ICARUS (Imaging Cosmic And Rare Underground Signals) is a physics experiment aimed at studying neutrinos.
After completion of its operations there, it was refurbished at CERN for re-use at Fermilab, in the same neutrino beam as the MiniBooNE, MicroBooNE and Short Baseline Near Detector (SBND) experiments.
[1] The ICARUS detector was then taken apart for transport and reassembled at Fermilab, where data collection is expected to begin in fall 2021.
After first runs at Pavia in 2001, the ICARUS T600 detector at Gran Sasso, filled with 760 tons of liquid argon, started operation in 2010.
Shortly afterwards, the ICARUS collaboration published a paper in which they argued that the energy distribution of the neutrinos is not compatible with superluminal particles.