Experiment Briefing

ATLAS Experiment Briefing

Harnessing a supercomputer for ATLAS

ATLAS researchers are exploring the potential of High Performance Computing (HPC). HPC harnesses the power of purpose-built supercomputers constructed from specialised hardware, and is used widely in other scientific disciplines.

2 June 2022

ATLAS event selection system readies for LHC Run 3

The ATLAS trigger system operated extremely successfully during Run 1 (2009–2013) and Run 2 (2015–2018) of the LHC. It is now undergoing various upgrades in preparation for the upcoming Run-3 data-taking period, which will see a moderate increase in the rate of collisions inside the experiment.

28 February 2022

Upgraded ATLAS Liquid Argon Calorimeter ready for next LHC operation

The ATLAS Collaboration has completed the installation of “Phase-I” upgrades of the Liquid Argon Calorimeter (LAr). The upgrades improve the read-out speed of the calorimeter’s electronics and provide more efficient event-selection capabilities. These improvements will be pivotal for data-taking during the coming high-intensity runs of the LHC.

25 January 2022

Teaching established software new tricks

Following several years of development, ATLAS Collaboration has launched a new "multithreaded" release of its analysis software, Athena.

15 October 2021

The power of position: aligning the ATLAS muon spectrometer

In new results released this week, ATLAS physicists describe novel techniques used to accurately align the muon spectrometer.

4 March 2021

Keeping the ATLAS Inner Detector in perfect alignment

How do you track a particle’s trajectory when your detector keeps moving? What if you find slight biases in your detector’s measurements? These were the challenges faced by the ATLAS Inner Detector during Run 2 of the LHC (2015–2018). Located at the heart of the experiment, the Inner Detector provides efficient and precise measurements of charged-particle tracks. In a new paper released today, physicists describe the complex solutions they developed to align the Inner Detector, ensuring the continued accuracy of the experiment.

16 July 2020