Instrumentation and Detectors2026-01-171 minarXiv:2601.11858expressCalibrating a Dark Matter DetectorTwo kilometers underground, beneath the Canadian rock, sits a tank filled with three tonnes of liquid argon. The argon is chilled to minus 186 degrees Celsius and is as clear as water.Ludovico LuzziAlan GuthAlbert EinsteinBarry BarishLIGOdark matter👍👎☆SimplePopularAdvanced