Reports until 03:35, Thursday 13 July 2023
H1 General
anthony.sanchez@LIGO.ORG - posted 03:35, Thursday 13 July 2023 (71289)
Thursday Ops Owl Mid shift Update!

Lockloss at 8:09 UTC

Started the relocking process without an initial alignment.
Reached CHECK_VIOLINS_BEFORE_POWER UP at 846 UTC
I then held there and turned on the Damping at 2Ws for about 2-3 minutes.
I then started the powerup process while Elenna and Rahul were watching the Violins.
They started to se a few modes increase during power up around 25W. I then finnally turned off the Damping at 2W.

9:19 UTC We reached OMC_WHITENING.
We Divided the VIOLIN DAMPING amongst our selves and started to carefully increase gains incrementally to their maximums.
The DARM looked very bad during the entire duration of OMC whitening due to what Elenna describes as jitter.

9:58 UTC NOMINAL_LOW_NOISE was reached. I think this is a fairly quick transition though OMC_WHITENING. 
H1: LSC-MICHFF SDF Diff was accepted get into observing.
10:03 Observing was reached again.

DARM Looks better for the most part but it still has moments of "jitter" like seen in the picture.
Also the OAF_RANGE_RLP_1_OUT16 on the BLRMS Moniter looks strange as well.



 

Images attached to this report