FLUKA cross sections for cosmic-ray interactions with the DRAGON2 code

Secondary particles produced in spallation reactions of cosmic rays with the interstellar gas provide valuable information that allow us to investigate injection and transport charged Galaxy. A good understanding cross sections production these is crucial correctly interpret our models, although existing experimental data very scarce uncertain. We have developed a new set sections, both inelastic inclusive, computed {\tt FLUKA} Monte Carlo nuclear code tested its compatibility CR data. Inelastic inclusive been compared most up-to-date parameterisations finding general agreement. Then, implemented DRAGON2} characterize spectra nuclei up $Z=26$ secondary-to-primary ratios B, Be Li. Interestingly, we find FLUKA predict an energy-dependence Li flux which compatible AMS-02 reproduce simultaneously scaling lower than $20\%$. Finally, implement gamma rays, calculated FLUKA}, Gammasky} compute diffuse gamma-ray sky maps local HI emissivity spectrum, agreement Fermi Large Area Telescope