High energy beam-beam effects in CLIC

In order to achieve high luminosity, the Compact Linear Collider (CLIC) has to be operated in the high beamstrahlung regime at centre-of-mass energies in the few TeV range. Beam-beam effIects for this case are simulated. The dependence of luminosity, luminosity spectrum and background conditions on the different beam parameters is investigated. In particular the effect of beam size, waist shift and offsets are considered; as well as the background due to beamstrahlung and secondary electro-magnetic and hadronic processes.