China is planning the world's largest and most sensitive neutrino observatory. It's called TRIDENT, and will be built in the South China Sea.
Chinese researchers are working on a new neutrino observatory called TRIDENT. They built an underwater simulator to develop their plan. Image Credit: TRIDENT
Neutrinos—and there are three sub-types—were discovered in the early 20th century. They have no electrical charge and an infinitesimal mass. In fact, some physicists initially thought they were massless. Without a charge, they don’t interact with the electromagnetic force. They only interact through gravity and the weak nuclear force.
Most neutrino observatories are made of massive volumes of water or ice. The observatories consist of strings of linked detectors. Have a look at the IceCube Neutrino Observatory for an example. Volume is one key to successful neutrino detection. The larger the volume of water the observatory monitors, the higher the probability there is for it to detect rare neutrino interactions. TRIDENT will be the world’s largest neutrino detector, with a volume of about 7.5 kmDetector efficiency is another main consideration. TRIDENT will have unprecedented photon detection efficiency, and when combined with its large volume, it is truly a next-generation neutrino detector.
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