cheryl.vorvick@LIGO.ORG - posted 06:03, Sunday 07 May 2017 - last comment - 13:10, Friday 26 May 2017(36071)
Ops Owl Mid-shift Update
H1 Status:
- 12:03UTC - L1 out of lock, I took H1 to commissioning to move IM1, IM2, IM3 yaw for range
- 12:33UTC - R wave from M5.0 in Indonesia arrives
- 12:47UTC - H1 back in Observe
- as of 12:54UTC - 3-10Hz ground motion still elevated
SITE:
- 12:43UTC - Bubba calls, says the Hanford Fire Department was here at Mid-Y and they say they were inside the building
- I was not aware of any activity
Patrick Kiwamu and I reversed these IM moves this morning. It looks like after this move the recycling gain dropped by about 2%, the reflected power dropped by about 13% (which is not necessarily a bad thing), and for some reason MC2 trans sum became more noisy. I do not understand why MC2 trans sum would become more noise, the mode cleaner alignment didn't change during this time.
Right now we are having trouble locking because of low recycling gain, which is why we have reverted.