Web Based Monitoring DT online shifter tutorial Jesús Puerta-Pelayo CIEMAT Muon_Barrel_Workshop_07/July/10

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 ● Core support team (technical support, common tools, maintenance) ● Subdetector experts ● Subdetector experts (development of detector-specific tools) ● Accesible from outside CERN network (CERN certificate)

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.

CMSWBM home & tools Sub- detector tools Central tools

Central tools (I): Run Summary 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 subdetector config)

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

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

Central tools (III): Runtime Summary 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

Central tools (IV): CMS Page Zero Overview of CMS status And many other tools can be used to retrieve information To be used : Overview of current CMS conditions

How to track DT status? 1)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

How to track DT status? 2) With specific tools developed for DTs: HV diagnosis & monitor HV diagnosis & monitor DT run summary DT run summary DT plot tool DT plot tool

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

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

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

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

DT PageZero Overview of full DT detector as registered in the DB Still a *very* preliminary version... Last 10 runs with DT ROS/DDU errors in last run Links to ROS/DDU monitor pages MC status and CCB errors Link to Dashboard Autorefresh period HV/LV status Links to LastValue tool 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

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. Snapshot of HV status corresponding to last 48 hours (historical snapshots can be obtained) To be used : Track long term HV behaviour of DT chambers

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

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.Summaryhttps://twiki.cern.ch/twiki/bin/view/CMS/OnlineWBWebBasedMonitoring