corey.gray@LIGO.ORG - posted 02:26, Sunday 10 November 2019 (53129)
Locking Notes: 6 Locks, 1 Alignment, & Almost 3hrs Needed
Summary: Manual Intervention for: 1st two locks (i.e. Green Arms for Lock #2), and Initial Alignment after Lock #4.
Somewhat similar to last night, H1 had a lockloss close to the shift change at midnight! With the 6 Locks, & an Initial Alignment, it took just about 3hrs to get H1 back up to OBSERVING, following the new Operator Intervention protocl (DCC#T1900725).
Notes On Operator Intervention & Locking:
- 7:26 lockloss!
- LOCK#1 7:27 - 7:43 : see Cheryl logs.
- LOCK#2 7:46 - 8:16
- Green arms: see Cheryl's log (sounds like ETMx/y & TMSx/y were tweaked)
- 7:57 I took over after Cheryl had both green arms locked.
- DRMI: Needed guardian to lock PRMI
- Lockloss #1 at ENGAGE_ASC_FOR_FULL_IFO
- LOCK#3 8:18 - 8:40
- DRMI: Needed guardian to lock PRMI
- Lockloss #2 at ENGAGE_ASC_FOR_FULL_IFO
- LOCK#4 8:42 -8:57
- Lockloss #3 at ENGAGE_ASC_FOR_FULL_IFO
- Will Run Initial Alignment according to Procedure!!!
- 9:00-9:20 Initial Alignment run
- LOCK#5 9:21- 9:48
- DRMI: Needed guardian to lock PRMI
- Lockloss at INCREASE_POWER
- LOCK#6 9:50 - 10:21
- 10:21 OBSERVING!