Reports until 19:14, Friday 15 August 2014
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jason.oberling@LIGO.ORG - posted 19:14, Friday 15 August 2014 (13440)
ETMx Optical Lever Alignment/Calibration

D. Cook, J. Oberling

Quick log as it's late and Friday.

After many problems with bad fibers, a seemingly bad laser (see bad fibers), and bad alignment of the transmitter pier (too high, beam was clipping on the viewport), we finally got the ETMx optical lever up and running.  Did a quick calibration as this OpLev will be used shortly.  Calculated new gains of:

These gains were entered and tested vs. the ETMx alignment sliders.  Yaw was a definite improvement but pitch seemed to have gotten worse, therefore I kept the old pitch gain.  The ETMx OpLev gains are currently:

Someone will have to do a safe.snap of this change as I don't know how to do that yet.