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TY - CONF AU - Schnizer, P. AU - Anders, W. AU - Bergmann, Y. AU - Goslawski, P. AU - Hartmut, H. AU - Jankowiak, A. AU - Knobloch, J. AU - Neumann, A. AU - Ott, K. AU - Ries, M. AU - Schälicke, A. AU - Vélez, A.V. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Status of the BESSY VSR Project J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - 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 efficiency. In this paper we give the current status of the project and give an overview of scientific challenges currently being tackled. PB - JACoW Publishing CP - Geneva, Switzerland SP - 4138 EP - 4141 KW - cavity KW - vacuum KW - operation KW - SRF KW - electron DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-THPMF038 UR - http://jacow.org/ipac2018/papers/thpmf038.pdf ER -