The future circular collider study

At the end of 2018, a large worldwide collaboration, withcontributors from more than 350 institutes completed theconceptual design of the Future Circular Collider (FCC),a∼100 km accelerator infrastructure linked to the existingCERN complex, that would open up the way to the post-LHC era in particle physics. We present an overview of thetwo main accelerator options considered in the design study,namely the lepton collider (FCC-ee), serving as highest-luminosity Higgs and electroweak factory, and the 100-TeVenergy-frontier hadron collider (FCC-hh), along with theongoing technological R&D efforts and the planned nextsteps. A recently approved EU co-funded project, the FCCInnovation Study (FCCIS), will refine the design of the lep-ton collider and prepare the actual implementation of theFCC, in collaboration with European and global partners,and with the local authorities.