TITLE: 06/03 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:
Just had another lockloss so I'm just putting the detector in IDLE for the night. I have a list of things from Elenna to check/try with relocking, but I won't be able to get to any of them before the end of my shift, so they can be checked tomorrow morning. This last lockloss was during OFFLOAD_DRMI_ASC while I was trying to adjust SRM, although I don't think I caused the lockloss? It took a while for DRMI to catch this time, so maybe running an initial alignment is warranted. The highest state we were able to get to today was LOWNOISE_LENGTH_CONTROL.
The list Elenna gave me is:
- Watch ADS for problems (we weren't seeing any ringing up, but ADS were taking more than 10 mins to converge in MOVE_SPOTS (84734)
- Check that CHARD Y gain goes to 300 at the end of MAX_POWER (once we are at 60W and ADS have converged) (84732)
- Watch for DHARD P oscillation during TRANSITION_FROM_ETMX (84736)
- Try to damp violins at full power (I put Rahul's new damping settings into lscparams for 2W (84720), so during damping at higher powers we will need to see whether the current settings or the 2W settings work best for those three modes) Tagging SUS, OPS Info
LOG:
23:00UTC Commissioning and sitting in POWER_10W
23:20 Started trying to increase power
01:49 Lockloss from LOWNOISE_LENGTH_CONTROL while sitting there running measurements
- Started a manual initial alignment
- Stopped at PRX_LOCKED, touched up PRM, then finished IA
- Stopped at OFFLOAD_DRMI_ASC, touched up SRM, then continued
- Lockloss in DRMI_TO_POP
- Probably due to DRMI alignment not being the greatest
- Stopped at OFFLOAD_DRMI_ASC, touched up SRM, SR2, and PRM, then continued
- Lockloss in LOWNOISE_ESD_ETMX due to a CHARD P ringup that started in TRANSITION_FROM_ETMX
- Lockloss from OFFLOAD_DRMI_ASC while I was trying to touch up alignment using SRM. Not sure if my fault?