FERMI FEL operation in Echo Enabled Harmonic Generation mode
by
DrGiuseppe Penco(Sincrotrone Trieste)
→
Europe/Zurich
Description
The FERMI FEL routinely operates in High Gain Harmonic Generation mode, providing fully coherent pulses from the extreme ultraviolet (EUV) to the soft x-ray.
However the FERMI layout is very suitable to test a novel FEL mode, named echo-enabled harmonic generation (EEHG), where two external seed lasers are used to precisely control the spectro-temporal properties of the FEL pulse. This scheme, already demonstrated in the EUV, promises an improvement in the FEL stability and a minor sensitivity to the microbunching instabilities. With a small modification of the FERMI FEL-2 line, the EEHG mode has been experimentally proved at FERMI, generating for the first time intense pulses in the soft x-ray.
An outlook of the main results obtained at FERMI and a comparison with the nominal performance of FERMI in HGHG mode is given in this talk.
For more details contact Simona Bettoni, ext. 3706
