BiPo: General facility intended for the measurement of the radio-purity of large surfaces dedicated to underground experiments, The Laboratorio Subter

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BiPo: General facility intended for the measurement of the radio-purity of large surfaces dedicated to underground experiments, The Laboratorio Subterraneo de Canfranc (LSC) has been excavated in the rock 800 m deep under the Mount Tobazo in the Spanish side of the Aragon Pyrenees. The rock filters the cosmic radiation providing the ""cosmic silence"", which is necessary to study rarely occurring natural phenomena such as the interactions with an atomic nucleus of neutrinos of cosmic origin or of particles of the invisible ""dark matter"". Dark matter provides 85% of the mass of the Universe, but we do not know what it is made of."", Canfranc, Huesca, Aragon, Spain, Europe

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