Sailing the high energies ⚡
These are the first high-energy collisions recorded by the #LHC experiments in 2026.
Representing particle collisions at an energy of 13.6 TeV, these event displays mark the beginning of the experiments’ data-taking season and the final #LHCRun3.
#BeamTime
It's time for physics! ⚛️
Stable particle beams returned to the Large Hadron Collider (LHC) at 15:58 CET on Saturday, 7 March, marking the start of the final run of #LHCRun3.
Hear from Chiara, an Accelerator Physicist, who offers insights into this year's run, the team's preparations for a new #physics season, and what lies ahead for the #LHC.
Stay tuned for part two to discover more about the LHC's future after #LHCRun3.
Ready, Set, Collide 💥
The Large Hadron Collider (#LHC) is gearing up to resume proton collisions. In this concluding physics run of #LHCRun3, proton beams will once again be delivered to the LHC experiments.
It’s the final countdown 🕕
In just a few weeks, CERN will power up the #LHC for the fifth and final physics run of the #LHCRun3. But what steps must we take before activating the machine?
Swipe to discover the five-step plan for waking up a particle collider.
After that, or even after the annual Year-End Technical Stop (YETS), the PS Booster is the first accelerator to be recommissioned, alongside Linac 4, before the beams reach the LHC.
In just a few days, the machines will be switched on again for the fifth and final run of #LHCRun3.
In a few weeks, the CCC will be bustling as the Large Hadron Collider awakens from its winter hibernation, ready for another data-taking season in #LHCRun3.
Find out more: home.cern/news/news/ac...
#BeamTime
The LHC’s 11th year-long run of high-energy physics – the fourth year of the #LHCRun3 – broke a new record for integrated luminosity by delivering 125 fb-1 to both the @atlasexperiment.bsky.social and the @cmsexperiment.bsky.social.
‘Tis the season of heavy ions
Last Friday at 3.40 pm, a new #HeavyIon run began at the Large Hadron Collider, the fourth of #LHCRun3.
Find out more about the primordial state of matter studied in heavy-ion collisions at the LHC: www.youtube.com/watch?v=mBfJ...
Earlier this month, on 5 May at 13h51, the engineer in charge of the Large Hadron Collider at the CERN Control Centre announced that stable beams had returned to the #LHC, marking the start of the 2025 #physics data-taking campaign in the fourth year of the #LHCRun3.
Habemus collisions 💥
These are the first high-energy collisions recorded by the #LHC experiments in 2025.
Representing particle collisions at an energy of 13.6 TeV, these event displays mark the beginning of the experiments’ data-taking season, the fourth of the #LHCRun3. #BeamTime
‘Tis the season of #physics 💫
“Stable" particle beams returned to the Large Hadron Collider at 13.51 CEST today, marking the start of the 2025 physics data-taking season, the fourth of the #LHCRun3.
Although it is practical, moving around in the LHC tunnel is not possible anymore, as right now it’s #BeamTime and the physics season is in full swing. #LHCRun3
Find out more: home.cern/news/news/ac...
What happens when we restart the LHC? 🤔
We asked our scientists Delphine and Samer to reveal what really happens when the world’s largest particle accelerator is getting ready to receive beam for its fourth season of #LHCRun3.
Protons were injected into the #LHC for the first time since November 2024, when the annual year-end technical stop (YETS) started. This is the fourth year of #LHCRun3, and the new data-taking season is about to begin.
Spring at CERN 🌸
As the flowers start to blossom and the days are getting sunnier, CERN prepares for #BeamTime at the Large Hadron Collider and the start of the fourth data-taking season of #LHCRun3.
Which physics topic would you like us to cover this season? Let us know in the comments. 👇
Spectacular views for visitors of @CMSExperiment.bsky.social
during annual maintenance and upgrade activities. Now getting ready to take data in the 4th year of #LHCRun3 . More information on cms.cern/news/what-do... .
Our spokesperson, Andreas Hoecker, tries to talk about the excitement of our new and successful collisions over the celebrations here in the room! 🎉 #restartedLHC #LHCRun3 @ATLASexperiment
Restart of the Large Hadron Collider Run-3 is beginning! 💫
Follow along live, now, at https://youtu.be/06kFq1QF5-s
#restartingLHC #LHCRun3
Getting ready for #restartingLHC at the @ATLASexperiment control room -- people are busy but expect it to be even busier tomorrow for #LHCRun3!
Checking in on @ATLASexperiment this lovely morning to make sure it's happy and ready for data-taking with #LHCRun3 starting next week!
Want to support @ATLASexperiment #LHCRun3? Check out our 'mission patches' available for download at https://atlas.cern/design#run3
On July 5th we'll be #RestartingLHC for physics studies at our highest collision energy yet! Keep an eye out for news and a live webcast on the day 🧐
In the meantime, you can follow the news so far for #LHCRun3 at https://atlas.cern/Resources/Run-3
We'll soon be collecting more data with #LHCRun3, but if you're interested to explore some of the data already recorded, check out our #OpenData resources at:
https://atlas.cern/Resources/Opendata
and
http://opendata.atlas.cern/
Exciting plans to come and keen for your wishlist! 🌠
Interested in what happened @ATLASexperiment during "Long Shutdown 2" when the detector was upgraded in preparation for #LHCRun3? 👷♀️👨🔬
Find out more here: https://atlas.cern/Discover/Detector/Long-Shutdown-2 #UpgradingLHC
