TITLE: 05/16 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
SHIFT SUMMARY:

Started Maintenance Recovery at about 1:53pmPT with (3) issues which made recovery tough, but help from Jeff & TJ we were able to get to NLN 342pmPT.

LOG:

• 1445 Magnetic Injection
• 1446 PI 24
• 1458 Forklifting around corner (tyler & christina)
• 1458 Wind Fence work (mitch)
  • Transitioned EY to "Wind Fence" mode
  • After lockloss took SEI_ENV to MAINTENANCE
• 1459 Lockloss
• 1508 Turbo pump famis at EX/MX/MY (jordan)
  • 1827-1852 Powering turbos off (jordan)
• 1510 Took ISC LOCK to IDLE & IMC_LOCK to OFFLINE
• 1519-1742 Turbo pump famis at LVEA (gerardo.janos)
• 1512 OBSERVATORY MODE to Preventative Maintenance
• 1523 Power Supply swap at RF rack prep:  ASC0, LSC0, OMC0 models stopped AND IO Chassis powered off (dave, jeff)
  • PSL OMC/FSS affected by RF
  • ISI CPS' watchdog trips in Corner due to timing
• 1525-1807 EY PCal (tony, jenny)
  • 1558 Laser HAZARD AND ALS laser was shuttered
  • 1807 Laser SAFE and ALS shutter OPENED.
• 1524-1615 EY cleaning (cindy, kim)
  • 1641-1849 lvea cleaning 
• 1528-1858 EY hepta pump (travis)
• 1530 Magnetometer & cable pulling around HAM7/sqz stuff (fil)
  • 1542 richard meeting fil
• 1532-1712 fss alignment at PSL (jason)
  • For restoring (after RF work), jason mentioned that autolockers didn't work for him
• 1551 Beckhoff work to "make screens green" (daniel)
• 1557-1847 FAMIS checks (soike)
• 1556 Access system work in lvea/Ham Shack (APS, richard)
  • 1615 2nd truck arrives
• 1608 HAM2/3/7/8 SEI meas (jim)
• 1600 First successful SNEWS alert test
• 1624 Beckhoff reboot (daniel)
  • 1702, 1704 more reboots
• 1640 EX fan check/changes (bubba)
  • 1710 Didn't notice anything on inspection, but will switch fans via FMCS
• 1643 Hanford fire inspection up/down arms; no bldg incursions (tyler)
• 1652 Lawn service contractor
• 1657-1715 Cosmic Ray set-up/checks (adrian)
• 1710 Noticed UNIFIRST card swipe in on camera
• 1719 Power Supply work for ISC C1 & C2 racks (marc.fernando)
• 1724 All corner ISI Watchdogs tripped due to CPS (due to power supply work?)
  • 1727 Jim going out to check---
• 1730 Dust Monitor #6 alarms
• 1742 EX getting accels working and packing up injection stuff (robert.anamaria)
• 1742 PSL (#102) dust alarm.
• 1809 EY Hartman laser powered on for Camilla (tony)
• 1816-1832 EX Hartman laser power on (Camilla)
• 1900 
• 1915 Beginning to restore from power supplies & DAQ restart (dave).
• 1917 HVAC at EX being shut down (robert)
• 1953 Beginning to Restore H1 after Tues Maintenance!
• 1953-1955 Dark Offset Script---reason for this was the Power Supply/RF rack/Slow Controls work on the ISC Racks during Maintenance (alog 69652) 
  • IMC Not Locking:  IMC could not lock after this (MC Trans was noticeably off in yaw); This was due to the Power Supply/Front End/rack work.  To get this back, we adjusted the PSL PZTs while watching the MC2 Trans & IM4 Trans channels.
    • REASON FOR ISSUE:  Powering off racks during Power Supply swap caused PZT misalignment
  • Y-Arm Green Alignment Issue:  With an UNLOCKED Y-Arm, Flashes just couldn't get above a certain level via ETMy & TMSy.  Took the NON-STANDARD step of touching the ITMy--Because all ISIs had an ISI CPS watchdog trip due to the ISI's using Timing from the ISC.  ITMy yaw slider was moved to -13.7 (from -12.8).
    • REASON FOR ISSUE: ISI Watchdog Trip causing small misalignmen t for ITMy
  • Initial Alignment X-Arm Issue during Input Align:  For Initial Alignment's Input Align step, could not lock the X-arm.  It was noticed the +21 Whitening gain [H1:LSC-POP_A_RF45_WHITEN_GAIN] was the issue with the X-Arm locking---This was because of the Dark Offset script running earlier (that was done with the standard +15 Whitening gain---which is used for everything EXCEPT Initial Alignment!).  And so H1:LSC-POP_A_RF45_I_OFFSET was changed from -32.677 to -70 while zeroing H1:LSC-POP_A_RF45_I_ERR_DQ while watching it on ndscope. 
    • REASON FOR ISSUE: Dark offsets & Whitening gain being different for Initial Alignment vs all other states! 
  • Separate NOTE:  For next LockLoss, want to see if the IMC remains locked (due to guardian change made by TJ).
• 2132-2310 Squeezer local hazard (camilla, naoki, vicky)
• 2242 NOMINAL LOW NOISE, but no Squeezing.