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TY - CONF AU - Wu, J. AU - Brachmann, A. AU - Fang, K. AU - Kang, H.-S. AU - Kim, G. AU - Marinelli, A. AU - Nam, I.H. AU - Pellegrini, C. AU - Raubenheimer, T.O. AU - Tsai, C.-Y. AU - Yang, B. AU - Yang, C. AU - Yoon, M. AU - Zhou, G. ED - Bishofberger, Kip:Carlsten, Bruce (LANL, Los Alamos, NM, USA)[ORCID:0000-0001-5619-907X] ED - Schaa, Volker RW TI - Slippage-Enhanced SASE FEL J2 - Proc. of FEL2017, Santa Fe, NM, USA, August 20-25, 2017 C1 - Santa Fe, NM, USA T2 - International Free Electron Laser Conference T3 - 38 LA - english AB - High-brightness XFEL is demanding for many users, in particular for certain types of imaging applications. Seeded FELs including self-seeding XFELs were successfully demonstrated. Alternative approaches by enhancing slippage between the x-ray pulse and the electron bunch were also demonstrated. This class of Slippage-enhanced SASE (SeSASE) schemes can be unique for FEL spectral range between 1.5 keV to 4 keV where neither grating-based soft x-ray self-seeding nor crystal-based hard x-ray self-seeding can easily access. SeSASE can provide high-brightness XFEL for high repetition rate machines not suffering from heat load on the crystal monochromator. We report start-to-end simulation results for LCLS-II project and PAL-XFEL project with study on tolerance. Performance comparison between SaSASE FEL and self-seeding FEL in the overlapping frequency range is also presented. PB - JACoW CP - Geneva, Switzerland SP - 348 EP - 351 KW - ion KW - FEL KW - undulator KW - electron KW - laser DA - 2018/02 PY - 2018 SN - 978-3-95450-179-3 DO - 10.18429/JACoW-FEL2017-TUP058 UR - http://jacow.org/fel2017/papers/tup058.pdf ER -