All the works presented in this thesis are part of the DarkSide project. DarkSide is an experiment for the direct search of dark matter, based on a dual phase argon time projection chamber. In particular, the future DarkSide-20k detector will be described below, the latest results of the DarkSide-50 prototype will be presented and ample space will be devoted to the ReD project. ReD-Recoil Directionality has the aim to investigate the directionality sensitivity in liquid argon, in the energy range of interest for the dark matter search. The basic idea is to irradiate a small dual-phase argon TPC with neutrons produced at the Tandem accelerator at the Laboratori Nazionali del Sud, in Catania. The scattered neutrons are then tagged by a neutron spectrometer that allows to reconstruct the scattering angle with respect to the TPC dirft field direction
