ISSN - 09205632, Nuclear Physics B - Proceedings Supplements, 2000, vol. 82, p. 359-366
Status of gamma-gamma and gamma-electron colliders
This report on Photon Colliders briefly reviews three main issues: physics motivation, possible parameters and technical feasibility, plans of works and international cooperation. New scheme of laser optics at the interaction region is described which can drastically (at least by one order) reduce the cost of the laser system.