Managed by UT-Battelle for the Department of Energy Loss Viewer 2 - XAL application Alexander Zhukov SNS

2Managed by UT-Battelle for the Department of Energy Presentation_name BLMs at SNS BLM system is a crucial part of MPS – the last line of defense against uncontrolled beam loss Total number > 360! How we use BLMs 1.Prevent instant loss high power 2.Limit activation 3.Tune the machine 4.Measure residual activation during down time 5.Measure “intentional loss”

3Managed by UT-Battelle for the Department of Energy What are operator/physicist requirements? Presentation_name Overall bar-plot view of the whole machine BLM must be labeled on bar-plot with its name (not some number) MPS Limits Different normalizations (over beam charge, limit etc) Export losses to a file IOC software is hard to change due to formal administrative procedures History in some form

4Managed by UT-Battelle for the Department of Energy LossViewer2 application Presentation_name Default view of the whole machine. Red bars are showing limits, blue bars ICs and green ones NDs. The label color reflects detector status (e.g. yellow means signal is lower than noise level). This is the main application to keep eye on losses in SNS Control Room. Client side - no IOC modifications XAL application shares common LAF with other apps Standard XAL optics file Configurable detector sets (D’nD) JFreechart for plotting Axis dedicated to detector type Show/hide button for limits

5Managed by UT-Battelle for the Department of Energy Table pane and Drag’n’Drop Presentation_name Table pane for selection and details Plot pane

6Managed by UT-Battelle for the Department of Energy Dynamic table view Presentation_name

7Managed by UT-Battelle for the Department of Energy Normalizations Presentation_name Normalizations can be reasonably combined (e.g. charge and distance) User can select to use rolling average instead of signal itself

8Managed by UT-Battelle for the Department of Energy Weighed history Presentation_name

9Managed by UT-Battelle for the Department of Energy Waterfall plot Presentation_name Custom widget not Jfreechart

10Managed by UT-Battelle for the Department of Energy MPS limits for RTBT Presentation_name Limit selection startegy

11Managed by UT-Battelle for the Department of Energy BLM statistics Presentation_name XAL service collects data into ORACLE Web application loads it and generates report Constant time for generating report regardless time period covered by report less than 15 seconds Data available since Jan 2007 Time resolution one minute History plot available as well

12Managed by UT-Battelle for the Department of Energy Summary  LossViewer2 is an XAL application that displays losses in different forms  Good example of using XAL framework  Currently it is one of the most used applications in Control Room  Satisfies (more or less) both physicists and operators Presentation_name