Kar Meng, Sheila

This afternoon we aligned the squeezer beam to AS_C, AS_A, and AS_B QPDs.  This is currently done with OM1, OM2, SRM, and ZM6 at the same alignment they were at in the end of O4.  That means that the beam location on ZM5 should be the same as it was at the end of O4 (75732).  With this alignment, we are using up most of the actuator range on ZM4, so we will either have to move ZM6 and the spot position on ZM5, or mechanically yaw ZM4.  We can't easily reach ZM5 with an IR card to check if the beam position on it is centered, if we can find a way to get an IR card on a long stick to asses that centering that would be helpful.  

As part of this, we set up alignment loops from AS_A to ZM4 and AS_B to ZM5, they are slow but reliable.  I will attach a screenshot of settings here tomorow.

We also checked the alignment of the beam onto the CLF FIBER rejected PD, which was off because the fiber collimator was tilted to realign the the new OPO cavity axis.  Kar Meng adjusted the pitch of the TFP, then slid the PD to center the beam in yaw, and lastly yawed the PD to make sure the reflection was going nicely to the black glass V.