| CMS Note | |
| Report number | CMS-CR-2023-209 |
| Title | Performance of track reconstruction at the CMS high-level trigger in 2022 data |
| Author(s) | Pena Rodriguez, Karla Josefina (Hamburg U.) |
| Publication | 2023 |
| Collaboration | CMS Collaboration |
| Imprint | 19 Oct 2023 |
| Number of pages | 6 |
| Published in: | PoS EPS-HEP2023 (2024) 592 |
| Presented at | 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023, pp.592 |
| DOI | 10.22323/1.449.0592 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN LHC ; CMS |
| Keywords | Trigger |
| Abstract | The CMS detector has undergone extensive improvements in preparation for Run 3 of the LHC to operate efficiently at the increased luminosity and pileup. This includes the installation of a refurbished innermost pixel detector layer, as well as the development of HLT software to make use of heterogeneous computing architectures. In Run 3, track reconstruction in the HLT is based on a single iteration seeded by pixel tracks reconstructed by the Patatrack algorithm, which can be offloaded to GPUs. The HLT track reconstruction performance has been measured in pp collision data recorded at a center-of-mass energy of $ \sqrt{s} = $ 13.6 TeV in 2022, in particular during periods with detector condition changes expected to have a significant impact on HLT track reconstruction. The HLT tracking efficiency and fake rate with respect to offline track reconstruction, as well as the impact parameters of tracks reconstructed in the HLT, are presented. |
| Other source | INSPIRE |
Record created 2023-11-20, last modified 2024-06-04