Reports until 00:07, Wednesday 17 April 2024
H1 General
oli.patane@LIGO.ORG - posted 00:07, Wednesday 17 April 2024 (77235)
Ops EVE Shift End

TITLE: 04/17 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Aligning
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: The wind was really bad during my shift and caused the time between the 23:39 LL and NOMINAL_LOW_NOISE to be 3.75 hours. We had a second lockloss at 06:44UTC and just finished an initial alignment.
LOG:

23:00 Detector in NOMINAL_LOW_NOISE and troubleshooting going on wrt sqz

23:34 Into Observing

23:39 Lockloss

- Relocking -
23:57 Lockloss from AQUIRE_PRMI
23:59 Lockloss from LOCKING_ALS
00:00 Started Inital Alignment

00:20 DIAG_MAIN message that ALSY polarization is above 20%
    - I using Camilla's instructions(58773) to find the right screen, and went to follow the instructions there, but all I did was press ON and then press Restore like it said, but just by clicking those the ALSY polarization value went down to 7% and ALSX up to 12%, so without needing to adjust anything I pressed OFF.

00:22 Initial Alignment completed
00:40 Lockloss from ACQUIRE_DRMI_1F
00:43 Lockloss from FIND_IR
00:48 Lockloss from LOCKING_ALS
00:51 Lockloss from FIND_IR
    - Sitting in DOWN for a bit
01:00 Trying relocking again
01:07 Lockloss from ACQUIRE_DRMI_1F
01:10 Lockloss from LOCKING_ALS
    - Sitting in DOWN for a bit again
02:00 Trying to relock again again
    - Wind still > 30mph
02:14 Started another Initial Alignment
    - Went through CHECK_MICH_FRINGES and then ifo wanted to do CHECK_MICH_FRINGES again
02:40 Initial Alignment done
- Done relocking -

03:23 NOMINAL_LOW_NOISE
03:26 Observing

06:22 Lockloss

- Relocking -
06:44 I took us to initial alignment because we couldn't get past ACQUIRE_PRMI
07:00 Initial alignment done