High Luminosity Large Hadron Collider
The High Luminosity Large Hadron Collider (HL-LHC; formerly referred to as HiLumi LHC, Super LHC, and SLHC) is an upgrade to the Large Hadron Collider, operated by the European Organization for Nuclear Research (CERN), located at the French-Swiss border near Geneva. From 2011 to 2020, the project was led by Lucio Rossi.
Source: Wikipedia — High Luminosity Large Hadron Collider (CC BY-SA 4.0)