Studies of the Global Muon Trigger Performance

The CMS L1 Global Muon Trigger combines the results of the three regional muon triggers to find the best four muon candidates in every bunch crossing. Its flexible hardware design consisting of Field Programmable Gate Arrays and memory-based Look-Up Tables allows the GMT algorithm to be adjusted for optimum performance according to the characteristics of the regional muon triggers. The entire Level-1 trigger chain has been simulated with the object-oriented ORCA4 simulation software. The presented study describes the performance of the regional Level-1 muon triggers and the optimization of the Global Muon Trigger algorithm using single muon and minimum bias samples. It is demonstrated that the GMT can achieve high efficiency in all regions of the detector, an extremely low number of ghosts and a trigger rate compatible with the projected L1 rates.