Wir schaffen Wissen – heute für morgen Paul Scherrer Institut Controls tools for operation management at the Swiss Light Source at the EPICS collaboration spring meeting 2010 in Aix-en-Provence Andreas Lüdeke Paul Scherrer Institut

Operation Management: Beam Failure Analysis Event : defined beam distortion → “bad lifetime”, “downtime” Infos : related data of event → logbook entries, alarms, archived data Cause : failure category of event → what caused it, where was it caused Beam lifetime Storage ring beam current 50 mA limit 4 hour limit Time bad lifetimedowntime Page 2 of 122.June.2010Andreas Luedeke

Operation Management: Beam Failure Statistics Page 3 of 122.June.2010Andreas Luedeke

Operation Management: Failure Reports What type of failures happened? How often did they occur? How long where they? Example: show me all downtime caused by magnet power supplies Page 4 of 122.June.2010Andreas Luedeke

Controls Tools needed for Failure Analysis What controls tools are needed to do the job?  Automatic beam event detection  Tools to analyse beam events  Means to categorize beam events by their cause  Database of beam events  Tools to create statistics, reports, run overviews,... Develop an “Operation event logging system”  Event Logger  Defining events by rules, based on process variables  Automatic recording of events  Automatic collection of a set of infos  Event Browser: provide access to event data  Event Cause: assignment of causes to an event  Event Database: Automated statistics, User-run overviews,... Page 5 of 122.June.2010Andreas Luedeke

2.June.2010Andreas Luedeke The Operation Event Logging System Page 6 of 122.June.2010Andreas Luedeke

Event Logger: “Event” creation State diagram for each event  events depend on shift type (EPICS DB stores yearly schedule in array)  events may have precedence ordering (e.g. downtime stops lifetime event) State machine: event logging process (tcl/tk) monitored by cronjob All configuration and event data stored in oracle database Event active store start-date and shift-type Event inactive Event entry ● insert event entry ● evaluate event infos ● insert event infos Start-rule “true” for t > t(start-delay) Stop-rule “true” for t > t(stop-delay) Event of precedence activated Change of shift-type Page 7 of 122.June.2010Andreas Luedeke

Event Logger: “Info” creation The event data:  Shift summaries (electronic logbook)  Alarm lists  Selected signals from channel archiver (e.g. beam current for downtime) Create data references instead of copying data  No inconsistencies, safes bandwidth, no data conversion  Use of native application to view, export or extend data Data references as “Uniform Resource Locators” (URLs)  All data sources have to be accessible by a web browser  Electronic logbook → anyway  Alarmhandler → via oracle database table  Channel archiver → generic PSI web interface to channel archiver  Web interfaces have to support data selection by time range  URLs are easy to communicate: just copy links into your s! Page 8 of 122.June.2010Andreas Luedeke

Page 9 of 12 Channel Archiver Web Interface Web interface to channel archive - Features o Up to one 100 channels per plot o One interface to all channel archives - PHP function suite o Easy to extend o “oscilloscope view” of waveform data Full functionality in URLs - Define archive to read: DIRECTORY=/archiver-data/LT/index& - Define time range: startDate=05/18/2009&startTime=17:00& - Define channel list: NAMES=FRED:test\nTED:ai.RVAL& - Define axis for each channel TED:test=y2& Web interface to channel archive - Features o Up to one hundred channels per plot o Two Y-axis: linear/log, fixed range or auto-scale o One interface to all channel archives - Implemented as PHP function suite o Easy to extend o Full functionality interfaced in URLs! o Supports waveform “oscilloscope view” URL functionality - Define time range  startDate=09/11/2009& - Define channel list:  NAMES=FRED:test\nTED:ai.RVAL&  Define axis for each channel  TED:test=y2& 2.June.2010Andreas Luedeke

Page 10 of 12 Browser demo 2.June.2010Andreas Luedeke

Page 11 Acknowledgement  Archiver web interface:  Event logger, Alarmhandler web interface:  More details see PRST-AB EPAC'08 Special Edition:  A. Lüdeke: The Operation Event Logging System of the Swiss Light Source  Thank you for your attention!