edmond.merilh@LIGO.ORG - posted 03:53, Tuesday 20 December 2016 (32726)
Mid-Shift Summary
- Locking has been difficult.
- Mode Cleaner dificulty staying locked. Cleared History. re-locked and let loops converge for about 10 minutes.
- FSS oscillating upon lockloss (mulypile times). Moving fast gain to a low setting and then back up to 9 (original setting)
- re-aligned arms in Green. Moved TMSX .4µrads. Still not getting to 1 normalized. Y looks a lot better.
- having to "massage" every DRMI lock attempt at the fringes or prmi level.
- first successfull DRMI lock ended at DRMI_ASC_OFFLOAD
- Second successful DRMI lock ended at SWITCH_TO_QPDS
- Third tim the Charm: NLN reached @10:40:24UTC.
- Accepted 2 SDF diffs (below)
- Intention bit to UNDISTURBED @ 10:44:24UTC
- 11:21 I mode 27 ringing up. Flipped sign on phase.
- 3:30PST Terry called me to inform that Hanford put out an advisory for a two hour delay due to icy road conditions
- 11:51UTC EY Glitch
Images attached to this report
