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TY - CONF AU - Steinmann, J.L. AU - Blomley, E. AU - Brosi, M. AU - Bründermann, E. AU - Mochihashi, A. AU - Müller, A.-S. AU - Schuh, M. AU - Schönfeldt, P. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Increasing the Single-Bunch Instability Threshold by Bunch Splitting Due to RF Phase Modulation J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - RF phase modulation at twice the synchrotron frequency can be used to split a stored electron bunch into two or more bunchlets orbiting each other. We report on time-resolved measurements at the Karlsruhe Research Accelerator (KARA), where this bunch splitting was used to increase the threshold current of the microbunching instability, happening in the short-bunch operation mode. Turning the modulation on and off reproducibly affects the sawtooth behavior of the emitted coherent synchrotron radiation. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3193 EP - 3196 KW - synchrotron KW - radiation KW - detector KW - electron KW - synchrotron-radiation DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-WEPAB240 UR - https://jacow.org/ipac2021/papers/wepab240.pdf ER -