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.

http://www.quantumdiaries.org/2009/09/16/the-tevatron-in-the-digital-age/ ]

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