Improving the Eta-Assignment of the DTBX Based First Level Regional Muon Trigger

In its current state, the Muon Trigger Track Finder in the bending plane achieves a coarse eta-resolution, derived from the position where the muon crossed detector wheel boundaries. In this paper, an improvement of the eta-assignment is discussed: by using the theta - Super Layer of the muon stations, tracks are found standalone in the z-projection and matched to the tracks found in the bending plane. Moreover, the output format of the theta - Trigger Server is described and impacts of the missing theta - Super Layer in station MB4 are shown.