in the THz frequency range caused by the complex longitudinal dynamics. The temporal pattern of the emitted bursts depends on given machine parameters, like momentum compaction factor, acceleration voltage, and damping time. In this talk, the influence of the damping time is studied by utilizing the CLIC damping wiggler prototype installed in KARA as well as by simulations using the Vlasov-Fokker-Planck solver Inovesa.