(Betsy, for Betsy and Kissel)
This afternoon, Kissel and I embarked on the second round of SDF house cleaning. With the IFO set to down for a short bit, and after enlisting help from commissioners, we resolved most changes in the SAFE files. Things that were "interesting" yet accepted:
- New Test Mass L3 LOCK P/Y FM7 Stop27 filter (commissioners needed to add this along with last week's Stop28 filter but this still needs to be sorted out)
- Accepted new IMC PZT offset, but these will likely need to change during the subsequent lock due to hysteresis (if this model goes down, currently not expected to)
-Quite a few ALS settings accepted or reverted (Sheila was surprised just now to find that the ALS COMM PLL OFFSET slider was unresponsive...)
- Sheila and Kissel found that the PRM M2 Coil Driver state and the M2 Lock Output SW SDF settings were saved in the wrong state so were accepted (correct state: coil driver in State 3 and output OFF)
- OMC DCPD Gains found in the unbalanced state so fixed (both A and B gains set to 1000)
But the weirdest was:
- Some strangeness in the SDF setpoints for LSC REFL RF9 Phase and ITM Baffle PD Gains/Offsets (on different PLCs!) which stated that the settings were changed within a few minutes of Sept 19 13:49, yet the SDF as-found EPICS values were correct. So we accepted the correct values. No one in the room could confirm these older setpoints, but we did find an alog (44064) pointing to SDF model work around that time...
We also accepted all of the optic DRIVEALIGN offsets (alignment sliders) so that restore should go smoothly.
It's as reconciled as it's gonna get for tomorrow's CDS boots of LSC, ASC, SUS.