Thesis defense of Valerie Vanessa Knodel

Semiconductor detectors have lang been used in high-energy particle physics. Due to continuous improvements of experiments, more efficient sensors are required. The characterisation of different sensors is presented in this thesis in order to estimate the quality of the delivered sensors. This study supports the decision to select the final manufacturers. Both investigated manufacturers are qualified to produce sensors for the ATLAS experiment.
Knowledge of silicon sensors is also useful for medical applications. In this thesis, fast silicon sensors are characterised to be useful for a time-of-flight system in order to measure the energy of traversing particles. For this purpose, the time resolution of different sensors is systematically investigated at the TU Dortmund University and new analysis methods are developed. Finally, the design and construction of a prototype is presented as well as first measurements under real conditions in the proton beam of a treatment facility.