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TY - UNPB AU - Dommach, M. ED - Casas, Joan ED - Schaa, Volker RW ED - Costa, Isidre ED - López, David ED - Prieto, Montserrat TI - The European XFEL Photon Beam Transport System J2 - Proc. of MEDSI2016, Barcelona, Spain, 11-16 September 2016 CY - Barcelona, Spain T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation Conference T3 - 9 LA - english AB - European XFEL, the fourth generation Free-Electron-Laser facility in Hamburg (Germany), is going to start user operation in early 2017. In full operation the novel facility will produce at MHz repetition rate coherent femtosecond pulses with unprecedented brilliance in the energy range from 250 eV to 25 keV. The facility comprises of a linear accelerator and three beam-lines: SASE1 and SASE2 that operate in the hard X-ray regime and SASE3 that covers the soft X-ray range up to 3 keV. The installation of the windowless 800-meter long ultra-high vacuum beam transport system of the SASE1 beam-line is almost completed and the assembly of the SASE3 beam-line is ongoing. Challenges of the installation are the implementation of a particle-free assembly of the vacuum system around x-ray mirrors and avoiding particle transport through the beam pipe. The control and interlock system is a custom build Programmable Logic Controller (PLC) to detect a fault vacuum condition and to prevent damage to the beam-line hardware. The poster will report about the installation status and provides an overview of the control system as well as the interlock concepts. PB - JACoW Publishing CP - Geneva, Switzerland ER -