Where is the world’s largest superconducting magnet located?

The Large Hadron Collider relies on some of the largest superconducting magnets ever built, and these are located at CERN near Geneva. The collider’s main dipole magnets are 15 metres long and are cooled to about 1.9 kelvin, colder than outer space, so they can guide proton beams around the ring. Superconducting magnets are essential because they can carry huge electric currents without resistance. This allows physicists to bend and focus particles traveling at nearly the speed of light.