The SR3 oplev installation is now complete. It is aligned to the current pitch/yaw bias of SR3; if this changes let me know and I'll re-align the oplev. An initial calibration has been performed and the pitch/yaw gains updated (calibration data attached, yaw gain is negative in the graph due to the mounting of the QPD w.r.t. the horizontal translation stage of the receiver; the signs in the SR3 oplev MEDM should be correct). The new gains are:
This is an initial calibration to get a working system for initial commissioning work and will be refined in the future. This will need to be added to the save.snap as well.
Also, for this installation we installed the first of the 18 V to 5 V DC-DC converter boards to power the laser. While in operation the laser only pulls 0.24 A, but it should be noted that upon startup the laser briefly requires approximately 2 A and then settles back to 0.24 A. We need to keep this in mind when we start upgrading the remaining oplev lasers.