Super-Kamiokande
The world's largest underground neutrino observatory; a joint Japanese-American facility, it is located in the Kamioka Mine, about 200 km north of Tokyo. It consists of a tank of ultra-pure water, 40 meters in diameter by 40 meters tall, that is monitored by thousands of sensitive phototubes. Super-Kamiokande was badly damaged in November 2001 when a large number of the phototubes imploded in a chain reaction. However, repairs were carried out following an inquiry into the accident and the observatory resumed collecting data in January 2003.
Related category
• OBSERVATORIES AND TELESCOPES
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