Status and analysis perspectives of ICARUS at the Fermilab Short Baseline Neutrino program

After a successful three-year physics run underground at the LNGS in Italy and a significant detector overhaul at CERN, the ICARUS-T600 detector was installed at Fermilab. In 2020, the cryogenic commissioning began with detector cool down, liquid argon filling and recirculation. ICARUS then started its operation collecting the first neutrino events from the Booster Neutrino Beam (BNB) and the Neutrinos at the Main Injector (NuMI) beam off-axis, which were used to test the ICARUS event selection, reconstruction and analysis algorithms. ICARUS successfully completed its commissioning phase in June 2022, and started data taking for neutrino oscillation physics, aiming at first to either confirm or refute the claim by Neutrino-4 short-baseline reactor experiment. ICARUS will also perform measurements of neutrino cross-sections with the NuMI beam and several Beyond Standard Model searches. After the first year of operations, ICARUS will jointly search for evidence of sterile neutrinos with the Short-Baseline Near Detector (SBND), within the Fermilab Short-Baseline Neutrino (SBN) program. In this paper, preliminary technical results from the ICARUS data with the BNB and NuMI beams are presented to highlight the performance of all ICARUS subsystems and its capability to select and reconstruct neutrino events.