Speaker
Description
In LHC Run 3, ALICE is reading out 600 times more proton–proton collisions than in Run 2, generating a data stream exceeding 30 GB/s—the largest among LHC experiments. This leap is enabled by major upgrades to both the detector systems and data processing infrastructure.
The full stream is continuously compressed, written to disk, and processed through calibration and reconstruction pipelines. A flexible asynchronous software trigger selects events for analysis, enabling highly efficient data reduction.
In 2024 and 2025, ALICE collected over 100 pb⁻¹ of data, retaining just 17 PB from about 400 PB of raw input. Remarkably, the full trigger chain, including final physics reconstruction, is completed within few weeks from the data taking, making datasets promptly available for analysis and allowing numerous physics results to be presented at conferences shortly after the collection of the data.
This talk will highlight ALICE’s upgraded processing chain, focusing on the asynchronous software trigger, and demonstrate how these innovations maximize physics output in Runs 3.
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