Reports until 00:53, Sunday 05 May 2019
LHO General (ISC)
corey.gray@LIGO.ORG - posted 00:53, Sunday 05 May 2019 - last comment - 02:05, Sunday 05 May 2019(48991)
Local EQ Recovery: Two Consecutive locklosses during ENGAGE ASC step. :-/

First attempt at locking had a lockloss at ENGAGE_ASC_FOR_FULL_IFO (where, POP90 started to increase & then a lockloss).

Giving it another try and watching during the step noted above.  If it drops out, will try an alignment.

Comments related to this report
corey.gray@LIGO.ORG - 01:05, Sunday 05 May 2019 (48992)
Link

Snapshot of strip tool. 

Images attached to this comment
corey.gray@LIGO.ORG - 01:49, Sunday 05 May 2019 (48993)ISC
Link

First Locking Attempt Post-Initial_Alignment

  • POP90 was a little lower than previous two locks.
  • Paused at PREP_ASC_FOR_FULL_IFO
    • PRC GAIN was lower than previous locks, but was getting noisier during this pause
  • went to ENGAGE_ASC_FOR_FULL_IFO (where we dropped out of lock previous two times)
    • PRC Gain (& most other LSC signals on striptool) immediately dropped, and 
    • LOCKLOSS.
  • Attempting to another lock...will try to quickly go through PREP_ASC_FOR_FULL_IFO without a pause....but we'll see.
  • Marking OBSERVATORY MODE to CORRECTIVE_MAINTENANCE
  • Other note is interferometer continues to not FIND_IR on its own anymore.
corey.gray@LIGO.ORG - 02:05, Sunday 05 May 2019 (48994)
Link

  • 9:03 Another lockloss at ENGAGE_ASC...
  • I'm going to go make breakfast & revisit in a bit......