• E. Allaria
  ELETTRA, Basovizza
• X. Dao
  SLAC, Menlo Park, California
• G. De Ninno
  University of Nova Gorica, Nova Gorica

Recently, the second FEL line of the FERMI FEL has been modified in order to extend its tuning range down to 3 nm. In order to reach such a short wavelength starting from the UV seed laser the FERMI FEL-2 system relies on a double cascade of high gain harmonic generation. In this work we study the possibility of using the present FEL-2 layout with minor modifications to demonstrate the feasibility of the recently proposed echo-enabled harmonic generation (EEHG). The final aim is to cover the expected spectral range of FEL-2 with a single cascade. The performance of the EEHG in FERMI FEL-2 is estimated by means of start-to-end FEL simulations.