• O. Ferrando, E. Karantzoulis
  ELETTRA, Basovizza

A beam dump transfer line (Main Beam Dump TL) has been designed to transport the electrons from each FERMI radiator to the beam dump. The line matches the e-beam optics from the end of the undulator chains of FEL1 and FEL2 for all photon wavelengths and polarizations required by the FERMI project. The transfer line is also equipped with different types of instrumentation to characterize the beam in terms of emittance, energy spread and jitter of the electron bunches and so demands a flexible optics interchangeable between measurements and normal operations. The line may also accommodate a coherent infrared source with particular requirements on the optics. The beam optics, the line design, and the various operating modes will be presented and discussed.