Tag: ATLAS
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Efficiency meets environmental responsibility: commissioning CERN’s primary CO₂ cooling circuit
The ATLAS and CMS detectors require ultra-low, stable temperatures to protect their sensitive electronics. Traditional cooling systems rely on synthetic refrigerants like hydrofluorocarbons (HFCs), which, while effective, have a global warming potential thousands of times greater than CO₂. Seeking a sustainable alternative, CERN has turned to CO₂ itself – a natural refrigerant with a far
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Final collisions, new horizons
In the early hours of Sunday, 14 June, the experiments at the Large Hadron Collider (LHC) had their last hurrah. In the control rooms of ALICE, ATLAS, CMS and LHCb – the four major experiments at the accelerator – scientists watched the final collisions burst across their screens like colourful fireworks. The collisions for physics
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ATLAS observes new composite particle
Physicists from the ATLAS Collaboration reported the first observation of a new particle.
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Cloudy with a chance of muons
When you want to capture an important moment in your life, you often take a photo. You could write down the key details instead – who you were with, where you were, the time of day – but this information might not be as impactful as a picture of the event. Physicists like to record
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Supporting early careers beyond CERN
The CERN Alumni Network aims to provide those who have left the Laboratory with a means of keeping in touch with CERN and with each other. This mission begins at CERN, as the network supports soon-to-be alumni in their transition. Each year, many people transition beyond CERN, often into industry – a move that presents
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Smarter decisions at the speed of physics
Smart and fast decision making is key when dealing with the onslaught of collisions at the LHC. At the High-Luminosity LHC (HiLumi LHC), the ATLAS and CMS experiments are expected to process detector data at rates corresponding to roughly a quarter of the 2025 global internet traffic. All in real time, as part of the
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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
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ATLAS acts as a cosmic-ray laboratory
The ATLAS Collaboration reports its first measurement of proton–oxygen collisions at the LHC, which recreate cosmic-ray interactions with Earth’s atmosphere
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ATLAS sets strong limits on supersymmetry
Using machine-learning techniques, the ATLAS Collaboration has searched deep for signs of particles that could help answer some of the greatest mysteries of physics
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ATLAS 2025 Thesis Awards spotlight the “soul” of the Collaboration
On 19 February 2026, the ATLAS Collaboration gathered for the 2025 Thesis Awards – an annual celebration of the vital role of PhD students within the experiment