BowcockNewZealand

Information about BowcockNewZealand

Published on October 30, 2007

Author: Rafael

Source: authorstream.com

Content

The LHCb Experiment:  The LHCb Experiment T. Bowcock University of Liverpool For the LHCb Collaboration LHCb(1) Collaboration:  LHCb(1) Collaboration The LHCb Collaboration (September 2001) France: Annecy, Clermont-Ferrand, CPPM Marseille, LAL Orsay Germany: Tech. Univ. Dresden, Phys. Inst. Univ. Heidelberg, KIP Univ. Heidelberg, MPI Heidelberg, Italy: Bologna, Cagliari , Ferrara, Firenze, Frascati, Genoa, Milan, Univ. Rome I (La Sapienza), Univ. Rome II(Tor Vergata) Netherlands: NIKHEF Poland: Cracow Inst. Nucl. Phys., Warsaw Univ. Spain: Univ. Barcelona, Univ. Santiago de Compostela Switzerland: Univ. Lausanne, Univ. Zürich UK: Univ. Bristol, Univ. Cambridge, Univ. Edinburgh, Univ. Glasgow, IC London, Univ. Liverpool, Univ. Oxford, RAL CERN Brazil: UFRJ, CPBF China: IHEP(Beijing), Tsinghua Univ. Russia: BINP, INR, ITEP, IHEP, PNPI Romania: IFIN-HH (Bucharest) Ukraine: Inst. Phys. Tech. (Kharkov), Inst. Nucl. Research (Kiev) Technical Espoo-Vantaa Inst. Tech. (Finland), Geneva Engineering School (Switzerland) Associate: CFET-RJ (Brazil) 45+3 institutes Overview:  Overview Detector Design LHCb Components and Status Physics Summary Detector Design(1) Goals:  Detector Design(1) Goals Simultaneous measurements of ,,, and  Exploration of Bs sector Access to rare b-decays +… Detector Design(2):  Detector Design(2) g a b Detector Design(3) Forward Physics:  Detector Design(3) Forward Physics O(1012)bbpairs/year bb~500b bb/ inelastic~5×10-3 Pairs produced at small angles Modest luminosity LHCb(1) Components:  LHCb(1) Components Reversible field LHCb(2) Particle ID:  LHCb(2) Particle ID ID 1-150GeV/c RICH system divided into 2 detectors and 3 radiators: aerogel, C4F10, CF4 LHCb(3) RICH:  LHCb(3) RICH Acceptance 300 mrad RICH 1 120 mrad RICH 2 Radiators: thickness L, refractive index n, angle c, /K threshold Aerogel C4F10 CF4 L 5 85 167 cm n 1.03 1.0014 1.0005 qc 242 53 32 mrad p 0.6 2.6 4.4 GeV K 2.0 9.3 15.6 GeV LHCb(4) Particle ID:  LHCb(4) Particle ID 3s separation pK 3-80GeV/c 2s separation pK 1-150GeV/c # of detected photons 7 Aerogel 33 C4F10 18 CF4 LHCb(5) Particle ID:  LHCb(5) Particle ID Bd   + (a) Bs  DsK (g) LHCb(6) Vertexing:  LHCb(6) Vertexing VELO LHCb(7) VELO:  LHCb(7) VELO Series of disks LHCb(8) VELO:  LHCb(8) VELO Micron pn&nn Rad tolerant High resolution Xs ~ 80 200,000 channels Low occupancy LHCb(9) Trigger:  LHCb(9) Trigger LHCb(10) Trigger:  LHCb(10) Trigger LHCb(11) Status:  LHCb(11) Status LHCb Experiment Approved Sep 1998 Technical Design Reports Magnet Calorimeter Muon RICH VELO Outer Tracker LHCb(12) Improving Performance:  LHCb(12) Improving Performance Reducing Material Budgets VELO 0.19X0 0.04 RICH1 0.14X0 0.05 Tracking 0.27X0 0.11 Beam Pipe VELO: material, stations RICH: Mirror Tracking Stations Trigger efficiencies Physics(1) 2005:  Physics(1) 2005 BABAR, BELLE Physics(2) LHCb 2007/8:  Physics(2) LHCb 2007/8 Physics(3) LHCb Performance :  Physics(3) LHCb Performance Physics(4) LHCb Performance:  Physics(4) LHCb Performance Physics(5) LHCb Performance:  Physics(5) LHCb Performance Summary:  Summary Second generation b-physics experiment “day-one” operation Superb instrument for exploring possible deviations from SM in B sector Preparation progressing well

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