Study of CP violation in B meson decays - CERNlhcb-doc.web.cern.ch/lhcb-doc/presentations/conferencetalks/... · Study of CP violation in B meson decays ... VErtex LOcator ... Silicon

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LHC Days in SplitStatus of LHCb construction

06.10.2004 Rustem DZHELYADIN (IHEP, Protvino)

Study of CP violation in B meson decaysVertex reconstructionParticle ID up to 100GeVMagnet spectrometerCalorimetersMuon system

Efficient multilevel triggerExperiment control andData acquisition Systems

On behalf of the LHCb Collaboration

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Status of LHCb construction

Beam pipe


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Dipole magnet


20/01/2004

17/11/2003

12/12/2003

Magnet install in 2003-04

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Dipole magnet


01/09/2004

Magnet assembly doneMoved to working location

(~1500 ton)Connected to supplies

Currently preparing forfield measurement

Ready for detector installin November 2004

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VErtex LOcator


IP

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VErtex LOcator


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VErtex LOcator


VELO mechanicsunder construction

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VErtex LOcator


Final prototype test in 2004Mass production in 2005

-2oC

-7oC

-14oC

-22oC

-25oC

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Upstream integration


TT siliconRICH1

VELO

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RICH 1


Gas enclosure

Beryllium spherical mirrors

Quartz windows

Seal directly to the VELO exit window

Glass secondary plane mirrors (outside the acceptance)

Magnetic shields (each ~8 tonnes of “Armco” iron)

7x14 HPD arrays

Exit windowseals tobeampipe

∫Bdl~0.15 Tm

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Silicon Tracker


Trigger TrackerTTa and TTb ladder structure

Prototype half-ladder under test

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Silicon Tracker


Beam-test lay-out

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Inner Tracker


Finalizing detailsWafer production in 2005

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Outer Tracker


185 F-modules

124 S-modules

Three production facilities operational

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Outer Tracker


Straw tube chamber production site

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Outer Tracker


¼ medium station

Mass production achieve nominal rate at 3 sites,

completion in 2005

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RICH 2


Construction of mechanicsMirrors to be installed soon

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RICH 2


Readout chip

Silicon sensor

Bump-bonding

Packaging

Ceramic carrier

Brazing and gold-plating

HPD encapsulation

Prototype and technology verified484 + spares HPD production started

Hybrid Photo Detector construction

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Calorimeters


Single Particle Detector and

Pre-Shower

Supermodule

MaPMT+VFE

Fiber mapping

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Calorimeters (ECAL)


ECAL – 3300 modules assembly completedUnder cosmic test Preparing for installation in 2005

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Calorimeters (ECAL)


ECAL support construction

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Calorimeters (HCAL)


HCAL modules construction (completion in 2004)

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Calorimeters (HCAL)


HCAL optics assembly

Tiles -12 ton

Fibers – 80 km

Iron – 500 t

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Calorimeters (HCAL)


HCAL support constructionDelivery in 2004

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Calorimeters (HCAL)


HCAL modules (in total 52)• test pile-up of 8 modules• cabling and final test

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Muon System


Muon shield assembly in cavern(completion 2004)

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R4

R3

R2R1


Muon System


Regions in muon station

Beam pipe

5 muon stations4 regions in each

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Muon System


3-GEM

Total: 1368 MWPC + 24 3-GEM + Spares 5 production sites in operation

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Muon System


Muon MWPC production

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Muon System


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Summary


Detector construction is advancing well

Installation schedule • 2004 – magnet, muon shielding• 2005 – calorimeters, RICH, supports• 2006 – trackers, electronics

Meet physics goals with LHC start up in 2007

Study of CP violation in B meson decays - CERNlhcb-doc.web.cern.ch/lhcb-doc/presentations/conferencetalks/... · Study of CP violation in B meson decays ... VErtex LOcator ... Silicon

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