Jeff B, Kiwamu,

We powered up the input power to 50 W tonight with SRM controlled by the dither alignment. We held the interferometer at 50 W for 30-ish minutes but this was ended because of a PI at 18056 Hz (28259).

During this short period, we moved the PRM pointing (or PRC1) in pitch and confirmed that moving PRM further in the negative direction (by introducing an offset in the error point of PRC1) improved the recycling gain. See the attached. The recycling gain slowly went back to 28 or so at 50 W. We did not get a chance to explore the optimum point yet. POPX started railing when we steered PRM at 40 W on the way to reach 50 W.