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TY - UNPB AU - Tanaka, H. ED - Schaa, Volker R.W. ED - Decking, Winfried ED - Sinn, Harald ED - Geloni, Gianluca ED - Schreiber, Siegfried ED - Marx, Michaela TI - Operation Status and Future Perspective of Warm XFEL J2 - Proc. of FEL2019, Hamburg, Germany, 26-30 August 2019 CY - Hamburg, Germany T2 - Free Electron Laser Conference T3 - 39 LA - english AB - The world first XFEL facility, LCLS adopted a warm (normal conducting) S-band RF technology to constantly provide high quality electron beams with high energy for generating stable SASE-based XFELs. Following the success of LCLS, SACLA, PAL-XFEL and SwissFEL based on the warm RF technologies of S- or C-bands were constructed and have started their user operations or test experiments via the beam-commissioning phase. These warm XFEL facilities have developed various advanced FEL schemes making high performance XFELs available for user experiments. They have been continuously upgrading the operations for expanding experimental opportunities and potentiality. This talk will overview the current operational status of warm XFEL facilities and present future perspectives compared with cold (super-conducting) XFEL facilities. PB - JACoW Publishing CP - Geneva, Switzerland ER -