I launched a L2P(Y) transfer function measurement on PRM and BS.
The coil gains for the M2 stage of BS were set back to the ones Keita set on 24th of December (see alog 9079):
Before I changed these numbers they had been:
Therefore all the BS actuators on the M2 stage has now different sign. We should remember this, especially when locking the Michelson. I have no idea of why we kept using these funny +/-1 things instead of the balanced coil gains.
PR2 is intentionally misaligned to avoid a fringe showing up in REFL_WFSs. PRM is slightly misaligned on purpose to have the reflected light centered on REFL_WFS_B.
Currently PRM is at:
Its good aligment to get PRMI fringe is
Both TF measurements are running on opsws1.
oops!