Summary:

The inverse actuation filter described in alog 21944 has been installed on F1 and F2 of H1:CAL-PCALX_SWEPT_SINE filter bank.

Details:

I installed the inverse actuation filter on Pcal X-end for testing purpose. The filters are installed on F1 and F2  of H1:CAL-PCALX_SWEPT_SINE filter bank. F2 contains a gain factor of average arm-length to convert strain to metres and F1 contains the transfer function that converts metres to counts of excitation at Pcal. The transfer function of the filter that is installed in foton is shown in attachment 1. These filters will remain off during normal IFO configuration and are monitored in the SDF.  I took some transfer function measurement between Excitation and TxPD, RxPD and OFSPD. The measurement files are committed to the SVN and can be found at:

/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Measurements/INVACT_PCAL/

To follow: Analysis of the above measurement and a waveform injection at the next opportunity as a test.