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TY - CONF AU - Ruprecht, M. AU - Goslawski, P. AU - Jankowiak, A. AU - Neumann, A. AU - Ries, M. AU - Weis, T. AU - Wüstefeld, G. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Influence of Transient Beam Loading on the Longitudinal Beam Dynamics at BESSY VSR J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - BESSY VSR, a scheme where 1.7 ps and 15 ps long bunches (rms) can be stored simultaneously in the BESSY II storage ring has recently been proposed *. The strong longitudinal bunch focusing is achieved by superconducting high gradient RF cavities. If the bunch fill pattern exhibits a significant inhomogeneity, e.g. due to gaps, transient beam loading causes a distortion of the longitudinal phase space which is different for each bunch. The result are variations along the fill pattern in synchronous phase, synchrotron frequency and bunch shape. This paper presents investigations of transient beam loading and depicts the consequences on bunch length, phase stability and longitudinal multi-bunch oscillations for the projected setup of BESSY VSR. PB - JACoW CP - Geneva, Switzerland SP - 141 EP - 143 KW - beam-loading KW - synchrotron KW - damping KW - simulation KW - cavity DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-MOPWA022 UR - http://jacow.org/ipac2015/papers/mopwa022.pdf ER -