002276907 001__ 2276907
002276907 005__ 20240509045839.0
002276907 0248_ $$aoai:cds.cern.ch:2276907$$pcerncds:CERN$$pcerncds:CERN:FULLTEXT$$pcerncds:FULLTEXT
002276907 0247_ $$2DOI$$9bibmatch$$a10.1088/1748-0221/12/11/P11016
002276907 035__ $$9arXiv$$aoai:arXiv.org:1708.00819
002276907 035__ $$9Inspire$$aoai:inspirehep.net:1614152$$d2024-05-08T17:49:55Z$$h2024-05-09T02:38:01Z$$mmarcxml$$ttrue$$uhttps://inspirehep.net/api/oai2d
002276907 035__ $$9Inspire$$a1614152
002276907 037__ $$9arXiv$$aarXiv:1708.00819$$cphysics.ins-det
002276907 037__ $$aCERN-LHCB-DP-2017-001
002276907 041__ $$aeng
002276907 100__ $$ad'Argent, Ph.$$uHeidelberg U.$$vPhysikalisches Institut, Heidelberg, Germany
002276907 245__ $$9arXiv$$aImproved performance of the LHCb Outer Tracker in LHC Run 2
002276907 246__ $$9arXiv$$aImproved performance of the LHCb Outer Tracker in LHC Run 2
002276907 269__ $$c2017-08-02
002276907 260__ $$c2017-11-20
002276907 300__ $$a28 p
002276907 500__ $$9arXiv$$a29 pages, 20 figures, minor changes to match the published version
002276907 520__ $$9IOP$$aThe LHCb Outer Tracker is a gaseous detector covering an area of 5 × 6 m2 with 12 double layers of straw tubes. The performance of the detector is presented based on data of the LHC Run 2 running period from 2015 and 2016. Occupancies and operational experience for data collected in pp, pPb and PbPb collisions are described. An updated study of the ageing effects is presented showing no signs of gain deterioration or other radiation damage effects. In addition several improvements with respect to LHC Run 1 data taking are introduced. A novel real-time calibration of the time-alignment of the detector and the alignment of the single monolayers composing detector modules are presented, improving the drift-time and position resolution of the detector by 20%. Finally, a potential use of the improved resolution for the timing of charged tracks is described, showing the possibility to identify low-momentum hadrons with their time-of-flight.
002276907 520__ $$9arXiv$$aThe LHCb Outer Tracker is a gaseous detector covering an area of $5\times 6 m^2$ with 12 double layers of straw tubes. The performance of the detector is presented based on data of the LHC Run 2 running period from 2015 and 2016. Occupancies and operational experience for data collected in $p p$, pPb and PbPb collisions are described. An updated study of the ageing effects is presented showing no signs of gain deterioration or other radiation damage effects. In addition several improvements with respect to LHC Run 1 data taking are introduced. A novel real-time calibration of the time-alignment of the detector and the alignment of the single monolayers composing detector modules are presented, improving the drift-time and position resolution of the detector by 20\%. Finally, a potential use of the improved resolution for the timing of charged tracks is described, showing the possibility to identify low-momentum hadrons with their time-of-flight.
