Author: Glass, H.G.
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WEPOW007 Status and Prospects of the BESSY II Injector System 2826
 
  • T. Atkinson, W. Anders, P. Goslawski, A. Jankowiak, F. Kramer, P. Kuske, D. Malyutin, A.N. Matveenko, A. Neumann, M. Ries, M. Ruprecht, A. Schälicke, T. Schneegans, D. Schüler, P.I. Volz, G. Wüstefeld
    HZB, Berlin, Germany
  • H.G. Glass
    BESSY GmbH, Berlin, Germany
 
  The BESSY II injector system consists of a 50 MeV Linac, installed in preparation for TopUp operation, and a 10 Hz fast-ramping booster synchrotron. The system provides injection efficiencies into the BESSY II storage ring well above 90 % . This contribution reports on the present status, measurements of energy acceptance and other essential beam parameters as well as studies on coupled-bunch-by-bunch instability. Requirements for BESSY-VSR and possible upgrade scenarios are discussed.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW007  
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WEPOW011 BESSY II Supports an Extensive Suite of Timing Experiments 2840
 
  • R. Müller, T. Birke, F. Falkenstern, K. Holldack, P. Kuske, A. Schälicke, D. Schüler
    HZB, Berlin, Germany
  • H.G. Glass, R. Ovsyannikov
    BESSY GmbH, Berlin, Germany
 
  The synchrotron light source facility BESSY II has put top-up and a fast orbit feedback (FOFB) into operation in 2013. Both operational improvements have matured and turned out to be especially beneficial for the advanced timing opportunities supported at BESSY. In combination with very tight injection efficiency requirements a thorough understanding of top-up injections under all operational conditions has been developed. Consequently arbitrary bunch currents can be dialed in and maintained on demand. In standard mode, a very pure camshaft bunch is available both in general for laser pump/X-ray probe and for pseudo single bunch experiments at the MHz chopper beamline. 3 constant high current bunches support the FEMTOSPEX slicing facility. An additional bunch can be resonantly excited and pulse picked via custom orbit bumps at 3 different undulator beamlines (PPRE). Due to the FOFB the classical timing modes "single bunch" and "low alpha" feature an attractive pointing stability.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW011  
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