Through Fermilab, the US Department of Energy’s Office of Science has contributed $23 million to magnet construction for the Compact Muon Solenoid detector. Weighing in at more than 13,000 tons, the Compact Muon Solenoid experiment’s magnet is built around a 20-foot-diameter, nearly 43-foot-long superconducting solenoid – a wire coil with multiple loops, which generates a magnetic field when electricity passes through it. The CMS solenoid generates a magnetic field of 4 Tesla, some 100,000 times stronger than the Earth’s magnetic field. (Image courtesy USCMS.)