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TY - CONF AU - Zeng, L. AU - Ding, Y. AU - Huang, S. AU - Huang, Z. AU - Liu, K.X. AU - Qin, W. AU - Zhao, G. ED - Bishofberger, Kip:Carlsten, Bruce (LANL, Los Alamos, NM, USA)[ORCID:0000-0001-5619-907X] ED - Schaa, Volker RW TI - Hundred-Gigawatt X-Ray Self-Seeded High-Gain Harmonic Generation 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 - Self-seeded high-gain harmonic generation is a possible way to extend the wavelength of a soft x-ray free-electron laser (FEL). We have carried out simulation study on harmonic generation within the photon energy range from 2 keV to 4.5 keV, which is difficult to achieve due to a lack of monochromator materials. In this work, we demonstrate the third harmonic FEL with the fundamental wavelength at 1.52 nm. Our results shows that, by using undulator tapering technique, sub-terawatt narrow-bandwidth FEL output can be obtained. PB - JACoW CP - Geneva, Switzerland SP - 53 EP - 56 KW - ion KW - FEL KW - undulator KW - electron KW - radiation DA - 2018/02 PY - 2018 SN - 978-3-95450-179-3 DO - 10.18429/JACoW-FEL2017-MOP013 UR - http://jacow.org/fel2017/papers/mop013.pdf ER -