002276907 540__ $$3preprint$$aCC-BY-4.0$$barXiv$$uhttp://creativecommons.org/licenses/by/4.0/
002276907 540__ $$3publication$$9IOP$$aCC-BY-3.0$$uhttp://creativecommons.org/licenses/by/3.0/
002276907 65017 $$2arXiv$$ahep-ex
002276907 65017 $$2SzGeCERN$$aParticle Physics - Experiment
002276907 65017 $$2arXiv$$aphysics.ins-det
002276907 65017 $$2SzGeCERN$$aDetectors and Experimental Techniques
002276907 693__ $$aCERN LHC$$eLHCb
002276907 690C_ $$aCERN
002276907 690C_ $$aARTICLE
002276907 690C_ $$aLHCb_DP
002276907 700__ $$aDufour, L.$$iINSPIRE-00536780$$uNIKHEF, Amsterdam$$vNikhef, Amsterdam, The Netherlands
002276907 700__ $$aGrillo, L.$$iINSPIRE-00390672$$uMilan Bicocca U.$$vBicocca University, Milano, Italy
002276907 700__ $$ade Vries, J.A.$$iINSPIRE-00400290$$uNIKHEF, Amsterdam$$vNikhef, Amsterdam, The Netherlands
002276907 700__ $$aUkleja, A.$$iINSPIRE-00045795$$uWarsaw, Inst. Nucl. Studies$$vA. Soltan Institute for Nuclear Studies, Warsaw, Poland
002276907 700__ $$aAaij, R.$$iINSPIRE-00258707$$uCERN$$vEuropean Organization for Nuclear Research (CERN), Geneva, Switzerland
002276907 700__ $$aArchilli, F.$$iINSPIRE-00340940$$uNIKHEF, Amsterdam$$vNikhef, Amsterdam, The Netherlands
002276907 700__ $$aBachmann, S.$$iINSPIRE-00257758$$uHeidelberg U.$$vPhysikalisches Institut, Heidelberg, Germany
002276907 700__ $$aBerninghoff, D.$$uHeidelberg U.$$vPhysikalisches Institut, Heidelberg, Germany
002276907 700__ $$aBirnkraut, A.$$iINSPIRE-00522660$$uTech. U., Dortmund (main)$$vTechnische Universität Dortmund, Germany
002276907 700__ $$aBlouw, J.$$iINSPIRE-00257778$$uHeidelberg, Max Planck Inst.$$vMax Planck-Institut Für Kernphysik (MPIK), Heidelberg, Germany
002276907 700__ $$ade Cian, M.$$iINSPIRE-00260810$$uHeidelberg U.$$vPhysikalisches Institut, Heidelberg, Germany
002276907 700__ $$aCiezarek, G.$$iINSPIRE-00344785$$uNIKHEF, Amsterdam$$vNikhef, Amsterdam, The Netherlands
002276907 700__ $$aFärber, Ch.$$iINSPIRE-00257792$$uHeidelberg U.$$vPhysikalisches Institut, Heidelberg, Germany
002276907 700__ $$aDemmer, M.$$iINSPIRE-00536774$$uTech. U., Dortmund (main)$$vTechnische Universität Dortmund, Germany
002276907 700__ $$aDettori, F.$$iINSPIRE-00258140$$uLiverpool U.$$vOliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
002276907 700__ $$aGersabeck, E.$$iINSPIRE-00357178$$uHeidelberg U.$$vPhysikalisches Institut, Heidelberg, Germany
002276907 700__ $$aGrabowski, J.$$uHeidelberg U.$$vPhysikalisches Institut, Heidelberg, Germany
002276907 700__ $$aHulsbergen, W.D.$$iINSPIRE-00091582$$uNIKHEF, Amsterdam$$vNikhef, Amsterdam, The Netherlands
002276907 700__ $$aKhanji, B.$$iINSPIRE-00257475$$uHeidelberg U.$$vPhysikalisches Institut, Heidelberg, Germany
002276907 700__ $$aKolpin, M.$$iINSPIRE-00453628$$uHeidelberg U.$$vPhysikalisches Institut, Heidelberg, Germany
002276907 700__ $$aKucharczyk, M.$$iINSPIRE-00258880$$uCracow, INP$$vH. Niewodniczanski Institute of Nuclear Physics, Cracow, Poland
002276907 700__ $$aMalecki, B.P.$$uCracow, INP$$vH. Niewodniczanski Institute of Nuclear Physics, Cracow, Poland
002276907 700__ $$aMerk, M.$$iINSPIRE-00106980$$uNIKHEF, Amsterdam$$vNikhef, Amsterdam, The Netherlands
002276907 700__ $$aMulder, M.$$uNIKHEF, Amsterdam$$vNikhef, Amsterdam, The Netherlands
002276907 700__ $$aMüller, J.$$iINSPIRE-00522744$$uTech. U., Dortmund (main)$$vTechnische Universität Dortmund, Germany
