The LHCb Upgrade I


Aaij, R ORCID: 0000-0003-0533-1952, Abdelmotteleb, ASW ORCID: 0000-0001-7905-0542, Abellan Beteta, C, Abudinén, F ORCID: 0000-0002-6737-3528, Achard, C, Ackernley, T ORCID: 0000-0002-5951-3498, Adeva, B ORCID: 0000-0001-9756-3712, Adinolfi, M ORCID: 0000-0002-1326-1264, Adlarson, P ORCID: 0000-0001-6280-3851, Afsharnia, H et al (show 1316 more authors) (2024) The LHCb Upgrade I. Journal of Instrumentation, 19 (05). P05065-P05065. ISSN 1748-0221, 1748-0221

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Abstract

<jats:title>Abstract</jats:title> <jats:p>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.</jats:p>

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 26 Jun 2024 15:06
Last Modified: 19 Aug 2025 06:29
DOI: 10.1088/1748-0221/19/05/p05065
Open Access URL: https://iopscience.iop.org/article/10.1088/1748-02...
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3182435
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