Story perspectives

CERN Starts Three-Year LHC Shutdown, Targeting 380 Million Higgs

6/30/2026

Summary

Story summary

CERN shut down the Large Hadron Collider on June 29 2026 to start Long Shutdown 3.
LS3 will run through 2029, replace 1.2 km of magnets and upgrade ATLAS and CMS with new trigger systems.
The upgrades add all-silicon tracking, billions of channels, picosecond timing and megahertz calorimeters.
Scientists aim to collect data on 380 million Higgs bosons when High-Luminosity LHC starts in 2030 to explore dark matter and physics beyond the Standard Model.

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Story summary

CERN shut down the Large Hadron Collider on June 29 2026 to start Long Shutdown 3.
LS3 will run through 2029, replace 1.2 km of magnets and upgrade ATLAS and CMS with new trigger systems.
The upgrades add all-silicon tracking, billions of channels, picosecond timing and megahertz calorimeters.
Scientists aim to collect data on 380 million Higgs bosons when High-Luminosity LHC starts in 2030 to explore dark matter and physics beyond the Standard Model.