I looked at the SUS-{SR2,SR3,SRM_M1_DAMP_{P,Y}_INMON channels for a period on the 21st April before the OFI, and after we had re-aligned through the OFI to rcover our optical gain on the 25th April after the OFI burn.
I have compared these to the drift in alignment in the signal extraction cavity yesterday. This is partly to figure out why we have to keep retuning our SRCL feedfoward.
Date | Mirror | delta pitch value | delta yaw value |
21st April | SR2 | 2 | 0.8 |
25th April | SR2 | 3 | 2 |
13th June | SR2 | 3 | 3 |
21st April | SR3 | 0.5 | 0.9 |
25th April | SR3 | 0.3 | 6 |
13th June | SR3 | 0.5 | 0.3 |
21st April | SRM | 13 | 6 |
25th April | SRM | 23 | 7 |
13th June | SRM | 7 | 7 |
The only angular degrees of freedom that changed significantly between these dates were: