Reports until 17:10, Monday 08 October 2018
H1 ISC
jenne.driggers@LIGO.ORG - posted 17:10, Monday 08 October 2018 (44417)
PRMI held lock while SRM flashing

This is just an alog to record the time that this happened, but when we tried to transition DRMI to 3f, the SRCL input matrix element must not have gotten written correctly, which resulted in a PRMI lock with SRM swinging.  We were able to hold the PRMI lock for about 90 seconds while the SRM was flashing before PRMI broke and we reacquired regular DRMI. 

What this means is that we do have a scenario and set of parameters where we should be able to use to perhaps get the PRMI to DRMI transition working again. We've been struggling since the end of O2 with this, since PRMI always seems to break lock when the SRM is brought back into alignment.

The times are roughly 1223078480 - 1223078570.