APS News

Large Hadron Collider (LHC) Makes History

Proton Beams Complete Circuit

The dots in this image represent the proton beam making its first trip around the Large Hadron Collider. The lower left dot is the injected beam beginning its 27 kilometer trip. The upper right dot is the same beam as it returns to the injection point. The fact that both dots appear in the same image is confirmation that the protons made it all the way around.

proton beam making its first trip around the Large Hadron Collider
Photo courtesy CERN

 

Large Hadron Collider in Geneva, Switzerland
By Maximilien Brice/CERN

Large Hadron Collider in Geneva, Switzerland