nutsinee.kijbunchoo@LIGO.ORG - posted 02:00, Saturday 03 December 2016 - last comment - 06:54, Saturday 03 December 2016(32137)
6.0M earthquake in Alaska
09:53 UTC Seeing that Terramon predicted 6.7 um/s I hurried and swithed SEI config to EARTH_QUAKE_V2 as the earthquake arrvied on the FOM. However, that was before I realized that what I saw was already the peak at ~1um/s and it was already turning back down. We could have ridden through this earthquake. Livingston is also down.
After the lockloss ISI ST2 configs went back to SC_B. I'm switching back to SC_A.
And I got this EZCA connection error that comes and goes but didn't seem to effect the locking. Still struggling to lock as of now. Kept losing after Turn on BS ST2.
Got pass DRMI, but then lost lock at CARM_15PM. Somewhere in between fast shutter thing tripped HAM6 ISI.
Still losing lock at DRMI_LOCKED. I don't know why would SR2 be moving so much. Because PRMI and DRMI was able to locked with okay counts I don't really believe that it needs an initial alignment. I'm going to try one real quick anyway.
If that doesn't help I'm going to try turn off SRC2 loop during next DRMI_LOCKED.I briefly went through Jenne's troubleshooting document. I'll be watching out for ASC error signal next time.I zeroed all the SRC error signals before engaging DRMI ASC, following Jenne's Troubleshoot document. Finally was able to move on. Sorry... should have thought of it much sooner.
Back to Observe again at 14:52 UTC. I accepted the SDF ETMX bounce mode damping gain. Bounce mode is still high, but it's slowly damping. I didn't increase the gains.