002276907 700__ $$aMueller, V.$$iINSPIRE-00522759$$uTech. U., Dortmund (main)$$vTechnische Universität Dortmund, Germany
002276907 700__ $$aPellegrino, A.$$iINSPIRE-00173740$$uNIKHEF, Amsterdam$$vNikhef, Amsterdam, The Netherlands
002276907 700__ $$aPikies, M.$$iINSPIRE-00392248$$uCracow, INP$$vH. Niewodniczanski Institute of Nuclear Physics, Cracow, Poland
002276907 700__ $$aRachwal, B.$$iINSPIRE-00392425$$uWarsaw, Inst. Nucl. Studies$$vA. Soltan Institute for Nuclear Studies, Warsaw, Poland
002276907 700__ $$aSchmelzer, T.$$iINSPIRE-00522799$$uTech. U., Dortmund (main)$$vTechnische Universität Dortmund, Germany
002276907 700__ $$aSpaan, B.$$iINSPIRE-00128007$$uTech. U., Dortmund (main)$$vTechnische Universität Dortmund, Germany
002276907 700__ $$aSzczekowski, M.$$iINSPIRE-00259072$$uWarsaw, Inst. Nucl. Studies$$vA. Soltan Institute for Nuclear Studies, Warsaw, Poland
002276907 700__ $$avan Tilburg, J.$$iINSPIRE-00260865$$uNIKHEF, Amsterdam$$vNikhef, Amsterdam, The Netherlands
002276907 700__ $$aTolk, S.$$iINSPIRE-00357337$$uCambridge U.$$vCavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
002276907 700__ $$aTuning, N.$$iINSPIRE-00258853$$uNIKHEF, Amsterdam$$vNikhef, Amsterdam, The Netherlands
002276907 700__ $$aUwer, U.$$iINSPIRE-00133105$$uHeidelberg U.$$vPhysikalisches Institut, Heidelberg, Germany
002276907 700__ $$aWishahi, J.$$iINSPIRE-00257673$$uTech. U., Dortmund (main)$$vTechnische Universität Dortmund, Germany
002276907 700__ $$aWitek, M.$$iINSPIRE-00258926$$uCracow, INP$$vH. Niewodniczanski Institute of Nuclear Physics, Cracow, Poland
002276907 710__ $$gLHCb Outer Tracker group
002276907 773__ $$cP11016$$n11$$pJINST$$v12$$y2017
002276907 8564_ $$81336278$$s6061137$$uhttp://cds.cern.ch/record/2276907/files/arXiv:1708.00819.pdf
002276907 8564_ $$81336279$$s30087$$uhttp://cds.cern.ch/record/2276907/files/figs_Tracktime_trackSamePVdeltaT.png$$y00018 \small (a) The difference between the average time per primary vertex, for events with two reconstructed primary vertices. (b) The difference between the time of two tracks belonging to the same primary vertex.
002276907 8564_ $$81336280$$s4518$$uhttp://cds.cern.ch/record/2276907/files/figs_Tracktime_Data15_TrackTimes_sig_proton_bkg_pion_cutPs7.png$$y00014 \small The distribution of track times for protons and pions with $p<7 \gevc$ in (a) simulation and (b) in data.
002276907 8564_ $$81336281$$s12558$$uhttp://cds.cern.ch/record/2276907/files/figs_magup_magdown_occupancy_data.png$$y00004 \small The hit distribution is shown for both magnet polarities, using 30,000 random events for both samples, without any trigger requirement. The vertical dashed line indicates the mechanical split between the two detector halves, at $x=-8$~cm.
002276907 8564_ $$81336282$$s48949$$uhttp://cds.cern.ch/record/2276907/files/figs_fig1a.png$$y00000 \small (a) OT module cross section, with distances in mm. (b) Arrangement of OT straw-tube modules in layers and stations.
002276907 8564_ $$81336283$$s10957$$uhttp://cds.cern.ch/record/2276907/files/figs_Pb_total_occupancy_overview_pbp_ppb.png$$y00006 \small The average number of recorded hits (a) in minimum bias proton-proton and \PbPb collisions and (b) \pPb and \Pbp collisions.
002276907 8564_ $$81336284$$s4581$$uhttp://cds.cern.ch/record/2276907/files/figs_Tracktime_MC_TrackTimes_sig2212_bkg211_cutPs7.png$$y00013 \small The distribution of track times for protons and pions with $p<7 \gevc$ in (a) simulation and (b) in data.
