(Alexa, Evan, Sheila)

We roughly centered the EX IR QPDs; the beam is now on all four quadrants, however, more fine tuning could be done. The beam was slightly off in yaw common to both QPDs, and already fairly well aligned in pitch.  I adjusted picomotor M14 by ~200 steps in yaw to bring the beam center on the QPDs. I did not have to adjust M4, which would affect the IR transmitted beam onto  ISCTEX, and potentially clip the green beam. The current picomotor positions are:

M14: X = 53045, Y = -38603, M4: X = 9267, Y = 1665

The sum show about 1000 cnts on QPDA, and 700 cnts on QPDB. This is consistent with the power budget (alog 10006), so I believe this is the real beam and it is now centered enough.

I did something similar for EY.  QPDA was farily well centered, with the beam on all four quadrants. QPDB was off a bit; so I adjusted M14 in both pitch and yaw, to get this beam better centered and on all four quadrants. This adjustment did not move QPDA all that much. There does not seem to be a picomotor position readback for EY ???? They are all zero. The sum show about 840 cnts on QPDA, and 760 cnts on QPDB.