T2K SuperK
22 Feb 2011
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50,000 tons of pure water surrounded and 11,200 photomultiplier tubes form the massive Super-Kamiokande (link opens in a new window) detector, measuring 41.4 m high and 39.3 m across. The huge structure is then wrapped by outer detectors which not only identify cosmic muons but actually help in their reconstruction.

Super-Kamiokande started collecting data in 1996 and has since made many important measurements. These include precision measurement of the solar neutrino flux using the elastic scattering interaction, the first very strong evidence for neutrino oscillations, and a considerably more stringent limit on proton decay.

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