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Reports until 13:31, Thursday 26 January 2017
H1 SUS
betsy.weaver@LIGO.ORG - posted 13:31, Thursday 26 January 2017 (33662)
ITMs and BS bouncing back up after temp adjustments last week

Attached is a 30 day trend of the ITMs and BS SUS vertical and Pitch drifts, along with the BSC3 external temp sensor.  Recall that the LVEA temperature control was a bit wild for a few weeks during extreme cold in our region which ended up apparently raising the temp as seen by the test mass suspensions.  This was remedied around 6 days ago and the BSC3 temp channel reports a cooling trend.  Subsequently, the TM and BS suspensions have been drifting back up.

 

Ignore the first channel on the plot, the BSC1 external temp sensor jumps around with offsets periodically for some unknown reason.

Images attached to this report
Displaying report 1-1 of 1.