Probing non-perturbative QCD physics with the Magnet Station detector at the LHCb experiment.

Several non-perturbative QCD techniques are required to describe parton and hadron behavior in hot and cold nuclear medium at the small coupling scales. Validation with data is strongly required to progress in the field. However, high-energy experiments tipically priotirize hard scattering processes which produce high-p_T particles. The Magnet Station is a particle tracker proposed for the LHCb experiment to precisely measure the momentum of soft particles in the pseudorapidity range 2<η<4.5 which cannot cross the dipole magnet of the experiment. The detector will enable tracking of electrons coming from photon conversions, soft particles from rare particles producing many decay products, photoproduction of hadrons in ultra-peripheral heavy ion collisions, and particles composing the bulk medium produced at the forward rapidity. This presentation will describe the physics this detector will enable, such as the exploration of gluon saturation; search for tetraquarks, pentaquarks and gluoeballs in heavy ion collisions; explore particles which lost energy when crossing hot and cold medium and others.