Kamioka Gravitational wave detector, Underground gravitational wave detector in Hida, Japan.
KAGRA is an underground observatory in the Kamioka mine featuring two perpendicular three-kilometer arms that work together to detect gravitational waves. The facility uses advanced laser technology to measure extremely small distortions in space caused by distant cosmic events.
The facility began detecting gravitational waves in 2020, becoming Asia's first such observatory of its kind. The decision to build it deep underground was driven by the need to protect sensitive equipment from external disturbances.
The detector represents Japan's role in global scientific collaboration, allowing researchers from multiple countries to work together on understanding the cosmos. Visitors can see how this international effort brings people together around shared questions about the universe.
The detector is located within an active mining area and is generally not accessible to casual visitors without special permission. Those interested in the science can contact the facility to ask about tour options or online information about the research being conducted there.
The mirrors in the detector are chilled to minus 250 degrees Celsius, a technique that greatly improves the precision of measurements. This extreme cooling is one of the features that sets this facility apart from other gravitational wave observatories around the world.
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