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Status of the LHCb Pixel Detector

The LHCb experiment at CERN is a general-purpose forward spectrometer at LHC (CERN) optimized for heavy flavour physics and rare decays. It provides a coverage of 2 < $\eta$ < 5 with a momentum resolution of 0.5 $\%$ at pT < 20 GeV. A data-set of 10 fb$^{-1}$ has been collected at the end o...

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Autor principal: Lemos Cid, Edgar
Lenguaje:eng
Publicado: 2023
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.420.0009
http://cds.cern.ch/record/2868229
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author Lemos Cid, Edgar
author_facet Lemos Cid, Edgar
author_sort Lemos Cid, Edgar
collection CERN
description The LHCb experiment at CERN is a general-purpose forward spectrometer at LHC (CERN) optimized for heavy flavour physics and rare decays. It provides a coverage of 2 < $\eta$ < 5 with a momentum resolution of 0.5 $\%$ at pT < 20 GeV. A data-set of 10 fb$^{-1}$ has been collected at the end of Run 2, followed by a major detector upgrade (Upgrade I), fully replacing the vertex and trigger subsystems [1]. The Vertex Locator (VELO) is a silicon pixel tracking detector in the heart of the LHCb spectrometer. As a higher instantaneous luminosity of $2*10^{33} s^{-1} cm^{-2}$ is expected during Run 3 (2022 - 2025), the VELO has been upgraded by a brand-new detector. This new VELO replaces the silicon-strip technology with new 55 micrometers pitch pixels, operating as close as a 5 mm radius from the LHC beams. The VELO new readout ASIC, called VeloPix, is capable of operating at the 40 MHz collision rate, reaching 900 MHits/s. The detector is built with a modular design, composed of 52 modules divided into two-detector halves. The production of the required modules was completed in 2021, leading to the detector assembly phase. Both detector halves were successfully installed in May 2022. In this paper, the final steps of construction and installation will be shown. The detector is now under commissioning with beam and preliminary results will also be presented.
id cern-2868229
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2023
record_format invenio
spelling cern-28682292023-08-24T18:50:01Zdoi:10.22323/1.420.0009http://cds.cern.ch/record/2868229engLemos Cid, EdgarStatus of the LHCb Pixel DetectorDetectors and Experimental TechniquesThe LHCb experiment at CERN is a general-purpose forward spectrometer at LHC (CERN) optimized for heavy flavour physics and rare decays. It provides a coverage of 2 < $\eta$ < 5 with a momentum resolution of 0.5 $\%$ at pT < 20 GeV. A data-set of 10 fb$^{-1}$ has been collected at the end of Run 2, followed by a major detector upgrade (Upgrade I), fully replacing the vertex and trigger subsystems [1]. The Vertex Locator (VELO) is a silicon pixel tracking detector in the heart of the LHCb spectrometer. As a higher instantaneous luminosity of $2*10^{33} s^{-1} cm^{-2}$ is expected during Run 3 (2022 - 2025), the VELO has been upgraded by a brand-new detector. This new VELO replaces the silicon-strip technology with new 55 micrometers pitch pixels, operating as close as a 5 mm radius from the LHC beams. The VELO new readout ASIC, called VeloPix, is capable of operating at the 40 MHz collision rate, reaching 900 MHits/s. The detector is built with a modular design, composed of 52 modules divided into two-detector halves. The production of the required modules was completed in 2021, leading to the detector assembly phase. Both detector halves were successfully installed in May 2022. In this paper, the final steps of construction and installation will be shown. The detector is now under commissioning with beam and preliminary results will also be presented.oai:cds.cern.ch:28682292023
spellingShingle Detectors and Experimental Techniques
Lemos Cid, Edgar
Status of the LHCb Pixel Detector
title Status of the LHCb Pixel Detector
title_full Status of the LHCb Pixel Detector
title_fullStr Status of the LHCb Pixel Detector
title_full_unstemmed Status of the LHCb Pixel Detector
title_short Status of the LHCb Pixel Detector
title_sort status of the lhcb pixel detector
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.22323/1.420.0009
http://cds.cern.ch/record/2868229
work_keys_str_mv AT lemoscidedgar statusofthelhcbpixeldetector