A simulation study is made to investigate the effect of the detector material to the muon detector. The position resolution required for the muon tracking device is found to be about 1 cm.
The detector technology is still to be determined, We have currently three possible candidates for the muon tracking device; single-cell drift chambers, resistive plate chambers, and thin gap chambers. The technology will be determined by further simulation studies, together with experiences obtained at B-factories and LHC.