Camilla, Sheila, Following on from 81852.

Today I re-ran the sqz/h1/scripts/SCAN_PSAMS.py script, with SQZ_MANAGER guardian paused (so it's not forcing the ADF servo on). The script worked as expected (setup by turning off ADF servo and increasing SQZ ASC gain to speed up, then changed ZM PSAMS, waited 120s for ASC to coverage, turned off ASC, scanned sqz angle and saved data and then repeated) and took ~3m30 per step.

The results are attached (heatmap, scans)  but didn't show an obvious direction to move in. Maybe the steps were too small but are already larger than those use at LLO LLO#72749: 0.3V vs 0.1V per step.

Our initial ZM4/5 PSAMs values were 5.6V, -1.1V and looking at the attached data, we took them to 5.2V, -1.5V. We then decided ther range looked better when the PSAMs were higher to went to 6.0V, -0.4Vthis seemed to gain improve the range ~5MPc, we checked by going back to 5.2V, -1.5V and the range again dropped, main change appears to be in orange BAND_2 OMC BLRMs which is 20-34Hz, the places with glitches in OAF BLRMS are noisy times from Robert's injections. Then went further in this direction to 6.5V, 0.0V, this didn't help the range so we are staying at 6.0V, -0.4V, sdf's attached. This seemed to be a repeat-able change that gave us a few MPc's in range! Success for PSAMS: zoomed out and zoomed in plots attached.

Future work: we could run the SCAN_PSAMS.py script with small 0.1V changes as LLO does.