The tank is lined with roughly 11,000 to 13,000 Photomultiplier Tubes (PMTs) .

Contains over 11,000 20-inch PMTs that monitor the main water volume.

When a neutrino interacts with water, it can produce a charged particle moving faster than the speed of light in water. This creates Cherenkov light , a faint blue flash detected by the PMTs. Scientific Achievements

The detector is a feat of engineering located 1,000 meters (3,300 feet) underground to shield it from cosmic radiation.

A cylindrical stainless steel tank measuring approximately 39.3 meters in diameter and 41.4 meters in height . Medium: It contains 50,000 tons of ultra-pure water .