Hadron Collider starts up again after two-year upgrade

The world’s largest particle smasher restarts Sunday after a two-year upgrade that will allow physicists to explore uncharted corners of the matter that makes up the universe.

“After two years of intense maintenance and several months of preparation for restart, the Large Hadron Collider, the most powerful particle accelerator in the world, is back in operation,” the European Organization for Nuclear Research (CERN) says.

Experiments at the collider have been seeking to unlock clues as to how the universe came into existence by studying fundamental particles, the building blocks of all matter, and the forces that control them.

— AFP

A Picture taken on February 10, 2015 shows workers in front of the CMS (Compact Muon Solenoid) Cavern at the European Organization for Nuclear Research (CERN) in Meyrin, near Geneva. The world's biggest particle collider was back in operation on April 5, 2015 after a two-year upgrade. (Photo credit: Richard Juilliart/AFP)
A picture taken on February 10, 2015 shows workers in front of the CMS (Compact Muon Solenoid) Cavern at the European Organization for Nuclear Research (CERN) in Meyrin, near Geneva. The world’s biggest particle collider was back in operation on April 5, 2015 after a two-year upgrade. (Photo credit: Richard Juilliart/AFP)

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