The largest magnet in the world, located at CERN in Switzerland, weighs 12,500 tonnes. Scientists in India plan to build one weighing 50,000 tonnes in order to do neutrino research:
Neutrinos will interact with the iron – which will be layered in sheets – and spew out charged particles, whose paths will be bent by the iron’s magnetic field. About 30,000 detectors sandwiched between the sheets of iron will track these charged particles, providing information about the incident neutrinos.
INO will initially study atmospheric neutrinos, which are produced when cosmic rays smash into the upper atmosphere.
Unlike most neutrino detectors, such as the Super-Kamiokande in Japan or the Sudbury Neutrino Observatory in Canada, INO will be sensitive to both neutrinos and anti-neutrinos, which interact with matter in different ways.
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