Choudhury, S (2021) Performance of the High-Level Trigger System at CMS in LHC Run-2. In: IEEE Transactions on Nuclear Science, 68 (8). pp. 2035-2042.
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Abstract
The CMS experiment at the LHC selects events with a two-level trigger system, the Level-1 (L1) trigger, and the high-level trigger (HLT). The HLT reduces the rate from 100 to about 1 kHz and has access to the full detector readout and runs a streamlined version of the offline event reconstruction. During LHC Run-2, the peak instantaneous luminosity reached values up to 2.0× 10³⁴ cm-2s-1, posing a challenge to the online event selection. An overview of the HLT system at CMS, the online physics object reconstruction, and the main triggers using those physics objects in 2016-2018 proton collision data-taking period is presented. The performance of a representative set of physics triggers is also discussed. © 1963-2012 IEEE.
Item Type: | Journal Article |
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Publication: | IEEE Transactions on Nuclear Science |
Publisher: | Institute of Electrical and Electronics Engineers Inc. |
Additional Information: | The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc. |
Keywords: | Electrical engineering; Nuclear energy, Detector readout; Event reconstruction; High-level triggers; Object reconstruction; Offline; Online event selection; Proton collisions; Trigger systems, Trigger circuits |
Department/Centre: | Division of Physical & Mathematical Sciences > Centre for High Energy Physics |
Date Deposited: | 20 Nov 2021 11:30 |
Last Modified: | 20 Nov 2021 11:30 |
URI: | http://eprints.iisc.ac.in/id/eprint/69839 |
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