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CMS Web-Based Monitoring Tutorial for DT Shifters

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raiden
19 diapositives · 315 Views · Sep 18, 2014

This tutorial provides an in-depth overview of the CMS Web-Based Monitoring (WBM) system, specifically designed for Drift Tube (DT) shifters. Discover how this set of Java-based tools allows remote access to crucial DCS variables, offering insights into voltages, temperatures, and hardware errors stored in the OMDS database. Learn about the various tools available for monitoring, including Run Summary, Trigger Rates, and DT-specific tools. Gain essential knowledge to track detector status from outside the CERN network, ensuring effective oversight during operations.

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CMS Web-Based Monitoring Tutorial for DT Shifters
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  1. Web Based Monitoring DT online shifter tutorial JesúsPuerta-Pelayo CIEMAT Muon_Barrel_Workshop_07/July/10

  2. CMS Web Based Monitoring • What is CMS WBM? • WHAT: set of java based web tools • WHAT FOR: remote (read-only) access, retrieving and monitoring of DCS variables (or any other info stored in OMDS) OMDS: Oracle database containing mostly detector related quantities (Voltages, temperatures, HW errors...) • WHO: • Core support team (technical support, common tools, maintenance) • Subdetector experts (development of detector-specific tools) • Accesible from outside CERN network (CERN certificate) https://twiki.cern.ch/twiki/bin/view/CMS/OnlineWBWebBasedMonitoring http://cmswbm.cern.ch

  3. Why is WBM useful for a DT shifter? • It’s the official tool for the monitoring of CMS status from outside CMS. • First glimpse of detector status (from outside, no tunnel required) • LastValue, TriggerRates, Page Zero... • Historical values • RunSummary, Trend of variables, Downtime Logger • Most of the tools are expert-oriented, but still it’s recommendable to know where to look at, in case we want to trace back problems.

  4. CMSWBM home & tools Sub-detector tools Central tools

  5. Central tools (I): Run Summary https://cmswbm.web.cern.ch/cmswbm/cmsdb/servlet/RunSummary For a given run, RunSummary retrieves historical information (configurations, subdetectors status, Bfield...) Selection can be done on time, type of run, subdetectors included, etc. The ongoing run can be checked To be used : Check the conditions of a run (general conditions and subdetectorconfig)

  6. Central tools (I): Run Summary Snapshot of information shown by RunSummary for a particular run Basic variables Subdetector specific run summaries Trigger & LHC info Bla

  7. Central tools (II): Trigger Rates https://cmswbm.web.cern.ch/cmswbm/cmsdb/servlet/TriggerRates Check the instant trigger status, including rate plot, configuration Can be used for historical values (old runs) Pick a run (by default last or ongoing run) Basic variables Select different contributions to trigger plot from this table To be used : Check the current or past trigger configurations (for the current run or any old one)

  8. Central tools (III): Runtime Summary https://cmswbm.web.cern.ch/cmswbm/cmsdb/servlet/FillSummary For a specific LHC fill, it provides details and statistics about Runtime quality To be used : Check in detail the reasons of downtime for a particular LHC period

  9. Central tools (IV): CMS Page Zero https://cmswbm.web.cern.ch/cmswbm/cmsdb/servlet/PageZero Overview of CMS status To be used : Overview of current CMS conditions And many other tools can be used to retrieve information

  10. How to track DT status? https://cmswbm.web.cern.ch/cmswbm/cmsdb/servlet/LastValue • From central services: • Some DT variables monitorized via LastValue tool • (last stored value by DCS on the omds DB). It provides the current status of the detector. • Very useful to check current (and historic) status of detector from outside P5 HV, LV, gas, PADCs To be used : Check current HV / I or gas conditions Retrieve old status of these variables

  11. How to track DT status? 2) With specific tools developed for DTs: https://cmswbm.web.cern.ch/cmswbm/cmsdb/servlet/DTSummary HV diagnosis & monitor DT run summary DT plot tool

  12. DT Run Summary Extension of the central RunSummary for DT specific information It can be accessed independently from the DT subdetector side, and it’s also linked inside the general RunSummary Select a particular run A group of runs with certain features Or a list with the last runs with DTs To be used : DT part of Global RunSummary: used to check DT configuration and conditions of a run.

  13. DT Run Summary Downtime statistics for the Lumi section associated to this run Configuration keys for the selected run (DAQ, Trigger, MC...) ROS & DDU status saved by DAQ (every 2 minutes) are registered List of errors at the beginning and end of the run

  14. DT Run Summary List of CCB errors during the run Links to DCS LastValue for the start and stop of run times (“Snapshots” of detector statuses at those times) List 10 previous and 10 latter runs

  15. DT Plot tool • Tool DT-related variables. For the time being: • High Voltage • Low Voltage • Trigger SC variables • (... more in the future) To be used : Retrieve historical values of these variables

  16. DT PageZero Overview of full DT detector as registered in the DB Still a *very* preliminary version... Autorefresh period https://cmswbm.web.cern.ch/cmswbm/cmsdb/servlet/DTPageZero Last 10 runs with DT HV/LV status Links to LastValue tool ROS/DDU errors in last run Links to ROS/DDU monitor pages MC status and CCB errors Link to Dashboard Trigger Sector Collector status Link to Trigger Supervisor DT cell To be used : First glimpse of DT status Gateway to the rest of control / monitor tools

  17. DT HV monitoring Tool to debug HV behaviour (mostly for experts) Dedicated analysis table in DB continuously running: currents in all channels are processed, and a flag is assigned to each HV channel, depending on on/off status, number of spikes (OvC), trips, etc. To be used : Track long term HV behaviour of DT chambers Snapshot of HV status corresponding to last 48 hours (historical snapshots can be obtained)

  18. DT HV monitoring For any selected chamber, a table with all channels status is shown Direct link to DT Plot Tool Table with historic values of HV diagnosis (all OvCs, all trips, all OFF periods for a given channel on a single table)

  19. Summary • WBM is a very useful tool for the monitoring of our detector (it is indeed *THE* official tool maintained by the CMS community). • Tools under development, changes are frequent. Stay tuned and check twiki for changes • General twiki • DT twiki • Shifters are key users of WBM, any improvement, suggestion, bug, etc you notice, let me/us know. • Feel free to play with these and any other tools, and provide feedback. https://twiki.cern.ch/twiki/bin/view/CMS/OnlineWBWebBasedMonitoring https://twiki.cern.ch/twiki/bin/view/CMS/DTWebBasedMonitoringServices