TITLE: 05/16 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Commissioning
SHIFT SUMMARY:
Main Notes:
- PEM injections/SQZ work early on in the day
- Couple locklosses - both due to unknown reasons
- Currently sitting at MAX_POWER on the way back to NLN, I have set the OBSERVING bit to AUTO so it should catch when the SDFs are cleared
- Lock #1:
- LOCKLOSS @ 23:31 UTC - reason currently unknown
- Lock #2:
- Acquired NLN @ 00:52, In OBSERVING @ 4:02
- SQZ/PEM injections ongoing
- When trying to transition to OBSERVE, I ran into some SDF diffs for CALEY - accepting, Tagging CAL
- LOCKLOSS @ 05:38 - DCPD saturation, reason unknown
- Lock #3:
- Automation failed 3x trying to ACQUIRE_PRMI, would catch for a bit then fail when the ASC engages, intervened next time around and moved PRM ~17 microradians in Y (353.3 --> 336.6) which allowed it to catch
- INCREASE FLASHES on X seems to work good, but sometimes fails to offload when flashes look good enough to catch
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 02:30 | PCAL | Tony | PCAL Lab | Y (LOCAL) | Measurements | 02:45 |
| 01:15 | GAINZ | Camilla + gang | X arm | N | Brisk 10k | 02:12 |
These PCALY SDF differences are understood (and it didn't matter whether they were accepted or reverted) -- before I left last night, I was setting up parameters for getting thermalization lines at lower frequency, as desired as a result of LHO:69593. When I left, I restored the amplitude of these oscillators to zero, so no new excitations / calibration lines went in to the detector. Thanks for aLOGging!