cheryl.vorvick@LIGO.ORG - posted 13:55, Monday 08 June 2015 - last comment - 14:56, Monday 08 June 2015(18992)
Glitching - coincides with cleaning - Robert investigating.
Glitches have been showing up in the IFO range since the lock that started at about 17:00UTC, and the rate of glitches has been about the same throughout the morning.
The crew took a break at 11:00 local time, and all glitches stopped. I verified that no one in the CR had made a change. Glitches resumed about 40 minutes later, which coincides with the crew starting to clean again.
Bubba called when the crew restarted the cleaning.
20:22:00 UTC, beam tube cleaning starts.
The first IFO glitch in this lock happens within one minute.
Bubba has had the crew mark where they were working at the time.
Robert is heading down to investigate.
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Glitch at 17:45:25UTC - H1:ASC-Y_TR_A_NSUM_OUT_DQ and H1:ASC-X_TR_A_NSUM_OUT_DQ gltich first.
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