27 December 2006 LHCb Status Report (A.Vorobyov) 1

LHCb

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LHCb

LHCb

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MWPC production at PNPI

M3R4 M2R4 M4R4

Production plans 200 200 200

Produced by Dec.2006 200 200 200  

Passed all tests at PNPI 197 200 200All classified as Class A except

3 bad M3R4 produced in the beginning of production

Delivered to CERN 197 200 130*

Production at PNPI-1 is finished. Production at PNPI-2 is finished.

*)The last transport to CERN is arriving November 28, 2006 with 70 M4R4.

27 December 2006 LHCb Status Report (A.Vorobyov) 4

MWPC preparations at CERNPreparation Phase

11 Gas leak tests

2 HV test - 1 Dark currents at HV up to 2.9 kV

3 Pad capacity tests

4 Preparations for chamber dressing

5 HV test – 2 Dark currents at HV up to 2.85 kV

6 Mounting Faraday Cages

7 Dressing with HV and LV lines

1 Installation of FE electronics

2 Pre-installation tests

- Thresh. Scan ( Noise counts, Pulse generator counts)

- HV test - 3 Dark current up to 2.85 kV

- Cosmic ray tests

Preparation Phase 2

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MWPC preparations at CERN

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Preparation Phase 2

Pre-installation Test Stand

5 chambers can be tested simultaneously

with the rate of5 chambers per day

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Chambers M4R4 # 53, 54, 55, 56, 57 Run198 2550_0_0_0 100 sec

Cosmic Ray Counts from Internal Counters. Thresh = 15fC. GapA in 5 chambers.

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Construction StatusLHCb Spectrometer

VELO

RICH1

TT

Magnet

OT

RICH2 Calo. System

Muon System

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IP8 now...IP8 Now

Mu-system

PS

SPD

RICH-2

OT

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Muon wall preparation

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Further planning

In the optimistic planning with the pre-installation tests rate of 5 chambers per day,

all 600 chambers could be ready for installation

by the end of May,2007

However, there will be still problems with additional conditioning of the chambers ,repairs etc that may require

some additional time

HV-System for 4000 channels