Optimisation of the Particle Detection Efficiency for Scintillation Detectors with SiPM Readout

The proposed upgrade of the LHC1 to SLHC2, planned for the period after about 10 years of LHC operation at design parameters and an integrated luminosity of about 500 fb−1, will increase the peak luminosity of the collider by a factor of 10 to 1035 cm−2s−1. To keep the amounts of data, resulting especially from the increased muon rates at these lumi- nosities, manageable, a new 2D detector component for the CMS detector has been suggested, the Muon Track fast Tag. This thesis presents studies of a scintillator-based, two-dimensional muon detector fulfilling the requirements of an MTT. The studies base upon a Geant4 simulation of light production and propagation inside a plastic scintillator. For the readout of the optical photons, the properties of small semiconducting photo detectors, called SiPMs3, are simulated in detail. The results of these studies show that the chosen materials and geometries of the setup promise a good signal-to-noise ratio and a readout timing that allows coping with the event rates of the SLHC environment. Additionally a construction according to the specifications of the simulation is presented. This setup is read out by Silicon Photomultipliers, in analogy to the setups in the simulations.