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  Schnizer, P.; Ries, M.; Anders, W.; Bergmann, Y.; Ehmler, H.; Goslawski, P.; Jankowiak, A.; Knobloch, J.; Neumann, A.; Ott, K.; Schälicke, A.; Vélez, A.: Status of the BESSY VSR Project. In: Shane Koscielniak ... [Ed.] : IPAC2018 : Proceedings of the 9th International Particle Accelerator Conference, Vancouver, BC, CanadaGeneve: JACoW, 2018. - ISBN 978-3-95450-184-7, p. THPMF038/1-

Open Access Version

Abstract:
BESSY VSR is set out to provide a variable pulse pattern to the BESSY II users. This project is now fully funded and heading into its implementation phase. The pulse pattern, consisting of long and short pulses, require inserting cavities providing a 3rd and a 3.5th harmonic of the fundamental harmonic of the ring. Therefore 1.5 and 1.75 GHz cavities are developed with appropriate higher order mode damping spectrum. Similarly the BESSY II ring and injector chain has to be upgraded to provide appropriate diagnostics and increase the injection eiciency. In this paper we give the current status of the project and give an overview of scientiĄc challenges currently being tackled.