Review of Linear Collider Beam-beam Interaction*

Three major effects from the interaction of e+ebeams disruption, beamstrahlung, and electron-positron pair creation are reviewed. For the disruption effects we discuss the luminosity enhancement factor, the maximum and rm$ disruption angles: and the “kink instability . All the results are obtained from computer simulations. Scaling laws for the numerical results and theoretical explanations of the computer aquired phenomena are offered whereever possible. For the beamstrahlung effects we concentrate only on the final electron energ\ spectrum resulting from multiple photon radiation process. and the deflection angle associated with low energy particles. For the effects from electron-positron pair creation, both coherent and incoherent processes of beamstrahlung pair creation are discussed. In addition to the estimation on total number of such pairs. we also look into the energy spectrum and the deflection angle.