Soudan 2

Soudan 2 is a neutrino detector located at the Soudan Underground Laboratory in Minnesota, USA. It was originally constructed as a continuation of the work in the field of particle physics aimed at detecting neutrinos, which are extremely light and elusive subatomic particles. Soudan 2 began full operations in the late 1980s and was designed to study neutrinos produced by cosmic rays and by the Sun.