Trigger Algorithms for Alignment and Calibration at CMS during LHC Run 3
Year: 2026
Type: conference-paper
Abstract: During LHC Run 3, the CMS experiment faces challenging pileup and high event rate conditions. To efficiently select events of interest, CMS utilizes a two-tiered triggering system. This system consists of the hardware-based level-1 trigger (L1T) and the software-based high-level trigger (HLT) that runs on a computing farm. The L1T utilizes coarse calorimeter and muon detector information, while at the HLT, a streamlined event reconstruction using the complete detector information is performed. A critical asset of the experiment is the rapid derivation of alignment and calibration constants for both the HLT and offline reconstruction. To achieve this, a dedicated set of triggers is integrated into the data-taking process. This contribution outlines the CMS alignment and calibration workflows and the interplay between these dedicated triggers and the derivation of calibrations.
DOI: 10.22323/1.485.0557
Author: Philipp Nattland
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7126044074
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