Reports until 17:59, Tuesday 15 January 2019
H1 SUS
betsy.weaver@LIGO.ORG - posted 17:59, Tuesday 15 January 2019 (46451)
ETMY Charge Long Trend

I noticed that the long trend data of ETMY charge has not been plotted and posted since October.  Both ETMs have had charge data collected in Dec, but ETMY data has been throwing errors in the Long_Trend.m matlab plotting script.  Since Georgia was the last to have successfully plotted the data, I solicited her for a hint.  She reports that in October, she had to create a separate script which had the LR data removed in order to get it to run successfully.

So, for the future, in order to plot the longer trend data of charge use the following scripts in /ligo/svncommon/SusSVN/sus/trunk/QUAD/Common/Scripts:

for ETMX use the normal Long_Trend.m

for ETMY use Long_Trend_ETMY_LHO.m

(I've updated the wiki page for this https://awiki.ligo-wa.caltech.edu/wiki/ESD_OPLEV_Charge)

 

Attached is the plot with the new data set measured in Dec.  Note, charge on ETMY was up near ~50V before we vented Nov 13, 2018 in an to attempt to fix the LR ESD connection.  The attempt was unsuccessful, however we managed to blow off some of the accumulated charge before closing again.  So, there is that.

Images attached to this report