Reports until 16:44, Sunday 19 November 2023
H1 General
oli.patane@LIGO.ORG - posted 16:44, Sunday 19 November 2023 (74296)
Ops DAY Shift End

RELOCKING
16:00UTC Detector relocking and at FIND_IR.

16:09 I started an Initial Alignment because we started getting stuck in the ACQUIRE_PRMI -> ACQUIRE_DRMI_1F -> ACQUIRE_PRMI cycle again
16:26 Initial Alignment completed

16:28 Lockloss at LOCKING_ALS
16:34 Lockloss at FIND_IR
16:46 Lockloss at CARM_OFFSET_REDUCTION
    - Starting at DHARD_WFS EX started saturating every few seconds, through DHARD_WFS, PARK_ALS_VCO, SHUTTER_ALS, and CARM_OFFSET_REDUCTION
    - 16:46:53 EY, IX, IY, PRM all also saturated, DRMI lost lock, and we went down.
16:50 Lockloss at FIND_IR
16:55 I took us to DOWN due to high winds and microseism

17:35 Tried relocking again
17:35 In LOCKING_ARMS_GREEN, Guardian ALS_XARM node in error
    
17:38 ALS_XARM trying to get to INCREASE_FLASHES but keeps jumping to FAULT
    - Errors PLL; PDH and Beat note strength
    - Node keeps falling into error
    - Tried lowering beatnote strength threshold but only worked for a bit before we lost lock
    - Happened June 29th (70951)

18:49 Lockloss at CARM_OFFSET_REDUCTION
19:05 Lockloss at CARM_OFFSET_REDUCTION, putting detector in DOWN

20:02 Trying relocking
20:56 NOMINAL_LOW_NOISE
21:01 Observing

21:33 Earthquake mode activated due to earthquake from Japan

21:51 Lockloss

RELOCKING
21:55 Starting an Initial Alignment
22:28 USERMSG: disabled pump iss after 10 locklosses. Reset SQZ-OPO_ISS_LIMITCOUNT to clear message.
    - Followed 73053, minus touching up the OPO temp, to fix and relock sqz
22:47 Initial Alignment finished, relocking
23:38 Observing