This is a belated report on comparing DARMOLGTF and PCAL2DARMTF measurements taken on Oct 28, 2015 (LHO alog 22928) vs. DARM model.

The comparison showed that measured sensing function residual have reduced to under 1% in a band [~30 ~500] Hz when comparing to a κtst and κC corrected DARM model. Also κ_pu is close to unity and cc pole frequency calculated from cal lines just before we started taking the TF measurements is 10 Hz higher than the one around October 15 TF measurements, and closer to 341 Hz, a value in the canonical DARM model. For previous kappa values see reports from previous similar analysis: LHO alog 22571, LHO alog 22552, LHO alog 22071.

Kappas used in the kappa corrected parameter file H1DARMparams_1130094627_kappa_corr are given below (notice that at this point we only apply κ_tst and κ_C). These are 60 minute mean kappas calculated from 60 s FFT SLM data starting at GPS 1130091000.

κ_tst = 1.012713
κ_pu = 1.003557
κ_A = 1.015523
κ_C = 0.980036
f_c = 344.154643 [Hz]

An updated comparison script and parameter files for the most recent measurements were committed to calibration SVN (r1759):

/trunk/Runs/O1/H1/Scripts/DARMOLGTFs/H1DARMparams_1130094627.m (r1751)
/trunk/Runs/O1/H1/Scripts/DARMOLGTFs/H1DARMparams_1130094627_kappa_corr.m
/trunk/Runs/O1/H1/Scripts/DARMOLGTFs/CompareDARMOLGTFs_O1.m
/trunk/Runs/O1/H1/Scripts/CAL_PARAM/plotCalparameterFromSLMData.m

Comparison plots were committed to CalSVN (r1779):

/trunk/Runs/O1/H1/Results/DARMOLGTFs/2015-10-28_H1DARM_O1_cmp_*.pdf