J. Oberling, R. Short

This morning we tweaked the operating current of the PSL 4S-HP amplifier pump diodes; this was done with the ISS OFF.  The tweaks can be seen in the attached plot.  End numbers:

• PMC Trans: ~106.9W
• PMC Refl: ~23.9W
• Amp2 output: ~140.0W
• Amp1 output: ~70.7W

With the ISS back ON, we had to decrease the RefSignal to -2.01 V to put the diffracted power % back at our usual 4% (this is due to the increase in power out of the PMC).

To end, we took the opportunity to tweak the beam alignment into the RefCav.  We started with a TPD of ~0.533V, and ended with a TPD of ~0.55V.

A rotation stage calibration will need to be performed due to the increased power out of the PMC.