superconducting magnets

Before scientists can put the Large Hadron Collider back to work this month solving the mysteries of particle physics, the LHC’s engineers face critical repairs to the $5-billion device. First up: Fix the 53 superconducting magnets trashed in September 2008 when a power cable broke, causing the magnets to warm above their –458˚F operating temperature and lose conductivity, or “quench.” Then pipes for helium coolant melted, further damaging the magnets.

Buried beneath the plains of Illinois is a monster of a machine designed to mince matter into its most fundamental parts. It's called a particle accelerator, and it relies on 1,000 giant superconducting magnets, 700 scientists and engineers, and more than $10 million in annual electricity bills to keep on running 24 hours a day, 7 days a week.