Koji and Manasa did some work on the PSL green situation today (Koji is still writing that log post up), but I just measured the Yarm out of loop sensitivity, and WOAH.
The beat is -11.5dBm at 42.8 MHz. Koji said the sweet spot is around 30 MHz. The out of loop sensitivity is 400 Hz RMS! Something to note is that the Y beatnote still has a 20dB amplifier before going to the beatbox, but the X does not. We had been worried about saturation issues with the X, so we took out the amplifier. However, I might put it back if we win big like this.
Recall from elog 10462 that I had saved a reference of the out of loop noise for both X and Y, but Y was much noisier than X. The references below are from that elog, and the new Y is in dark blue. (Edit, 9:18pm, updated plot measuring down to 0.01Hz. This is the new reference on the ALS_outOfLoop_Ref.xml template).
EDIT: (Don't worry, I'm going to measure X too, but right now the beam overlap on the camera is not good, as if something drifted after Koji and Manasa closed up the PSL table)
Touched up the alignment for X on the PSL table. Current beatnotes are: [Y, -13.5 dBm, 74.1 MHz], [X, -22 dBm, 13.9 MHz]. Red is the current X out of loop, and I've saved it as the new X reference on the template.