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DQM for the RPC subdetector. M. Maggi and P. Paolucci. Outlook. RPC DQM requirements event Data DQM – what we have done and learned during the MTCC we need more “sophisticated” DQM tools to access online database (non event data) guidelines and open issues DQM group composition - PowerPoint PPT Presentation
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DQM for the RPC subdetector
M. Maggi and P. Paolucci
DQM workshop - 28 feb 072
M. Maggi and P. Paolucci
Outlook
RPC DQM requirementsevent Data DQM – what we have done and learned during the MTCCwe need more “sophisticated” DQM tools to access online database (non event data)guidelines and open issuesDQM group compositionconclusions
DQM workshop - 28 feb 073
M. Maggi and P. Paolucci
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 DBQuasi-online monitoring for RPC shifters: using all the LV1 muon events (more statistics) and Condition DBOffline monitoring for RPC experts to have a full analysis: using the CMS events, reconstruction tools, DBs ……
DQM workshop - 28 feb 074
M. Maggi and P. Paolucci
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
POOLSource
Raw Data Digi
UnpackerDAQ
Clusters/RecHits
Local Muon Reconstruction RPCMonitorDigi
RPCMonitorModule
Event
DQM workshop - 28 feb 075
M. Maggi and P. Paolucci
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 076
M. Maggi and P. Paolucci
Guidelines answers
YES, we need history/trendig plots (efficiency, occupancy, cluster size…)YES, we need correlation trendsYES, we need tools to extract complex info from condition DB and repositoryYES, we are using IGUANA to present DQM resultsMORE, we have to work on how make histo/result persistentMORE, we developed a first prototype of a synoptic view YES, we have a clear hierarchical view of the plotsNO, automatic analysis procedures, for the moment YES, we can converge on a run quality flags but we have to work on
DQM workshop - 28 feb 077
M. Maggi and P. Paolucci
RPC synoptic view
We are working onto have a fullsynoptic view of our system with interactivefeatures, alarm, warning and error
DQM workshop - 28 feb 078
M. Maggi and P. Paolucci
Do we need .. More .. Tools ? YES
For RPC it is CRUCIAL to correlate event data DQM info 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 analyze data for the RPC expert (offline)
DQM workshop - 28 feb 079
M. Maggi and P. Paolucci
Do we need .. More .. Tools ? YES
For MTCC data we developed the following tool CAT
For data tacking we want to integrate it in the DQM but we need to take some decisions:
1. How access online at the Condition DB: direct access to the DB or to a replication of the DB ??
2. Which and how many plots we want to store permanently ??
3. Do we need reference plots also for correlated data ??4. Can we show/store in the DQM full DCS and XDAQ
histograms/results too ??
Analysis tools
Online DB Root files
DB query
histograms
DB replication
DQM workshop - 28 feb 0710
M. Maggi and P. Paolucci
Histos produced during the MTCC using CAT
RMS distribution of the 23 chambers for a 4 days period with magnet ON and stable conditions
Having 480 chambers only in the barrel it was very useful to have summary plot from DCS (retrieving data from cond. db). We need to think about more summary plots from DQM–DCS–XDAQ
RMS = 0.5 A
Chamber to check using more info from DCS-DQM-XDAQ for RPC expert
DQM workshop - 28 feb 0711
M. Maggi and P. Paolucci
A way to use DB
OMDS@IP5 ORCON@IP5ORCOFF@T0
HLT-CMSSW application Reconstruction-CMSSW application
read/writeread/write objects
read/write read/write objects
Transformation (O2O)
DCS/DQM
Application
DQM/Offline
Application
DQM workshop - 28 feb 0712
M. Maggi and P. Paolucci
The open issues … for us
How many CPUs on Filter Farm will be used for DQM (0-10% of HTL) ?
Which muon trigger downscale we can effort ?Can we have a muon rate of KHz in the Filter Farm ?
What can we run on the Storage Manager ?Which latency we can effort for non-event data (Online DB duplication in IT) ?Do we need dedicated RPC CPUs and disks to run the quasi-online DQM ?How have an unique graphical interface for DCS-DQM-XDAQ to help people in shift ?
Questions will be already answered here
DQM workshop - 28 feb 0713
M. Maggi and P. Paolucci
RPC DQM group composition
The group works in the DPG under the supervision of M. Maggi and myself and in contact with Muon DPG people.
detector DQM:Bari – 4 people sharing with Offline/DQM
Napoli – 5 people sharing with DCS
Pavia –2 people sharing with Reco & Ev Displ.
trigger DQM: Warsaw group sharing with trigger activities
We need people from the endcap groups
DQM workshop - 28 feb 0714
M. Maggi and P. Paolucci
Conclusions
The RPC-specific components of the DQM structure in CMSSW are well under development and tested on MTCC data with proper Global DAQ format.
The development now must focus now on: Interface DQM with the Condition DB
Production of historical plots, with interface to off-line DB
Select a few number of “smart” summary histo/plot/tables
Use also higher level objects (muon tracks, reco tools….)
We are developing: detector visualization and web interface, quality test producing warning, error and alarm and tree-like structure for histo, plot….