The Cosmic Ray Tagger of the Short Baseline Neutrino program Far Detector at Fermilab

The Short Baseline Neutrino Program at Fermilab aims to discover, or definitely rule out, the existence of sterile neutrinos at the eV mass scale by means of Liquid Argon TPCs along the Booster Neutrino Beamline. In order to mitigate the background induced by cosmic muons, the Far Detector (ICARUST600) is instrumented with a 4π Cosmic Ray Tagger system. This paper focuses on the description of the cosmic ray tagger, its performance, its integration in the experiment and its role in the event reconstruction