Dresden 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
BE: Beschleunigerphysik
BE 7: Synchrotron Radiation I
BE 7.2: Vortrag
Mittwoch, 2. April 2014, 10:00–10:15, MOL 213
Analysis of Coupled Bunch Instabilities in BESSYVSR — •Martin Ruprecht1, Paul Goslawski1, Andreas Jankowiak1, Markus Ries1, Godehard Wüstefeld1, and Thomas Weis2 — 1Helmholtz-Zentrum Berlin, Germany — 2Technische Universität Dortmund, Germany
BESSYVSR, a scheme where 1.5 ps and 15 ps long bunches (rms) can be stored simultaneously in the BESSY II storage ring has recently been proposed [1]. The strong longitudinal bunch focusing is achieved by superconducting high gradient RF cavities. This paper presents investigations of coupled bunch instabilities driven by higher order modes (HOMs) of superconducting multi cell cavities in BESSYVSR. Analytical calculations and tracking simulations in time domain are performed in the longitudinal and the transverse planes and factors that influence the threshold currents are being discussed. Possible candidates of suitable cavity designs are investigated.
[1] G. Wüstefeld, A. Jankowiak, J. Knobloch, M. Ries, Simultaneous Long and Short Electron Bunches in the BESSY II Storage Ring, Proceedings of IPAC2011, San Sebastián, Spain