IceCube Detects Neutrinos (IMAGE)
Caption
IceCube’s 5,160 digital optical modules are suspended from 86 strings reaching a mile and a half below the surface at the South Pole. Each sphere contains a photomultiplier tube and electronics to capture the faint flashes of muons speeding through the ice, their direction and energy -- and thus that of the neutrinos that created them -- tracked by multiple detections. At lower left is the processed signal of an energetic muon moving upward through the array, created by a neutrino that traveled all the way through the Earth.
Credit
IceCube Collaboration and Lawrence Berkeley National Laboratory
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