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TY - CONF AU - Allaria, E. AU - Badano, L. AU - De Ninno, G. AU - Di Mitri, S. AU - Diviacco, B. AU - Fawley, W.M. AU - Ferrari, E. AU - Garzella, D. AU - Grattoni, V. AU - Hemsing, E. AU - Mirian, N.S. AU - Penco, G. AU - Pop, M.A. AU - Prat, E. AU - Rebernik Ribič, P. AU - Roussel, E. AU - Spampinati, S. AU - Spezzani, C. AU - Trovò, M. AU - Xiang, D. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Amplified Emission of a Soft-X Ray Free-Electron Laser Based on Echo-Enabled Harmonic Generation J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - We report the first evidence of substantial gain in a soft-X ray Free Electron Laser (FEL) based on Echo-Enabled Harmonic Generation (EEHG). The experiment was focused on harmonics 36 (~7.3nm) and 45 (5.8 nm) and clearly demonstrated the expected EEHG capability of generating powerful and coherent FEL pulses, with strongly reduced sensitivity to electron-beam fluctuations. The experiment was carried out at FERMI, the seeded FEL user facility at Elettra-Sincrotrone Trieste. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2230 EP - 2232 KW - FEL KW - laser KW - electron KW - experiment KW - free-electron-laser DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-WEXXPLM1 UR - http://jacow.org/ipac2019/papers/wexxplm1.pdf ER -