CAL group
We did the calibration measurements.
Estimated parameters in the Pre-maintenance measurements are as follows.
H_etmxtm = 3.87957055e-14 @10Hz ( 0.03% from previous measurements)
H_etmxim = 1.60823003e-14 @10Hz ( 1.16% from previous measurements)
Optical_gain = 2.128193e12 ( -2.87% from previous measurements)
Cavity_pole = 18.349842 H ( 1.67% from previous measurements)
Previous values are listed in klog#34090.
Fig. 2 shows the ratio of the sensing functions estimated on June 13st and June 6th.
As can be seen from this figure, the actual difference in the sensing function is approximately -1.2%.
Estimated parameters in the Post-maintenance measurements are as follows.
H_etmxtm = 3.893062476e-14 @10Hz ( 0.03% from pre-maintenance measurements)
H_etmxim = 1.552203891e-14 @10Hz ( -3.4% from pre-maintenance measurements)
Optical_gain = 2.1602595e12 ( 1.5% from pre-maintenance measurements)
Cavity_pole = 17.97637634 Hz ( -2% from pre-maintenance measurements)