Reports until 17:52, Thursday 28 February 2019
H1 ISC
jenne.driggers@LIGO.ORG - posted 17:52, Thursday 28 February 2019 (47203)
ISCT1 ALS beatnotes aligned to new spot positions

While TJ was doing initial alignment today, after the green arms had converged, I ensured that PR3 was in the new position that we've been using the last few days, and aligned the beatnotes on ISCT1.  I only got COMM to about -3dBm (it used to be more like +6 dBm), but since that's enough, I didn't take a lot of time to try to eek out more.  Diff is now about -6 dBm, rather than the previous -12 dBm. 


Also today, I put the turn-off of the ADS loops into NLN_CAL_MEAS, since I killed the lock earlier today by forgetting to turn off those loops before doing some calibration actuator measurements (and we almost killed the lock again by doing some noise budget injections).  So, now if we're going to do any injections that might drown out the ADS dither lines, we should go to NLN_CAL_MEAS, and it'll take care of the ADS.


Also, also, I flipped the demod phases of 3/6 of the ADS loops, so that all of the ADS DOF gains are positive.  This has been accepted in SDF and put into the guardian.