Photography: Super-Kamiokande neutrino observatory

Super-Kamiokande neutrino observatory - thumbnails

This photo gallery contains some incredible pictures of the Super-Kamiokande neutrino observatory, under Mount Kamioka in Japan.

The observatory consists of a vast underground chamber in the shape of a cylinder, filled with 11 million gallons (50,000 tons) of extremely pure water. The inside of the chamber is covered with 11,146 photomultiplier tubes (extremely sensitive light-detectors). When a neutrino passes through the chamber and hits a water molecule, a flash of light is produced, which is recorded by the photomultiplier tubes.

Photo No.15 is particularly eye-catching, showing two technicians in an inflatable boat, checking the photomultiplier tubes while the chamber is being filled with water.

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