|
abstract:
|
We review the status of FEL source activity of the
ongoing SPARC FEL experiment, developed within the
framework of a collaboration among ENEA, CNR, INFN,
INFM, Sincrotrone Trieste and University of Rome Tor
Vergata. The project is aimed at realising a SASE-FEL
source, operating in the visible (around 500 nm), with an
extended range of tunability down to the VUV (100 nm)
by the use of the mechanism of non-linear harmonic
generation. The development of the relevant activities
foresees the realisation of an advanced 150 MeV photo-
injector source, aimed at producing a high brightness
electron beams, needed to drive a SASE-FEL experiment,
and a 14 m long undulator. We present the status of the
design and construction of SPARC FEL device. In
particular we discuss the choice of the project parameters,
their optimisation and the sensitivity of the SPARC
performance to any parameter variation. We will show,
using start-to-end simulations, what is the impact of the e-
beam and of the undulator parameters on the
characteristics of the output laser field and in particular on
the amount of the non-linearly generated power at higher
harmonics.
|