TITLE: 02/20 OWL Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: 
INCOMING OPERATOR: TJ
SHIFT SUMMARY:

Decent shift up until the latter half of the shift with a couple of PSL trips (see earlier alog).

LOG:

• 8:06 5.4 EQ in Peru seen on USGS
• 9:37 Lockloss (for 24+hr lock) No observable culprit
  • Tweaked ETMs & also TMSx/y because arms were at .9 & .8 respectively
  • 10:09 OBSERVING
• 13:01 H1 Lockloss:  1-4 flow---> Glitch in laser head flow sensors; labeling as CORRECTIVE MAINTENANCE
  • Called Jason & granted remote access to bring PSL back.
  • 13:58 Returned to locking
  • PSLISS SDF DIFFS FOR REF SIGNAL:   -1.099 --> -1.079  ACCEPTED (with Jason Approval)
  • 14:31 Back to OBSERVING!
• 14:43 H1 Lockloss due to PSL again.
  • Got Jason on the phone to help again.
  • Had to top off Crystal Chiller again to 350mL this time
  • Jason said to give him a call if we get another Sensor trip (hopefully we don't get one *knock on wood*)
  • 15:40 Back to LOCK ACQUISITION---only minor tweaks in PRMI but zooming through ISC_LOCK
  • Handing off to TJ
    • Had a lockloss during latter states of ISC_LOCK---saw the violin modes ringing up (TJ also noticed that the ETMx RMS watchdog tripped a few minutes before all of this business---that's a new one on me.)  Good luck, TJ!