Sudarshan, Darkhan

Fixed 2 of the Epics values used for calculation of DARM time-varying parameters, in particular values that supposed to be equal to a complex quantity

EP2 = (C_0(f_pcal) / (1 + G_0(f_pcal))) * (C_0(f_ctrl) / (1 + G_0(f_ctrl)))^{-1}                          (1)

Initially the constants to be used for calculation of DARM time-varying parameters using a method described in T1500377 were taken from ER7 model and written into Epics records with a Matlab script (see LHO alog 20452 and 20361).

Due to mistyping a variable name in the Matlab script, Epics records H1:CAL-CS_TDEP_REF_CLGRATIO_CTRL_REAL and H1:CAL-CS_TDEP_REF_CLGRATIO_CTRL_IMAG that must represent real and imaginary parts of EP2 were set to have the same values as real and imaginary parts of EP1 (see Table 2 of T1500377-v7).

On Thursday, Aug. 27, 2015, around 10:00am PDT we replaced these Epics record values to represent the correct values calculated from H1 DARM model for ER7:

H1:CAL-CS_TDEP_REF_CLGRATIO_CTRL_REAL = 0.9814270
H1:CAL-CS_TDEP_REF_CLGRATIO_CTRL_IMAG = 0.0227508

SDF_OVERVIEW was updated accordingly, and updated Matlab script was committed to calibration SVN:

CalSVN/aligocalibration/trunk/Projects/PhotonCalibrator/drafts_tests/20150808_values_for_cal_EPICS/ER7model_valuesForEpics.m