Tag: ATLAS
ATLAS is one of two general-purpose detectors at the Large Hadron Collider (LHC). It investigates a wide range of physics, from the search for the Higgs boson to extra dimensions and particles that could make up dark matter. The articles below relate to the ATLAS experiment.
-
CERN-made HiLumi LHC quadrupoles ready for installation
After years of design, manufacturing and testing, the High-Luminosity (HiLumi) LHC magnet programme has reached a landmark point: all eight new CERN-made quadrupole magnets needed for installation are ready for the tunnel (with two spares produced and entering their final stages). Known as the new inner triplets, these magnets are now complete and have been fully
-
Outstanding achievements of ATLAS Collaboration members celebrated at CERN
Great physics relies on great teamwork. The ATLAS Collaboration brings together over 6000 scientists, engineers and other professionals from around the world, drawing on their wealth of experience to keep the experiment running and drive new discoveries. Since 2014, the ATLAS Outstanding Achievement Awards have celebrated contributions made outside the context of a physics analysis,
-
A ringing success for the ATLAS Inner Tracker Pixel System
-
Strong evidence for quantum entanglement between Z bosons found by ATLAS and CMS
Quantum entanglement is certainly one of the stranger concepts to have emerged from the melting pot of 20th-century physics. Many great physicists, including Einstein, struggled to accept that the phenomenon could be real but, for decades now, the number of examples demonstrating it has been increasing. And, recently, the ATLAS and CMS Collaborations have added to these results by
-
ATLAS and CMS narrow in on double-Higgs production
Finding one Higgs boson was hard enough, but physicists at the Large Hadron Collider (LHC) are hunting for something even more elusive: pairs of Higgs bosons. At the recent International Conference on High Energy Physics 2026, the ATLAS and CMS Collaborations presented new constraints on the double-Higgs production rate, providing insight into how the Higgs
-
Oxygen collisions at the LHC show new indications of extreme state of matter
One year on from the first-ever collisions of oxygen at the Large Hadron Collider (LHC), the main LHC Collaborations – ALICE, ATLAS, CMS and LHCb – have each reported signs of the state of matter known as quark–gluon plasma (QGP) originating from these collisions. QGP is a state of matter that forms under intense pressure
-
ATLAS and CMS recognise longstanding industrial partner Hamamatsu Photonics K.K.
With this award, the ATLAS and CMS Collaborations recognise the crucial role Hamamatsu Photonics K.K. has played in the development and production of advanced technologies, as well as the ongoing, deeply rooted partnership that has been established with both experiments over many years. Through this close collaboration, Hamamatsu Photonics has made exceptional contributions to the
-
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
-
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
-
ATLAS observes new composite particle
Physicists from the ATLAS Collaboration reported the first observation of a new particle.