  The ELIMED (MEDical and multidisciplinary application at ELI Beamlines) beam
line is being developed at INFN-LNS with the aim of transporting and selecting
in energy proton and ion beams accelerated by laser-matter interaction at ELI
Beamlines in Prague. It will be a section of the ELIMAIA (ELI Multidisciplinary
Applications of laser-Ions Acceleration) beam line, dedicated to applications,
including the medical one, of laser-accelerated ion beams [1,2]. A Monte Carlo
model has been developed to support the design of the beam line in terms of
particle transport efficiency, to optimize the transport parameters at the
irradiation point in air and, furthermore, to predict beam parameters in order
to deliver dose distributions of clinical relevance. The application has been
developed using the Geant4 [3] Monte Carlo toolkit and has been designed in a
modular way in order to easily switch on/off geometrical components according
to different experimental setups and users requirements, as reported in [4],
describing the early-stage code and simulations. The application has been
delivered to ELI Beamlines and will be available for future ELIMAIA's users as
ready-to-use tool useful during experiment preparation and analysis. The final
version of the developed application will be described in detail in this
contribution, together with the final results, in terms of energy spectra and
transmission efficiency along the in-vacuum beam line, obtained by performing
end-to-end simulations.
