Kambara, Michimura, Akutsu

We changed the X end collimater for a spot size larger.

So we measured the calibration factors of the optical levers at X end mirrors from the mirro tilt [rad] to the output signal again.

The method was according tohttp:// http://klog.icrr.u-tokyo.ac.jp/osl/?r=569,http://klog.icrr.u-tokyo.ac.jp/osl/?r=939

we used the length between QPD and mirror, which was  L=1473(7) mm (Kuwahara-san measured) .

The results at Xend Yaw(X) and Xend Pitch(Y)are respectively shown in Fig.1,2, and 

dP/dx:   -1.329+/-0.045 (out/sum)/mm,  1.517+/-0.090 (out/sum)/mm

dP/dθ:   -3.915(3)e3 (out/sum)/rad,  4.469(8)e3 (out/sum)/rad