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FERMI (acronym for Free Electron laser Radiation for Multidisciplinary Investigations) is the seeded free electron laser (FEL) facility in operation for external users next to the third-generation synchrotron radiation facility Elettra. Unique among the FEL sources currently operating in the ultraviolet and soft x-ray range worldwide, FERMI has been developed to provide fully coherent ultrashort (10-100 femtosecond) pulses with a peak brightness ten billion times higher than that made available by third-generation light sources. FERMI opens unique opportunities for exploring the structure and transient states of condensed matter, soft matter and low-density matter using a variety of diffraction, scattering and spectroscopy techniques.

Interazione FEL-materia
Manipolazione dello spettro della luce nell'ultravioletto estremo
Impulsi ultracorti
Caratterizzazione di impulsi al femtosecondo nell’XUV
Dinamica di sistemi magnetici
Reticoli per magnetizzazione nanoscopica
Fotocatalisi plasmonica
Trasferimenti di carica in fotocatalizzatori ibridi semiconduttori plasmonici

FERMI Beamlines and Photon diagnostics

After the undulators the photon beam travels through a diagnostics section and the transport to reach the beamline endstations.


Free electron laser source

A linear accelerator is used to generate a relativistic electron beam that can be injected into each of two separate FEL lines, configured as single- and double-harmonic-cascade setups. An external laser is used to seed each of these lines.

Machine status

Current status of the machine (electron and photon beam)

Photon beam parameters

Photon beam parameters of FERMI FEL-1 and FEL-2


People and areas of FERMI (FOCUS project)

Call for proposals

Here information about calls


Papers published.
FERMI Publications

Ultima modifica il Venerdì, 30 Aprile 2021 12:15