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TY - CONF AU - Höner, M. AU - Hilbrich, S. AU - Huck, H. AU - Huck, M. AU - Khan, S. AU - Mai, C. AU - Meyer auf der Heide, A. AU - Molo, R. AU - Rast, H. AU - Sommer, M. AU - Ungelenk, P. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Investigation of Beam Instabilities at DELTA using Bunch-by-bunch Feedback Systems J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - At the 1.5-GeV electron storage ring DELTA operated by the TU Dortmund University as a synchrotron radiation user facility, bunch-by-bunch feedback systems are in use for electron beam diagnostics and for the suppression of multibunch instabilities. An automatic readout of bunch position data allows a real-time modal analysis during machine operation. An excitation of particular multibunch modes enables the determination of growth and damping times for all modes independently. Further investigations of beam stability and natural damping times of all modes even below the instability threshold have been performed. In addition, first bunch-by-bunch data taken from the booster synchrotron are shown. PB - JACoW CP - Geneva, Switzerland SP - 3486 EP - 3488 KW - feedback KW - synchrotron KW - damping KW - storage-ring KW - booster DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-THPME104 UR - http://jacow.org/ipac2014/papers/thpme104.pdf ER -