J. Kissel

I've made a second, better attempt at tracking the long-time-scale thermalization of the IFO for the first few hours of a nominal low noise stretch -- originally attempted in LHO aLOG 53824. 

The data analysis will take some time, but here're are the measurement details. (All times are UTC on 2019-Dec-17)

    21:22 Test Start
    21:23 All lines on at conservative amplitude, SEI conf = USEISM, with SEI DIFF ON
    21:24 Hit Nominal Low Noise, all lines visible in DELTAL_EXT
    21:26:(15-30) Accidental brief turn off of (specifically) DARM lines
    21:40 Begin increase in line strength, and turn OFF of SEI DIFF
    22:03 Increase in some PCALY line heights to increase coherence
    23:20 All lines OFF, test done.

Hopefully, with all the changes in the lines during the measurement, the only effect will be that the coherence in the transfer function improves with time. During today's measurement, the microseism was well above the 90th percentile, in the ~1 um/sec range, so the 15 - 50 Hz data was rather glitchy, full of scattering arches.

Here're the list of frequencies driven (exactly, in Hz, bold frequencies are standard calibration lines):
    freqlist_darmx = [5.625,    7.45,    9.1,   18.9]
    freqlist_pcalx = [  5.45,    5.8,   7.25,  7.625,    8.9,  9.275, 18.725,  19.1, 49.775]
    freqlist_pcaly = [17.100, 410.30, 1083.7, 23.525,   25.3,  30.85, 49.625, 84.65,161.625]

Script to turn on PCAL EXC lines:
    /ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O3/H1/Scripts/CALCS_FE/setup_sensingfunction_callinecombs.py

DTT template to turn on DARM EXC lines:
    /ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O3/H1/Measurements/FullIFOSensingTFs/2019-12-17_H1DARMEXC_SpringMonitoring.xml

(To turn off all the extra lines, I just hit Abort on the DTT template, and used SDF to revert all the PCAL settings. The only thing that *didn't* work for was the PCALX high frequency roaming line frequency, which I had to restore by hand at it's current sweep point, 3001.3 Hz).