A parallel algorithm for fast reconstruction of primary vertices on heterogeneous architectures
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10052_2025_Article_14225.pdf
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1.99 MB
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Author(s)
Dziurda, Agnieszka
Giza, Maciej
Gligorov, Vladimir V.
Hulsbergen, Wouter
Kutsenko, Bogdan
Mariani, Saverio
Nolte, Niklas
Reiss, Florian
Spradlin, Patrick
vom Bruch, Dorothea
Date Issued
June 2, 2025
Journal
The European Physical Journal C
Publisher
Springer Berlin Heidelberg
Citation
Dziurda, A., Giza, M., Gligorov, V.V. et al. A parallel algorithm for fast reconstruction of primary vertices on heterogeneous architectures. Eur. Phys. J. C 85, 609 (2025).
Version
Final published version
Abstract
The physics programme of the LHCb experiment at the Large Hadron Collider requires an efficient and precise reconstruction of the particle collision vertices. The LHCb Upgrade detector relies on a fully software-based trigger with an online reconstruction rate of 30 MHz , necessitating fast vertex finding algorithms. This paper describes a new approach to vertex reconstruction developed for this purpose. The algorithm is based on cluster finding within a histogram of the particle trajectory projections along the beamline and on an adaptive vertex fit. Its implementations and optimisations on x86 and GPU architectures and its performance on simulated samples are also discussed.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-025-14225-7
