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Hyper-Kamiokande is a neutrino observatory being constructed on the site of the Kamioka Observatory, near Kamioka, Japan.

This project started in 2010 as a successor to Super-Kamiokande. It was ranked as among the 28 top priority projects of the Japanese government. Thirteen countries from three continents are involved in this program.[1]

Construction was given final approval on 13 December 2019[2] and is scheduled to start in April 2020.[3] The beginning of data-taking is planned for 2027.[4]

Hyper-Kamiokande will have a tank with a billion litres of ultrapure water (UPW), 20 times larger than the tank for Super-Kamiokande. This increased capacity will be accompanied by a proportional growth in the number of sensors. The tank for Hyper-Kamiokande will be a double cylinder 2 × 250 meters long, always approximately 40 × 40 meters, and buried 650 meters deep[5] to reduce interference from cosmic radiation. Among the scientific objectives will be the search for proton decays.[2]


Di Lodovico, Francesca (2017). "The Hyper-Kamiokande Experiment". Journal of Physics: Conference Series. 888 (1): 012020. Bibcode:2017JPhCS.888a2020D. doi:10.1088/1742-6596/888/1/012020.
Normile, D (2015). "Particle physics. Japanese neutrino physicists think really big". Science. 347 (6222): 598. doi:10.1126/science.347.6222.598. PMID 25657225.


Normile 2015.
Castelvecchi, Davide (2019). "Japan will build the world's largest neutrino detector". Nature. doi:10.1038/d41586-019-03874-w.
"Hyper-Kamiokande Experiment to Begin Construction in April 2020 | HyperKamiokande".
"The Hyper-Kamiokande project is officially approved". 12 February 2020.

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