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The time of flight system serves as an anti – coincidence protect and data particle velocity. The GAPS detector will use layers of lithium – doped silicon Si(Li) detectors surrounded by time of flight plastic Super dad superman logo shirt scintillators. If these particle pairs appear some distance from the foil, that can indicate that an unseen particle just like the dark – matter photon was created first, then flew a sure distance before decaying into the electron – positron pair.
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