The Super-Kamiokande is a submerged neutrino (cosmic ray) detector located in Mount Kamiokakō in Japan, 1000 meters underground in an old mineshaft. The enormous apparatus is primarily used for detecting supernovas and cosmic rays. Originally constructed in 1993, the detector allowed researchers to detect proton decay, a feature which previous detectors lacked. The Super-Kamiokande is 15 times larger than its predecessor, giving it unchallenged accuracy at the time.
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