An Interaction Region for Gamma-Gamma and Gamma-Electron Collisions at TESLA/SBLC

TL;DR

This paper discusses the design and potential physics opportunities of a second interaction region at TESLA/SBLC linear colliders for gamma-gamma and gamma-electron collisions, including technical requirements and collision schemes.

Contribution

It presents a conceptual design for a second interaction region enabling high-energy gamma-gamma and gamma-electron collisions at TESLA/SBLC.

Findings

Feasible collision schemes for gg and ge at TESLA/SBLC

Estimated luminosities comparable to e+e- collisions

Identified laser and optics requirements for implementation

Abstract

Linear colliders offer unique opportunities to study gamma-gamma (gg), gamma-electron (ge) interactions. Using the laser backscattering method one can obtain gg, ge colliding beams with an energy and luminosity comparable to that in e+e- collisions. This work is a part of the Conceptual Design of TESLA/SBLC linear colliders describing a second interaction region for gg, ge collisions. We consider here possible physics in high energy gg, ge collisions, e -> g conversion, requirements to lasers, collision schemes, attainable luminosities, backgrounds, possible lasers, optics at the interaction region and other associated problems.