The Muon Spectrometer is optimized for the detection of heavy quark resonances, such as J/Ψ, Ψ', Υ΄, Υ΄΄ via their decay to μ+μ-, that provide an essential tool to study the early and hot stage of heavy-ion collisions. The Muon Tracking Chambers detect the muons produced in the forward region. The chambers are located before and after the Muon Magnet which bends the trajectories of high momentum muons. The Muon Filter is an additional absorber to suppress left over hadrons. Finally the Muon Trigger signals the passage of the muons.