Fine Structure

The Tevatron Collides Once Again

The tevatron is back online!

After a long shutdown to upgrade many of the tevatron's systems, the fine folks at Fermilab have once again started colliding beams of protons and anti-protons. According to the tevatron twitter account, initial collisions were seen in a cross-section of 63 inverse microbarns (10-34 meters) and 1650 inverse nanobarns (10-37 meters) - still much less than the femtobarn (10-43 meters) cross-section that the tevatron will eventually collide within. ]