TITLE: 08/24 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: None
SHIFT SUMMARY: Currently relocking and at MOVE_SPOTS. Max power is currently 61W(in actuality we are getting 60.8W out) in lsc_params in the hopes of avoiding the new PI. High winds today made locking hard, but we finally were able to get into NLN for an hour, and we were able to take (unthermalized) calibration measurements(79676), as well as figure out where the new PI is from and started trying to update the camera offsets. While trying to run the script that checks for the best camera offset locations, we lost lock, and I have been trying to get us relocked since then. We kept having locklosses in the middle states (~200-420s), and this last time Sheila recommeded fixing alignment by sitting in OFFLOAD_DRMI_ASC and adjusting SRM and PRM to raise POP18 and lower POP90 (altough I mostly focused on raising POP18), and adjusting it seems to have helped us get part this trouble area. Also, OMC_LOCK has been having a little trouble locking the cavity, but it will eventually catch on its own. For tonight, I am setting H1_MANAGER to LOW_NOISE, but leaving IFO_NOTIFY off.
LOG:
23:30 Just lost lock from LOWNOISE_ASC
00:59 NOMINAL_LOW_NOISE
01:06 Went to NLN_CAL_MEAS to run calibration
01:35 Calibration measurements finished, went back to NLN_CAL_MEAS
02:00 Lockloss
02:13 Lockloss from ACQUIRE_DRMI_1F
02:24 Lockloss from CHECK_MICH_FRINGES
02:26 Started an initial alignment
03:05 Initial alignment done, relocking
03:20 Lockloss from RESONANCE
03:50 Lockloss from CARM_150_PICOMETERS
04:01 Lockloss from RESONANCE
04:13 Lockloss from CARM_TO_REFL
04:22 Lockloss from ENGAGE_DRMI_ASC
- Starting an initial alignment
04:41 Initial alignment done, relocking
04:53-04:58 Sat in OFFLOAD_DRMI_ASC and adjusted SRM and PRM to raise POP18