The LHCb upgrade represents a major change of the experiment. The detectors have been almost completely renewed to allow running at an instantaneous luminosity five times larger than that of the previous running periods. Readout of all detectors into an all-software trigger is central to the new design, facilitating the reconstruction of events at the maximum LHC interaction rate, and their selection in real time. The experiment's tracking system has been completely upgraded with a new pixel vertex detector, a silicon tracker upstream of the dipole magnet and three scintillating fibre tracking stations downstream of the magnet. The whole photon detection system of the RICH detectors has been renewed and the readout electronics of the calorimeter and muon systems have been fully overhauled. The first stage of the all-software trigger is implemented on a GPU farm. The output of the trigger provides a combination of totally reconstructed physics objects, such as tracks and vertices, ready for final analysis, and of entire events which need further offline reprocessing. This scheme required a complete revision of the computing model and rewriting of the experiment's software.

Ayres Rocha, D., Baptista de Souza Leite, J., Bediaga, I., Cruz Torres, M., De Freitas Carneiro Da Graca, U., De Miranda, J., et al. (2024). The LHCb Upgrade I. JOURNAL OF INSTRUMENTATION, 19(5) [10.1088/1748-0221/19/05/P05065].

The LHCb Upgrade I

Borsato M.;Petruzzo M.;Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Garcia Pardinas J.;Gotti C.;Martinelli M.;Matteuzzi C.;Meloni S.;Minotti A.;Pessina G.;Pizzichemi M.;Shields E. B.;Salomoni M.;Kirsebom V. S.;
2024

Abstract

The LHCb upgrade represents a major change of the experiment. The detectors have been almost completely renewed to allow running at an instantaneous luminosity five times larger than that of the previous running periods. Readout of all detectors into an all-software trigger is central to the new design, facilitating the reconstruction of events at the maximum LHC interaction rate, and their selection in real time. The experiment's tracking system has been completely upgraded with a new pixel vertex detector, a silicon tracker upstream of the dipole magnet and three scintillating fibre tracking stations downstream of the magnet. The whole photon detection system of the RICH detectors has been renewed and the readout electronics of the calorimeter and muon systems have been fully overhauled. The first stage of the all-software trigger is implemented on a GPU farm. The output of the trigger provides a combination of totally reconstructed physics objects, such as tracks and vertices, ready for final analysis, and of entire events which need further offline reprocessing. This scheme required a complete revision of the computing model and rewriting of the experiment's software.
Articolo in rivista - Articolo scientifico
Data acquisition concepts; Data processing methods; Large detector systems for particle and astroparticle physics; Trigger concepts and systems (hardware and software);
English
2024
19
5
P05065
none
Ayres Rocha, D., Baptista de Souza Leite, J., Bediaga, I., Cruz Torres, M., De Freitas Carneiro Da Graca, U., De Miranda, J., et al. (2024). The LHCb Upgrade I. JOURNAL OF INSTRUMENTATION, 19(5) [10.1088/1748-0221/19/05/P05065].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/491379
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