TITLE:  12/6 DAY Shift:  16:00-00:00UTC (08:00-16:00PDT), all times posted in UTC     

STATE of H1:   Lock Acquitistion

Incoming Operator:  Cheryl

Support:  None

Quick Summary:

Eerily similar to my shift yesterday:  First half H1 locked, and then 2nd half unlocked.  This time there was winds which forced me to not attempt locking.  A good note (highlighted in GREEN below) is that I was able to (1) get through an alignment, (2) have decent looking DRMI locking/flashing, & (3) able to lock PRMI (although it wasn't needed since alignment still looked decent).  Still NLN elludes me (seems like I've not taken H1 to NLN since early October!!)  :(

Shift Log:

• 16:48 LY Beam Manifold Ion Pump went RED on overview (no alarms)
• 19:15 - 22:30 wind avg speeds reach above 20mph.
• 20:20  Lockloss (winds picking up & useism high as range died at the end of that lock)
• 22:30 - 22:50 Initial Alignment.  Notes Below:
  • ALSy was better, but had to offload by hand (i.e. tweak pit & yaw of ETMy)
  • Input Align:  X-arm finally locked!  (because seismically quieter?).  Offloaded IM4 & PR2...but saw that IM4 seemed to get pitch & yaw values after they were offloaded to zero.   (is that normal?  I did not offload by hand)
  • SRC Broke lock after 2min while waiting for control signals to converge; but finally able to run OFFLOAD
  • Alignment went well!
• 22:50 Lock acquisition:  finally made it past CHECK_IR!  DRMI AS port flashing look GOOD with decent flashing for POP 18 & 90.  But after 11min, Guardian went DOWN.  :-/  Looks like it's due to ETMx ringing up (had a peak to peak of 10,000nm).  Cleared this up by switching to the 90mHz Blend briefly for the X-axis, and then switching back to the 45mHz Blend.  
• FIND_IR takes on the order of 2-3min
• 23:33 Attempt Lock PRMI (after 4min PRMI locked!).  Only made minor changes to BS/PRM:  POP18 was at 124 & POP90 was at 190.  Went back to DRMI locking....actually, not clear of how to transition back.  Do I take ISC LOCK to AUTO and then request DRMI?  I was a little confused.  about that.
• It looked like a PRMI locked, and then HAM5 ISI & SRM WD tripped....did I not restore DRMI locking correctly??
• Resetting WDs
• PRMI relocked again (!).  Not sure if I recovered from PRMI....anyway, Cheryl is starting from scratch with this alignment (hopefully it locks up with this pesky useism!)