Muon Flux Measurements at the Davis Campus of the Sanford Underground Research Facility with the Majorana Demonstrator Veto System

We report the first measurement of the total muon flux underground at the Davis Campus of the Sanford Underground Research Facility at the 4850  ft level. Measurements were performed using the Majorana Demonstrator muon veto system arranged in two different configurations. The measured total flux is (5.31 + 0.17) X 10^-9 μ/s/cm².