Yesterday we checked effect of ISS box installed last week.
(The article about the installation is here. http://klog.icrr.u-tokyo.ac.jp/osl/?r=4035)
The stability of laser intensity is shown in attached figure.
We couldn't recognize the improvement by adopting ISS box.
(The data before installation of ISS box is here. http://klog.icrr.u-tokyo.ac.jp/osl/?r=3922)
After that, we measred OLT of ISS.
The OLT is shown in attached figure.
Low freqency resion was not measred well because of high gain.
