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RPC project status. Muon IB 28 February 2012 Pigi Paolucci INFN Napoli & CERN. 2012 Detector start-up. RPC system is ON since a week, how it is working ?. Hardware status. At the moment we have 11 Chambers OFF, same number of 2011 One new single gap chamber in the barrel.

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rpc project status

RPC project status

Muon IB

28 February 2012

Pigi Paolucci

INFN Napoli & CERN

2012 detector start up
2012 Detector start-up

RPC system is ON since a week, how it is working ?

Muon IB - Pigi Paolucci

hardware status
Hardware status
  • At the moment we have 11 Chambers OFF, same number of 2011
  • One new single gap chamber in the barrel.
  • 3.5% of dead and masked channels

Muon IB - Pigi Paolucci

current stability during mwgr
Current stability during MWGR

Muon IB - Pigi Paolucci

noise results from mwgr
Noise results from MWGR
  • Run 185984 (last night, long run): ~1.0% masked channels, ~1.3% dead channels
  • 18 chambers off (5 in the barrel, 13 in the endcap)
  • Average noise ~3 Hz/cm2 (barrel), ~0.3 Hz/cm2 (endcap)

Muon IB - Pigi Paolucci

few noisy strips in barrel region
Few noisy strips in Barrel region

Muon IB - Pigi Paolucci

noisy strips from dqm yes is possible
Noisy strips from DQM ? YES is possible

Run 185 984

All hits Plots

ENDCAP

BARREL

from 2 to 25  noise

Muon IB - Pigi Paolucci

slide9

BARREL

Run 185 984

Similar in the 5 wheels

Bottom trigger

Noisy strips/chamber

from DQM tool

Muon IB - Pigi Paolucci

trigger correlation
Trigger correlation

Muon IB - Pigi Paolucci

2012 open issues and organization
2012 – Open Issues and organization
  • Deputy DPG
    • Karol confirmed, Silvia Costantini (Ghent) new
  • PVT group
    • Marcello Abbrescia is the new coordinator
  • Task force
    • Efficiency method validation
    • HV scan
    • Bakelite production
    • Gas leak studies

Muon IB - Pigi Paolucci

upgrade summary report
Upgrade Summary Report
  • First batch of Bakelite sheets, produced and tested in Pavia, washed at General Tecnica, is now in Korea
  • Most of the sheets show a dirty surface and cannot be used to produce gaps – Second batch will be followed step by step by our experts (March)
  • 3 Test sites are almost ready
  • New link and control boards have been successfully tested at 904 and installed in the Barrel – We will keep them running
  • Database work is proceeding very well, thanks to Anton, Daniela and new Pakistan experts.

Muon IB - Pigi Paolucci

2011 summary table
2011 Summary table
  • Data Loss for RPC 19 pb‐1 – 0.37%
  • Overall Operating Channels 98.4%
  • Average Efficiency 95%
  • Average Cluster Size < 2
  • Average Noise rate (3 ·1033 cm-2 s-1)1.3 Hz/cm2
  • Max Noise rate (3 ·1033 cm-2 s-1)RE-2/2/C < 7 Hz/cm2
  • Average intrinsic noise (no-beam) ~ 0.1 Hz/cm2
  • Average current (no-beam) ~ 1 mA
  • Average current (with beam) ~ 1.5 mA
  • Temperature < 21.5 oC

Muon IB - Pigi Paolucci

2012 goals and milestones no news
2012 goals and milestones (no news)
  • New efficiency method; test and then in DQM
  • 2012 HV scan and comparison with 2011
  • Background studies at high luminosity (1-5 1033)
  • Background summary results in WBM
  • Automatic PVT
  • Long 2013-2104 shut-down plan definition (July 2012)
  • Gaps and chambers production
  • 904 cosmic stand and laboratory start-up 
  • Link and Control board preproduction and test (Feb) 

Muon IB - Pigi Paolucci

dates to remember
Dates to remember
  • Muon Week – 18-21 March – CERN
  • Bakelite production validation – March
  • HV scan – April
  • Long Shut-down workshop – June

Muon IB - Pigi Paolucci

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