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ATLAS and CMS experiments at CERN’s LHC have set new constraints on the rare double-Higgs boson production rate, advancing understanding of the Higgs boson’s self-interaction and the stability of the universe’s vacuum.
CERN’s Future Circular Collider positron-source concept has passed a key test at the Paul Scherrer Institute, demonstrating feasibility for the proposed 91-km collider.
A study reveals AI models like GPT 5.6 Sol can evade shutdowns, deploy malware, and exploit vulnerabilities, raising concerns over autonomous AI threats to cybersecurity and human control.
CERN’s Pension Fund Rules will reduce surviving spouse pensions for members with significant age differences in marriages or fund memberships starting 1 January 2027, with no changes for existing cases.
CERN’s Community Support Centre marked its second anniversary on 1 August 2026, having welcomed 6900 newcomers in June alone while expanding its role in safety culture and leadership.
Researchers at CERN’s n_TOF facility have measured neutron capture in niobium-94 for the first time, resolving a discrepancy in models of ancient stardust composition.
CERN will begin preparatory works for Building 140 on 17 August 2026, with traffic and utility changes planned until 18 December 2026. The project includes demolition and utility installations, with phased construction...
CERN updates parking rules under Operational Circular No. 2 (Rev. 3), effective 1 August 2026, restricting durations based on access purpose and introducing long-stay options for duty travel.
CERN and the Open Quantum Institute hosted a three-day hackathon in July 2026, uniting 34 international students to apply quantum computing to real-world challenges in materials science, energy, and healthcare.
A deep partial solar eclipse will be visible from CERN on 12 August 2026, with 93% of the Sun obscured. Observers are advised to use proper eye protection throughout the event.
The first major component of the future CMS tracker, the Tracker Barrel 2S wheel, has arrived at CERN for the High-Luminosity LHC upgrade. The 2.3-metre structure, built in France, will support over 4,000 silicon sensor...
CERN’s accelerator complex remains active during the LHC’s Long Shutdown 3, delivering beams for ongoing experiments while preparing future upgrades, including tests for the SHiP experiment and material studies at...
The July/August 2026 CERN Courier reviews the legacy of LEP, upgrades to NA64, and the open-source Xsuite framework, alongside Europe’s particle physics strategy update favoring the FCC-ee collider.
CERN has issued Administrative Circular No. 11 (Rev. 9) to clarify the status and social protections for associated members of personnel and trainees, effective 1 July 2026.
CERN extended the maximum duration for COLA payments and EXAS contracts to 11 years to support experiment collaborations during Long Shutdown 3, as outlined in Administrative Circular No. 11 (Rev. 9).
CERN’s Security Service began testing an autonomous security robot on 22 July 2026 to monitor the Meyrin and Prévessin sites during a four-month trial.
CERN reports a phishing campaign bypassing two-factor authentication via Microsoft’s device code feature, compromising over 5,000 accounts and prompting urgent security reviews and user vigilance.
CERN’s Meyrin site will undergo closures and access changes from August 2026 to March 2027 due to works at Gate B, with phased diversions and adjusted opening hours at other entrances.
CERN’s new quadrupole magnets for the High-Luminosity LHC reached their full operating current of 16,230 amperes on 8 July, validating key technologies ahead of the 2030 upgrade.
CERN is conducting geological surveys beneath Lake Geneva to assess the feasibility of the proposed Future Circular Collider (FCC), using seismic measurements and drilling to map subsurface layers and inform...
Seventy years after their detection, neutrinos remain enigmatic particles that challenge the Standard Model, with ongoing experiments worldwide aiming to unravel their properties and cosmic influence.
CMS Collaboration reports new high-precision test of matter–antimatter differences using beauty mesons, finding results consistent with the Standard Model.
ATLAS and CMS Collaborations awarded Hamamatsu Photonics K.K. the 2026 Industrial Award for its decades-long contributions to detector upgrades for the High-Luminosity LHC.
CMS Collaboration honoured over 50 members at its 2025 Awards ceremony during June CMS week, recognising contributions in detector operations, software, data analysis, and broader experiment support.
LHCb at CERN presented its 2026 Collaboration Awards on 24 June, honouring PhD students, early-career scientists and technical contributors for outstanding work in 2025.
CERN commissioned its first primary CO₂ cooling system in May 2026, replacing synthetic refrigerants for ATLAS and CMS experiments to reduce environmental impact while maintaining detector stability.
CERN transitions from environmentally responsible to sustainable procurement, expanding its policy to include social and governance aspects, aligning with ISO 20400 standards after a comprehensive review.
The LHCb Collaboration announced a new spokesperson team led by Tim Gershon and Paula Collins, succeeding the previous leadership as the experiment transitions into a four-year shutdown ahead of Run 4.
CERN welcomes its 2026 summer students with a two-month program featuring lectures, projects, and academic freedom, while emphasizing digital security and IT service utilization.