Yesterday we aligned the AOM in the high power path. The alignment was optimized to have maximum power in the right direction of the first order diffraction, in order to be able to dump this beam in front of the PMC, see Tablelayout (DCC-T0900610). 

The alignment of the PMC was optimized for high power operation. Afterwards we had 156W in transmission and 14W in reflection of the PMC without a beam diffracted by the AOM.

We also calibrated and linearized the diffraction of the AOM (the potentiometer in the Servo was adjusted to have 0.234V at the signal connected to the AOM driver, when the AOM offset was 0V).

In AOMOffset2power.pdf you can see the linerization. 

From the fit in AOMSignal2Power_diffraction.pdf one can get the values to calculate the AOM diffraction in %.