FERMI NATIONAL ACCELERATOR LABORATORY / SCIENCE PHOTO LIBRARY FERMI NATIONAL ACCELERATOR LABORATORY / SCIENCE PHOTO LIBRARY
The 2 km diameter tunnel of the main accelerator at the Fermi National Accelerator Laboratory (Fermilab) in Illinois is buried underground, but is marked by a service road on the surface. The Tevatron, as it is known, is designed to acceler- ate protons up to 1000 GeV (1 TeV). In 1985, it was modified to operate as a collider, with protons circling in one direction, antiprotons in the other direction. The main laboratory buildings are to the left of the ring, dominated by the high-rise administration building. The land within the ring has been restored to natural prairie by volunteers. Chicago lies in the distance at top.
Model release not required. Property release not required.