The cosmic ray tagger of the short baseline neutrino experiment at Fermilab

The Short Baseline Neutrino (SBN) program at Fermilab will search for new physics in the neutrino oscillations parameters. The far detector will be interested by a ~25 kHz rate of cosmic ray events. An external cosmic ray tagging system will be implemented in order to prevent possible misidentification in the liquid argon time projection chamber. This thesis is focused on the activities performed on the top cosmic ray tagging modules of the SBN experiment. The front-end electronics and the data acquisition software were tested and debugged. The performance evaluation techniques were first developed on the prototype module in Bologna and then applied to the assembled modules at the Frascati National Laboratories.