Measurement of secondary cosmic rays at the SAS Juan Carlos I

ORCA is an experiment installed at the Spanish Antarctic Station Juan Carlos I, which measures the flux of secondary cosmic rays continuously and in real time. It is composed of three sets of sensors dedicated mainly to the observation of neutrons and muons. In addition to the neutron and muon flux, it measures the direction of muon incidence, allowing the analysis of anisotropies that may appear in the primary cosmic rays that produce muons in their interaction with the atmosphere. ORCA is in nominal operation since March 2020