  The hadron collider studied in the Future Circular Collider (FCC) project
could operate with protons and lead ions in similar operation modes as the LHC.
In this paper the potential performances in lead-lead, proton-lead and
proton-proton collisions are investigated. Based on average lattice parameters,
the strengths of intra-beam scattering and radiation damping are evaluated and
their effect on the beam and luminosity evolution is presented. Estimates for
the integrated luminosity per fill and per run are given, depending on the
turnaround time. Moreover, the beam-beam tune shift and bound free pair
production losses in heavy-ion operation are addressed.
