SudarshanK (remotely), Dimitri Estevez (Virgo), and RickS

On Tuesday of this week, we installed the new Pcal PD-to-integrating-sphere adapters for the Tx and Rx sensors at Xend and calibrated using the upgraded Working Standard, WSH.

Results of that calibration work will be appended to this entry.

Today, we converted to calculating the force coefficients for the Tx and Rx PD readback channels in the Front End code.

This involved updating epics values and switching of filters as was done earlier for the Yend (see Link).

The new epics record values are in the attached text file and in the SVN at 

/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O3/H1/Results/CALCS_FE/lho_end_pcal_epics_created-20190125.txt