Software Performance of the ATLAS Track Reconstruction for LHC Run 3
No Thumbnail Available
Date
2024-12
Profesor/a GuÃa
Facultad/escuela
Idioma
en
Journal Title
Journal ISSN
Volume Title
Publisher
Computing and Software for Big Science, Volume 8, Issue 1December 2024 Article number 9
Nombre de Curso
item.page.dc.rights
Attribution 4.0 International
CC BY 4.0
Deed
item.page.dc.rights
https://creativecommons.org/licenses/by/4.0/
Abstract
Charged particle reconstruction in the presence of many simultaneous proton–proton (pp) collisions in the LHC is a challenging task for the ATLAS experiment’s reconstruction software due to the combinatorial complexity. This paper describes the major changes made to adapt the software to reconstruct high-activity collisions with an average of 50 or more simultaneous pp interactions per bunch crossing (pile-up) promptly using the available computing resources. The performance of the key components of the track reconstruction chain and its dependence on pile-up are evaluated, and the improvement achieved compared to the previous software version is quantified. For events with an average of 60pp collisions per bunch crossing, the updated track reconstruction is twice as fast as the previous version, without significant reduction in reconstruction efficiency and while reducing the rate of combinatorial fake tracks by more than a factor two. © The Author(s) 2024.
item.page.dc.description
Indexación: Scopus.
TEXTO COMPLETO EN INGLÉS
TEXTO COMPLETO EN INGLÉS
Keywords
software de reconstrucción, reconstruction chain, average of 60pp, simultaneous pp
Citation
DOI
10.1007/s41781-023-00111-y