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DQM for the RPC subdetector

DQM for the RPC subdetector. M. Maggi and P. Paolucci. RPC DQM requirements. DQM has to monitor the RPC detector/trigger behavior and measure and summarize their performances:

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DQM for the RPC subdetector

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  1. DQM for the RPC subdetector M. Maggi and P. Paolucci

  2. RPC DQM requirements DQM has to monitor the RPC detector/trigger behavior and measure and summarize their performances: • Online monitoring for CMS shifters: DQM and DCS providing: Histograms, trending and correlation plots, numbers, alarms …. and references … using a pre-scaled subset of LV1 muon events and Condition DB • Quasi-online monitoring for RPC shifters: using all the LV1 muon events (more statistics) and Condition DB • Offline monitoring for RPC experts to have a full analysis: using the CMS events, reconstruction tools, DBs …… DQM workshop - 28 feb 07

  3. RPCMonitorModule RPCMonitorDigi DAQ Unpacker Local Muon Reconstruction Raw Data Digi Clusters/RecHits Event POOLSource Event Data monitoring STATUS I DQM-analysis packages developed for RPC in CMSSW and test during the MTCC: • EventFilter/RPCRawToDigi (Segoni - Maggi): It drives the raw data unpacking and produces the RPCDigi collection committed to the event. • DQM/RPCMonitorModule (Segoni – Maggi): it carries out data integrity check and basic detector functioning tasks DQM workshop - 28 feb 07

  4. Event Data monitoring STATUS II • DQM/RPCMonitorDigi: Uses the digi produced by the unpacker (i.e. for each h-partition the collection strip with signal and the BX ) to perform chamber performance checks: • BXN • # of digi • Occupancy • Cluster multiplicity • Cluster size • Sync:Specific trigger studies • Chamber efficiency is produced by extrapolating DT segments to the RPC mounted on the same DT chamber and looking for matching hits DQM workshop - 28 feb 07

  5. Do we need .. More .. Tools ? YES • We want to correlate event data DQM variables/histograms with PVSS and XDAQ non event data: • Chamber efficiency .vs. Noise (XDAQ) • Chamber efficiency .vs. Current (PVSS) • Noise (XDAQ) .vs. Temperature (PVSS) • Cluster size .vs Temperature (PVSS) • ………………………………………….. • To let understand the behavior of the RPC system we need: • few summary plots for the DQM shifter (online) • more plots for RPC shifter (quasi-online) • a complete way to analize data for the RPC expert (offline) DQM workshop - 28 feb 07

  6. DQM/Offline Application DCS/DQM Application Transformation (O2O) ORCOFF@T0 ORCON@IP5 OMDS@IP5 read/write objects read/write objects HLT-CMSSW application Reconstruction-CMSSW application A way to use DB DQM workshop - 28 feb 07

  7. The open issues • How many CPUs on Filter Farm for DQM • Which trigger downscale we can effort • Which monitor modules are mandatory • What can we run on the Storage Manager • Which latency we can effort for non-event data (OnlibeDB duplication in IT) • Do we need dedicated CPUs and disks on CMS Centre (Vs CAF) DQM workshop - 28 feb 07

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