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Reports until 13:50, Tuesday 19 April 2016
H1 SEI
hugh.radkins@LIGO.ORG - posted 13:50, Tuesday 19 April 2016 (26655)
Maintenance Day BRSY--Works Pretty well

The automatic damping works and the BRS survives.

The attached 6 hours of trends show the BRSY rotation, and its rotational velocity in the bottom panels.  The upper panels display the Auto-damping turn on velocity and the DAMPBIT which indicates damping is on when high.

These traces show two periods where the damping was forced on by lowering the HIGHTHRESHOLD.  The damping is turned off 250 seconds after the velocity falls below the LOWTHRESHOLD.  The effectiveness of the damping is evident in the rotational angle and velocity peaks.

Further, in the middle time period, the cleaning crew entering the VEA sets off the Damping automatically and the amplitude and velocity are quickly reduced.

Also attached is the medm available from the Y-Arm ISI SITEMAP drop down.  I'll probably continue to tweek this so make suggestions if you see improvements.

Conclusion, things work pretty well, yeah!

Images attached to this report
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