This morning while going in laser lab we realized that the PMC was misaligned.
While looking at the signals (figure attached), it seems that the increase of temperature of the last days (and/or the lack of data of the 22/11) induced a change in the behavior (power, pointing) of the fiber amplifier.
The temperature came back to a nominal value but the beam did not.
Moreover, when investigating the problem we spotted some dust on the last lens of the telescope (picture attached).
As soon as we will get the signals back, we will futher investigate the problem and remove the dust.
It seems that starting yesterday night either the fiber amplifier suddenly switched off or we have an artificial null signal from the related sensors. We will have a look in the laser lab.
