Heavy-Ions at the High-Luminosity LHC

The heavy-ion programme at the LHC after the Long Shutdown 2 (LS2) will profit from a signifi- cant increase in the total integrated luminosity in Pb–Pb collisions, with more than 10 nb − 1 having been requested by the experiments, compared to ∼ 0 . 1 nb − 1 collected in Run-1 and the expected ∼ 1 nb − 1 of Run-2. The four major LHC experiments (ALICE, ATLAS, CMS and LHCb) are developing specific upgrade strategies, aiming to exploit the full potential of the LHC heavy-ion programme after LS2. The most relevant aspects of these upgrade programmes are revised in this contribution, together with some selected items from the foreseen physics programme.