The physics goals of a Muon Collider (MC) can only be achieved with appropriate, self-consistent designs of the ring, interaction region (IR), high-field superconducting magnets, machine-detector interface (MDI) and detector. Recent results from realistically-implemented simulation studies are presented here for a 1.5-TeV MC. It is shown that if the IR and MDI are designed with appropriate shielding, background rates are significantly suppressed in the MC detector. The main characteristics of these backgrounds are also presented.
