Studying the high x frontier with A Fixed-Target ExpeRiment at the LHC

Contributed to the XXI International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2013, 22-26 April 2013, Marseille, France, to appear in PoS http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=191, 6 pages, 2 figuresInternational audienceThe opportunities which are offered by a next generation and multi-purpose fixed-target experiment exploiting the proton and lead LHC beams extracted by a bent crystal are outlined. In particular, such an experiment can greatly complement facilities with lepton beams by unraveling the partonic structure of polarised and unpolarised nucleons and of nuclei, especially at large momentum fractions