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Kamioka Observatory and KAGRA Observatory in Mt. Ikenoyama

Some ICRR experimental facilities are located underground.
- Super-Kamiokande, the world’s largest underground neutrino detector
- XMASS, aiming to directly detect dark matter
- KAGRA, large-scale cryogenic gravitational wave telescope

Super-Kamiokande

Uncover mysteries of the universe and elementary particles

- The world’s largest underground neutrino detector
- Water tank, about 40m in height and diameter
- 11,129 "eyes" to observe neutrino interactions

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XMASS

Aim at directly detecting dark matter

- Search for the nature of dark matter at 1000m underground
- Detector with liquid Xenon at -100℃
- 642 "eyes" to observe lights
- Photomultiplier Tubes with hexagonal glass surfaces

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KAGRA

"Ears" that catch wave "melodies" from the universe with very low temperature mirrors

- 200m underground to utilize low seismic environment
- L-shape 3km tunnel "arms"
- Colorless transparent sapphire mirror cooled at -253℃

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For more, check out the links below

Super-Kamiokande XMASS KAGRA