Rana, Stefan

Using Rana's filter fitting tool (available in
   /ligo/home/rana.adhikari/Templates/DTT/LSC/FF
   or
   /ligo/home/controls/sballmer/today/FF
we remeasured and fitted the MICH FF transfer function.

The new fitted filter (FF3 in FM4) is
sos(-0.000543835088,   [  -1.93662264300273;   0.95485272408082;   0.30546714694311; -0.69453285305689;
                          -1.99510327713713;   0.99517904131748;  -1.99243149865104;  0.99250763632503;
                          -1.99954772753581;   0.99957826550970;  -1.99936615655289;  0.99939939939844;
                          -1.99965218293192;   0.99975661861859;  -1.99993380253468;  1.00003473727562;
                          -1.99969845455122;   0.99979417820973;  -1.99992371170330;  1.00002274176099;
                          -1.99981093117311;   0.99985759151419;  -1.99995617290421;  1.00000284176776;
                          -1.99985737603421;   0.99996014647150;  -1.99984813627844;  0.99995086001340;
                          -1.99992036795975;   0.99996576562300;  -1.99993708678199;  0.99998253575133;
                          -1.99944212960262;   0.99996998756589;  -1.99944272164552;  0.99997065091132;
                          -1.99975193818562;   0.99999930668374;  -1.99975187384463;  0.99999929435542;  ],"o")

Plot 1 shows the fit quality,
Plot 2 shows the achieved subtraction, with an artificial MICH drive.