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TY - CONF AU - Brosi, M. AU - Boltz, T. AU - Bründermann, E. AU - Funkner, S. AU - Kehrer, B. AU - Müller, A.-S. AU - Nasse, M.J. AU - Niehues, G. AU - Patil, M.M. AU - Schreiber, P. AU - Schönfeldt, P. AU - Steinmann, J.L. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Synchronous Measurements of Electron Bunches Under the Influence of the Microbunching Instability J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - The microbunching instability is a longitudinal collective instability which occurs for short electron bunches in a storage ring above a certain threshold current. The instability leads to a charge modulation in the longitudinal phase space. The resulting substructures on the longitudinal bunch profile vary over time and lead to fluctuations in the emitted power of coherent synchrotron radiation (CSR). To study the underlying longitudinal dynamics on a turn-by-turn basis, the KIT storage ring KARA (Karlsruhe Research Accelerator) provides a wide variety of diagnostic systems. By synchronizing the single-shot electro-optical spectral decoding setup (longitudinal profile), the bunch-by-bunch THz detection systems (THz power) and the horizontal bunch size measurement setup (energy spread), three important properties of the bunch during this instability can be measured at every turn for long time scales. This allows a deep insight into the dynamics of the bunch under the influence of the microbunching instability. This contribution will discuss effects like the connection between the emitted CSR power and the deformations in the longitudinal bunch profile on the time scale of the instability. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3119 EP - 3122 KW - synchrotron KW - radiation KW - bunching KW - simulation KW - storage-ring DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-WEPTS015 UR - http://jacow.org/ipac2019/papers/wepts015.pdf ER -