sheila.dwyer@LIGO.ORG - posted 17:11, Friday 28 April 2017 - last comment - 18:35, Friday 28 April 2017(35887)
ETMX oplev power adjusted
We noticed on today's Hveto page that ETMX oplev is glitching. TJ and I went out and I turned the power knob down by about 1/8th of a turn. This reduced the output power by about 1%, and so far we don't have glitches.
Images attached to this report
Comments related to this report
After an hour it became clear that that power setting was actually worse, so I went back to the end station and turned the power up again at about 1 UTC. The glitching seems better in the first half hour at this higher power, but we will have to wait longer to see if it is really better. The attached screenshot shows the interferometer build up (which can explain some of the changes in the oplev sum) as well as the oplev sum for the past 5 hours.
Hopefully this means that we will be OK with glitches over the weekend.
Images attached to this comment
