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TY - CONF AU - Hiller, N. AU - Borysenko, A. AU - Hertle, E. AU - Judin, V. AU - Kehrer, B. AU - Marsching, S. AU - Müller, A.-S. AU - Nasse, M.J. AU - Peier, P. AU - Schlott, V. AU - Schuh, M. AU - Schönfeldt, P. AU - Smale, N.J. AU - Steffen, B. AU - Steinmann, J.L. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Status of Single-shot EOSD Measurement at ANKA J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - ANKA is the first storage ring in the world with a near-field single-shot electro-optical (EO) bunch profile monitor. The method of electro-optical spectral decoding (EOSD) uses the Pockels effect to modulate the longitudinal electron bunch profile onto a long, chirped laser pulse passing through an EO crystal. The laser pulse is then analyzed with a single-shot spectrometer and from the spectral modulation, the temporal modulation can be extracted. The setup has a sub-ps resolution (granularity) and can measure down to bunch lengths of 1.5 ps RMS for bunch charges as low as 30 pC. With this setup it is possible to study longitudinal beam dynamics (e. g. microbunching) occurring during ANKA's low-alpha-operation, an operation mode with compressed bunches to generate coherent synchrotron radiation in the THz range. In addition to measuring the longitudinal bunch profile, long-ranging wake-fields trailing the electron bunch can also be studied, revealing bunch-bunch interactions. PB - JACoW CP - Geneva, Switzerland SP - 1909 EP - 1911 KW - laser KW - wakefield KW - operation KW - electron KW - storage-ring DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-WEOBB02 UR - http://jacow.org/ipac2014/papers/weobb02.pdf ER -