TITLE: 07/31 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
SHIFT SUMMARY: Quiet evening up until a Dolphin glitch caused a lockloss. Dave assisted in CDS recovery then Oli and I recovered the IFO.

• 0550 Lockloss caused by Dolphin glitch: alog 71829
• 0648 CDS recovery complete, starting IFO recovery
  • Noticed no light on ALS or AS AIR cameras, decided to revert optics sliders to position of last initial alignment (1374780849)
  • Flashes now on cameras, alignment still looks not great
  • Tried just aligning ALS using ITMs/ETMs/TMSs and quickly realized that wwasn't working
  • Trending other optics to check for movement; saw via oplev that PR3 had moved significantly
  • Brought PR3 back (mostly a pitch adjustment); ALS flashes now much better
  • Trying manual initial alignment then will see what gives us trouble
  • Initial alignment working well up until SRC
  • Trending SR3 oplev shows it had moved as well (mostly in yaw)
  • Brought SR3 back, SRC was able to lock
• 0846 Initial alignment complete, starting lock acquisition

Handing off fully to Oli for the rest of the night; IFO is currently locking DRMI.

LOG:

No log for this shift.