I replaced the IO lens, L1, that's downstream of the EOM by about 3 inches. The new lens needed to shift +Y direction from the old lens, to recover yaw, and recovery of the IMC WFS with an unlocked IMC revealed that the IMC_IN beam was still off in yaw, so I also made a very small adjustment with M3, unnoticeable on the rotation stage, and the iris, but seen by the cameras and IMC.
I realigned the IMC, and relocked, and checked against previous locks. My target lock was the Nov 26, 17:00 lock, and current values for the IMC mirrors are within -15.7urad to +10.9urad from the target. H1:IMC-REFL_DC_OUT16 is now at 0.072.
| Nov 26 | Nov 28 | diff | |
| 17:00 | 07:42 | ||
| lens change | before | after | |
| 'H1:SUS-MC1_M3_WIT_PMON' | -275.9 | -272.0 | 3.9 |
| 'H1:SUS-MC1_M3_WIT_YMON' | -983.1 | -972.3 | 10.9 |
| 'H1:SUS-MC2_M3_WIT_PMON' | 156.2 | 140.5 | -15.7 |
| 'H1:SUS-MC2_M3_WIT_YMON' | 627.2 | 630.7 | 3.5 |
| 'H1:SUS-MC3_M3_WIT_PMON' | -685.6 | -675.6 | 10.0 |
| 'H1:SUS-MC3_M3_WIT_YMON' | -1255.8 | -1260.6 | -4.8 |