LHCb Fixed Target Results and Prospects

LHCb has the unique capability to study collisions of the LHC beams on fixed targets. Internal gas targets of He, Ne and Ar have been used so far to collect samples corresponding to integrated luminosities up to 0.1 $\mathrm pb^{-1}$. An upgraded target, allowing a wider choice of target gas species and to increase the gas density by up to two orders of magnitude, is going to be installed for the LHC Run 3. Results and prospects on open and hidden charm productions are presented, which can provide crucial constraints on cold nuclear-matter effects and nPDF at large x. These measurements, together with production of $\bar{p}$ and other light hadrons, are of great interest to cosmic-ray physics as well.