TITLE: 12/13 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:

IFO is in IDLE for Planned Engineering

TLDR - Last few big remaining lock health checks were successfully done.

First, initial alignment was ran successfully and automatically. 

We then started our day with 5 lock steps we wanted to confirm as working in the case that we could not fully lock:

• ISS Second Loop
  • Confirmed working by misaligning PRM and taking LASER_POWER to 62W and then closing the ISS Second Loop. Ryan S and I did this successfully.
• Lownoise ESD Transition
• Lownnoise Coil Driver States
• OMC_Whitening
• Laser Noise Suppression

To get around SRC1 P/Y instability, that would take time we don't have to fix, we locked while manually touching SRM at different times, notably: DRMI_LOCKED_CHECK_ASC, PREP_ASC_FOR_FULL_IFO, MOVE_SPOTS. However, after not being able to get past MOVE_SPOTS - couldn't keep RFPOP90 low enough with SRM touches, we tried a different method to get over the remaining checks suggested by Jenne:

1. Stop at 25W, touch SRM (counts on H1:LSC-POPAIR_B_RF90_I_NORM_MON good if under 12)
2. Manual to Lownoise Coil Drivers - Successful.
3. Auto until LOWNOISE_ESD_ETMX - Successful.
4. Manual to OMC Whitening, damp violins - Successful. Tony Damped violins.
5. Manual to Laser Noise Suppression - Mostly successful - Ryan S took care of this with advice from Keita about the scaling of the IMC_REFL and LSC_REFL IN1/2 and Fast Gain Servo Gains.

For a very comprehensive summary of locking progress, check out Ryan S's Wonderful Alog 88498.

Lock Acquisitions:

1. Lockloss due to SRC1 P/Y at Prep_ASC_FOR_FULL_IFO. SRM railed prior.
2. Lockloss due to Technical Cleaning at HAM2. HAM2 WD Tripped. Cleaning stopped after this.
3. Lockloss due to failed SRM adaptation (with ops acting as SRC1) at MOVE_SPOTS
4. Lockloss at Laser Noise Suppression upon activation of IMC_REFL Fast Gain at 25W
5. Lockloss at Laser Noise Suppression upon activation of IMC_REFL Fast Gain at 25W - though this time we confirmed it was likely the fast gain since Keita and Ryan S stepped through the state with gains scaled to 25W.

Meanwhile,

• Technical cleaning was started at HAM1/HAM2 (but unknown if completed since after a WD trip, they stopped due to locking).
• HAM1 Cleanroom was turned on and prepped for Monday Vent (alog 88501)
• GV5 and 7 Hard-closed (alog 88499)
• HAM7 HV Turned off (alog 88497)
• HAM7 OPO work is way underway, with OPO in but not fully installed.

LOG: