LHC Run 3

43 results

ATLAS sets record limits on Higgs boson’s self-interaction

The result is based on over 300 inverse femtobarns of proton–proton collision data, which is equivalent to 30 000 trillion collisions

News
Physics
22 April, 2026

Accelerator Report: Excellent performance at the LHC

The LHC has successfully reached the nominal performance required for Run 3, marking an important milestone in the 2026 physics programme. It has now entered a special run with a reduced number of collisions per bunch crossing

News
Accelerators
15 April, 2026

Accelerator Report: HiLumi LHC beam reliability runs pave the way to the future

Dedicated HiLumi LHC beam test runs are currently taking place in the LHC injectors – a crucial step to guarantee that the HiLumi LHC can operate at peak performance from the very start of physics running, in 2030

News
Accelerators
26 March, 2026

Accelerator Report: The 2026 run will be short but intense

Every day counts, so the LHC operations teams have mapped out a precise sequence of running phases to maximise the physics output during the machine’s final months

News
Accelerators
12 March, 2026

Final laps at the LHC

The final physics season at the LHC has just kicked off! The experiments will record collisions until the end of June, when work will begin on transforming the machine into a high-luminosity accelerator.

News
Accelerators
07 March, 2026
Accelerators
News
07 March, 2026

Accelerator Report: Protons are heading towards the LHC

Many activities are currently progressing across the accelerator chain as the complex moves steadily towards full operation

News
Accelerators
25 February, 2026
Accelerators
News
25 February, 2026

Accelerator Report: The accelerator complex is gradually waking up from the winter shutdown

Beam commissioning is progressing well in CERN’s accelerator complex, with beams already at the gates of the SPS

News
Accelerators
12 February, 2026
Accelerators
News
12 February, 2026

Accelerator Report: Run 3 operations counting down to LS3

Linac4 and the PS Booster have already completed their standalone beam commissioning successfully and have handed over the baton to the PS

News
Accelerators
29 January, 2026
Accelerators
News
29 January, 2026

Accelerator Report: A strong finish and a swift transition into the winter break

The 2025 run was successfully completed on 8 December at 6.00 a.m., signalling the start of the year-end technical stop for the LHC and the injector complex

News
Accelerators
12 December, 2025
Accelerators
News
12 December, 2025

Accelerator Report: The final countdown

With only three weeks left until CERN’s annual closure, the end of the 2025 run is approaching fast. In less than two weeks, all the beams throughout the accelerator complex will be stopped

News
Accelerators
28 November, 2025
Accelerators
News
28 November, 2025

Accelerator Report: 2025 is another record-breaking year for protons in the LHC

The 2025 LHC proton run has come to a close, with record performance delivered to all experiments. The LHC now gears up for the upcoming lead-ion run

News
Accelerators
12 November, 2025
Accelerators
News
12 November, 2025

And they’re off! The 2025 LHC physics season gets underway

“Stable" particle beams are back in the LHC machine, marking the start of the 2025 physics data-taking campaign

News
Accelerators
05 May, 2025