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RPC project status

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

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  1. RPC project status Muon IB 28 February 2012 Pigi Paolucci INFN Napoli & CERN

  2. 2012 Detector start-up RPC system is ON since a week, how it is working ? Muon IB - Pigi Paolucci

  3. 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

  4. Muon IB - Pigi Paolucci

  5. Current stability during MWGR Muon IB - Pigi Paolucci

  6. 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

  7. Few noisy strips in Barrel region Muon IB - Pigi Paolucci

  8. Noisy strips from DQM ? YES is possible Run 185 984 All hits Plots ENDCAP BARREL from 2 to 25  noise Muon IB - Pigi Paolucci

  9. BARREL Run 185 984 Similar in the 5 wheels Bottom trigger Noisy strips/chamber from DQM tool Muon IB - Pigi Paolucci

  10. Trigger correlation Muon IB - Pigi Paolucci

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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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