Sudbury Neutrino Observatory, Underground neutrino detector in Sudbury, Canada
The Sudbury Neutrino Observatory is a research facility located 2100 meters underground in a working mine, equipped with a tank filled with heavy water. The detector was specially designed to observe and measure tiny particles that travel from the sun through the earth.
The project began in the mid-1980s as an idea between scientists from different countries, and construction took place inside an existing working mine. The collaboration involved researchers from Canada, the United States, and the United Kingdom working together over many years.
The facility gained worldwide recognition when its director received a major physics prize in 2015 for discoveries made here. This honor reflects how the work conducted underground has reshaped our understanding of particle science globally.
The deep underground location shields sensitive equipment from cosmic interference that would ruin measurements. Access to the facility is limited since it remains an active research site with strict safety and security protocols.
The detector catches approximately one neutrino per hour, yet billions of these particles pass through the earth every second without leaving a trace. This extreme rarity demonstrates how ghost-like these particles truly are.
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