On the design of a 10 TeV γγ collider.

High energy γγ collider is a natural extension to the proposed 10 TeV wakefield-based energy frontier lepton collider. It is realized through the photon generation via the Compton scattering of multi-TeV lepton beams at moderate intensity lasers just before the interaction point. It can either be based on the electron-positron or electron-electron architecture, offering additional options for the study of high energy physics phenomena. We show that a number of laser parameters, including the wavelength, duration, and intensity, play a crucial role in meeting the luminosity requirements for the design of a 10 TeV γγ collider.