ArgoNeuT found that only about two out of every 1,000,000,000,000 neutrinos passing through the 90 cm long detector interacted to produce a muon, the electron’s heavier cousin. The experiment, located just upstream of the MINOS near detector, collected the first thousands of neutrino and anti-neutrino events ever with a LArTPC in a low energy neutrino beam. A LArTPC provides a richly detailed image of a neutrino event by collecting the ionization tracks of particles created in the interaction.ĪrgoNeuT ran in the NuMI beamline at Fermilab from September 2009 to February 2010. But how often do neutrinos actually hit the “silly ball”? And, what exactly happens when a neutrino does interact? A number of Fermilab-based experiments, including the ArgoNeuT liquid argon time projection chamber (LArTPC) detector, are seeking answers to these questions. “The Earth is just a silly ball / To them, through which they simply pass,” wrote John Updike in 1960. The neutrino almost never interacts with matter. Stalin, urging him to approve the project and assuring him of safety.The ArgoNeuT liquid argon time projection chamber’s (LArTPC) neutrino cross section measurements are depicted here in terms of the muon momentum (top) and angle (bottom). Scientists, scientific officials, particle physicists, and Nobel laureates have written to Tamil Nadu CM M.K. This will create problems like rock bust and roof collapse”.
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