ATLAS celebrates its 25th anniversary

Discover the history of the Collaboration and join the celebration.

ATLAS will turn 25 on 1 October 2017, a quarter-century after the submission of its letter of intent to the LHC Experiments Committee in 1992.

The approval of the ATLAS Experiment was an important milestone in the history of particle physics - but it was just the first step in a long journey. Making ATLAS a reality required years of innovative developments in technology and physics. Learn the history of its development in the timeline above.

ATLAS is celebrating this exciting milestone with a dedicated ATLAS25 year. During this year all institutes, members and the public are welcome to:

  • Discover the history of the ATLAS Experiment.
  • Explore the technological and scientific achievements of the ATLAS Collaboration, including the 2012 discovery of the Higgs boson.
  • Look ahead to the ATLAS Collaboration’s exciting future prospects, as it prepares for a new era of discovery with the HL-LHC.
ATLAS25 will hold events and activities, beginning with an ATLAS Live social media event on 2 October 2017. Follow ATLAS on Facebook and Twitter to find out more!