corey.gray@LIGO.ORG - posted 01:39, Thursday 02 May 2019 (48918)
8:31 Back To OBSERVING
Notes:
Out of Observing for just under 2-hrs. Lockloss covered shift change/handoff. Here are locking notes:
- 7:00 ALSy not locking & also noticed high ALS polarizations
- 7:15-7:26 Doing best to lower polarizations for alsy & alsx (see earlier alog).
- 7:37 Return to Locking
- IR Not Found on first attempt.
- PRMI was a bit off, but once locked (I tweaked BS in yaw a couple of clicks to help lock) took POP90 up to 73 (from the paltry 40s it was at)
- Minor tweaking of PRM & SRM at OFFLOAD_DRMI_ASC to minimize POP90 & maximize POP18.
- 8:29 Made it to NLN w/ no issues.
- Had a high-precision SDF diff for PSLISS (channel H1:PSL-ISS_REFSIGNAL)----> ACCEPTED it.
- 8:32 OBSERVING