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Status Update on Muon System Data Taking and Hardware Performance at LHCb

This report outlines the current status of the Muon system hardware and the Electronics Control System (ECS) as assessed during the LHCb week. The hardware remains stable; some inefficiencies were noted, particularly with two chambers not connected to the gas supply, impacting performance. Noise issues were noted with the "bump" in DQ histograms. Monitoring and calibration efforts are ongoing, with specific attention to dead and noisy channels. Updates on error banks and firmware adjustments are also discussed, indicating a focus on enhancing system reliability.

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Status Update on Muon System Data Taking and Hardware Performance at LHCb

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  1. Muon System data taking G. Passaleva INFN - Florence

  2. Outline • Status of hardware • Status of ECS • Thresholds, Noise LHCb week

  3. Status of hardware • Hardware rather stable from the point of view of dead/noisy channels Cosmic runs 11-18 Feb 2010  800k tracks 2 chambers not connected to the gas supply! Some inefficiency visible in february LHCb week

  4. Status of hardware • Hardware rather stable from the point of view of dead/noisy channels Physics fills in late may 2 chambers not connected to the gas supply! Completely dead in may (infact: HV off!) Some noise appears here It caused the famous “bump” spotted in the DQ histos LHCb week

  5. Status of hardware • Hardware rather stable from the point of view of dead/noisy channels Physics fills in June 2 chambers not connected to the gas supply! Still not fixed… No more noise after threshold tuning at end of may ! LHCb week

  6. Status of hardware • Dead channels detail: • M2-M5: 11 / 16704 (0.07%) • M1: 42 /9216 ( 0.5% ) • M1-M5: 53/25920, (0.2%) • Fix M1A 22C+24C: • Next long shutdown, beam pipe need to be vented LHCb week

  7. Status of ECS • HV control system: after the deep revision in January it is very stable and reliable • Also the ECS in general did not show major problems or failures • Implementation ODEs monitoring and alarms • Maurizio is working on that. More difficult than foreseen. A lot of parameters to be monitored: need to be implemented at firmware level not to overload the OPC servers • Work on Muon Error Banks in TELL1 • Erros banks could be created but their format was found to be incorrect – still investigating • Implement FEBs configuration parameters monitoring and alarms • Davide is coming in August at CERN and will work on this. Same considerations as ODE hold for the FEBs LHCb week

  8. Monitoring, Calibration • See Giacomo’s talk now…. LHCb week

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