This is a report on comparing two most recent DARMOLGTF and PCAL2DARMTF measurements taken on December 1st (LHO alog 23883) and December 21st (LHO alog 24363) against earlier measurements during ER8/O1.

Kappa values used in the κ_tst and κ_C corrected parameter file for Dec 01, H1DARMparams_1133051601_kappa_corr.m are

% An hour average (30 minutes) kappas starting at GPS time 1133053680
par.kappa_tst = 1.040826;
par.kappa_pu = 1.023252;
par.kappa_A = 1.027452;
par.kappa_C = 0.986240;
par.fc = 334.808296; % [Hz]

Kappa values used in the κ_tst and κ_C corrected parameter file for Dec 21, H1DARMparams_1133051601_kappa_corr.m are

% An hour average (59 minutes) kappas starting at GPS time 1134764580
par.kappa_tst = 1.051995;
par.kappa_pu = 1.022335;
par.kappa_A = 1.037174;
par.kappa_C = 0.990362;
par.fc = 335.746785; % [Hz]

The comparison showed that actuation function residuals mostly remain under about +/- 1% in band [30 .. 500] Hz; sensing function redisuals are under +/- 1% upto 1 kHz.

The parameter files for these measurements were committed to CalSVN at

/trunk/Runs/O1/H1/Scripts/DARMOLGTFs/H1DARMparams_1133051601.m
/trunk/Runs/O1/H1/Scripts/DARMOLGTFs/H1DARMparams_1133051601_kappa_corr.m
/trunk/Runs/O1/H1/Scripts/DARMOLGTFs/H1DARMparams_1133051601_kappa_corr_full.m
/trunk/Runs/O1/H1/Scripts/DARMOLGTFs/H1DARMparams_1134769815.m
/trunk/Runs/O1/H1/Scripts/DARMOLGTFs/H1DARMparams_1134769815_kappa_corr.m
/trunk/Runs/O1/H1/Scripts/DARMOLGTFs/H1DARMparams_1134769815_kappa_corr_full.m

The comparison script and plots were committed to SVN at (r2067)

/trunk/Runs/O1/H1/Scripts/DARMOLGTFs/CompareDARMOLGTFs_O1.m
/trunk/Runs/O1/H1/Results/DARMOLGTFs/2015-12-21_H1DARM_O1_cmp_*.pdf