The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Kostin, D. AU - Eschke, J. AU - Jensch, K. AU - Krupka, N. AU - Reschke, D. AU - Saegebarth, S. AU - Schaffran, J. AU - Schalwat, M. AU - Schilling, P. AU - Schmökel, M. AU - Sievers, S. AU - Steinhau-Kühl, N. AU - Vogel, E. AU - Weise, H. AU - Wiencek, M. AU - van der Horst, B. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - European XFEL: Accelerating Module Repair at DESY J2 - Proc. of SRF2019, Dresden, Germany, 30 June-05 July 2019 CY - Dresden, Germany T2 - International Conference on RF Superconductivity T3 - 19 LA - english AB - The European XFEL is in operation since 2017. The design projected energy of 17.5 GeV was reached, even with the last 4 main linac accelerating modules not yet installed. 2 out of 4 not installed modules did suffer from strong cavity performance degradation, namely increased field emission, and required surface processing. The first of two modules is reassembled and tested. The module test results confirm a successful repair action. The module repair and test steps are described together with cavities performance evolution. PB - JACoW Publishing CP - Geneva, Switzerland SP - 127 EP - 130 KW - cavity KW - FEL KW - linac KW - SRF KW - operation DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-MOP034 UR - http://jacow.org/srf2019/papers/mop034.pdf ER -