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TY - CONF AU - Allaria, E. AU - Castronovo, D. AU - Cautero, M. AU - Cudin, I. AU - Danailov, M.B. AU - Diviacco, B. AU - Giannessi, L. AU - Veronese, M. AU - Zangrando, M. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - FERMI Configuration for the Echo Enabled Harmonic Generation Experiment J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - The FERMI FEL-2 undulator line, normally operated in the double stage high gain harmonic generation with the fresh bunch (HGHG-FB) has been temporary modified to allow operating the FEL in the Echo Enabled Harmonic Generation (EEHG) scheme. An increase of the dispersion in the delay-line was required together with a replacement of the second stage modulator allowing the electron beam to resonantly interact with a second seed laser. Another critical component of the EEHG setup is a new manipulator installed in the delay-line chicane and hosting additional diagnostic components. In this work we describe in some detail these new components that allowed a successful demonstration of the EEHG at harmonics as high as 101. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1752 EP - 1755 KW - laser KW - FEL KW - electron KW - experiment KW - photon DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-TUPRB031 UR - http://jacow.org/ipac2019/papers/tuprb031.pdf ER -