002276907 8564_ $$81336285$$s11130$$uhttp://cds.cern.ch/record/2276907/files/figs_prevET_effect_of_sumet_prev.png$$y00002 \small The recorded drift time spectrum for all hits in the Outer Tracker for no-bias events with $25\ns$ bunch spacing. (a) in blue, the same spectrum recorded while keeping only events with $\Sigma E_T (Prev) \leq 1000$. (b) the difference of the two TDC spectra, scaled such the difference is 0 at the $TDC=150$ bin.
002276907 8564_ $$81336286$$s12614$$uhttp://cds.cern.ch/record/2276907/files/figs_Tracktime_MC_ROC_sig2212_bkg211_cutPs7.png$$y00015 \small The pion rejection rate as a function of the proton efficiency for (a) simulation and (b) data.
002276907 8564_ $$81336287$$s9807$$uhttp://cds.cern.ch/record/2276907/files/figs_prevET_difference.png$$y00003 \small The recorded drift time spectrum for all hits in the Outer Tracker for no-bias events with $25\ns$ bunch spacing. (a) in blue, the same spectrum recorded while keeping only events with $\Sigma E_T (Prev) \leq 1000$. (b) the difference of the two TDC spectra, scaled such the difference is 0 at the $TDC=150$ bin.
002276907 8564_ $$81336288$$s9183$$uhttp://cds.cern.ch/record/2276907/files/figs_Tracktime_OThitsPerTrack.png$$y00010 \small (a) The number of OT hits per track $N$, where the drift-time is used. (b) The uncertainty on the time per track, as estimated from time resolution per hit, $\sigma_t/\sqrt{N}$.
002276907 8564_ $$81336289$$s15329$$uhttp://cds.cern.ch/record/2276907/files/figs_ot.png$$y00001 \small (a) OT module cross section, with distances in mm. (b) Arrangement of OT straw-tube modules in layers and stations.
002276907 8564_ $$81336290$$s10151$$uhttp://cds.cern.ch/record/2276907/files/figs_Tracktime_PVTimeDiff.png$$y00017 \small (a) The difference between the average time per primary vertex, for events with two reconstructed primary vertices. (b) The difference between the time of two tracks belonging to the same primary vertex.
002276907 8564_ $$81336291$$s10712$$uhttp://cds.cern.ch/record/2276907/files/figs_Pb_total_occupancy_overview_pp_pbpb.png$$y00005 \small The average number of recorded hits (a) in minimum bias proton-proton and \PbPb collisions and (b) \pPb and \Pbp collisions.
002276907 8564_ $$81336292$$s12046$$uhttp://cds.cern.ch/record/2276907/files/figs_Tracktime_Data15_ROC_sig_proton_bkg_pion_cutPs7.png$$y00016 \small The pion rejection rate as a function of the proton efficiency for (a) simulation and (b) data.
002276907 8564_ $$81336293$$s8985$$uhttp://cds.cern.ch/record/2276907/files/figs_Tracktime_plotBetas_timePionProtonDiff.png$$y00012 \small The difference in time-of-flight between protons and pions as a function of their momentum.
002276907 8564_ $$81336294$$s9802$$uhttp://cds.cern.ch/record/2276907/files/figs_Tracktime_trackTimeErr.png$$y00011 \small (a) The number of OT hits per track $N$, where the drift-time is used. (b) The uncertainty on the time per track, as estimated from time resolution per hit, $\sigma_t/\sqrt{N}$.
002276907 8564_ $$81382323$$s104735$$uhttp://cds.cern.ch/record/2276907/files/figs_eps_TR_colz_cp56.png$$y00007 The drift time versus the unbiased distance distribution with the overlaid TR-relation curve, obtained from the fit (black line).
002276907 8564_ $$81382324$$s6106898$$uhttp://cds.cern.ch/record/2276907/files/10.1088_1748-0221_12_11_P11016.pdf$$yFulltext
002276907 8564_ $$81382325$$s11974$$uhttp://cds.cern.ch/record/2276907/files/figs_eps_t_res_corrected.png$$y00008 (a) Drift-time residual distribution and (b) hit distance residual distribution.
002276907 8564_ $$81382326$$s10987$$uhttp://cds.cern.ch/record/2276907/files/figs_eps_dist_res_corrected.png$$y00009 (a) Drift-time residual distribution and (b) hit distance residual distribution.
002276907 960__ $$a13
002276907 980__ $$aARTICLE
002276907 980__ $$aLHCb_DP