Indian Neutrino Lab to Boast World’s Biggest Magnet
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A major neutrino observatory set to be built in India cleared a major hurdle this week, when the Ministry of Environment and Forests formally approved the project.
The $250 million underground laboratory, called the Indian Neutrino Observatory (INO), will be built in the Bodi West Hills Reserved Forest in the state of Tamil Nadu.
The hills there rise very steeply, so workers will have to tunnel only about 2 kilometres horizontally to provide the laboratory with about 1300 metres of high-quality granite cover above. The rock cover is needed to shield the neutrino detector from particles called muons that form when cosmic rays hit the atmosphere.
INO will be made of 50,000 tonnes of magnetised iron, dwarfing the 12,500-tonne magnet in the Compact Muon Solenoid detector at CERN in Geneva, Switzerland. “It’ll be the most massive magnet [ever built],” says team member M. V. N. Murthy of the Institute of Mathematical Sciences in Chennai, Tamil Nadu.
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