Versatile $e^{+}{e}^{-}/\gamma \gamma /ep$ facilities at a Future Circular Collider

Radoje Belusevic

This note describes two versatile accelerator complexes that could be built at a Future Circular Collider (FCC) in order to produce $e^{+}{e}^{-}$, $\gamma \gamma$ and $ep$ collisions. The firs…