2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/199025Muon Colliders have unique technical and physics advantages and disadvantages when compared with both hadrons and electron machines. They should be regarded as complementary. Parameters are given of a 4 TeV high luminosity muon-muon collider, and of a 0.5 TeV demonstration machine. We discuss the various systems in such muon collider.LaTeX 5 pages 4 figuresAccelerator Physicstext