Green light for the vacuum, supposed to start around 10-11 pm
The setup of the OpLevs must be revised because this time the alignment Mi VS Ma is significantly worse. during the assembly it was assessed to be ~1 mrad off, but indeed, once suspended it was larger. We can cope with that ~2.5 mrad, but the lens and the sensor have to be properly reset. It will be done once we re-lock the system, next week.
a special thank to VAC crew assistance
We checked the alignment of the optical lever beam on the lens, and found it acceptable (Fig.1, lines are hand drawn and only serve as a general indication).
We proceeded to adjust the position of the psd to recenter the beam on the sensor's surface (Fig.2).
The operation was successful.
