Underground physics: Searching for neutrinos in deep places

A new physics experiment combines thousands of tons of steel plates, a powerful particle accelerator and 450 miles of solid rock to reveal the secrets of a particle that sometimes seems to barely exist.
Researchers in Argonne's High Energy Physics Division were instrumental in getting the experiment, called the Main Injector Neutrino Oscillation Search (MINOS), launched in the late 1980s, and later designed and built many of the detector components. By providing the first precise measurements of some of the most fundamental properties of neutrinos, MINOS physicists expect to shed new light on the role these particles played in shaping the universe.

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