Today during the maintenance Henning decreased the MZ offset at -0.05V, i.e. 7.5 dB of SQZ generated and SQZ_MachZ_PD_DC <1V. In this configuration we can lock the Mach Zehnder despite the drift of the humidity, but the squeezing level will be degraded a lot and the squeezing source can not be stably operated if such heavy drifts occur.
In addition we want to measure if the humidity drifts vs Green to OPA matching.
To do this I modified the SQZ_MAIN automation
SQZ_LOCKING_NO_FC
- Commented Pump Phase relay engagement line 966
- Commented ITF status on line 970
- Changed thresholds of PumpPhase and OPA locking from 5 to 50 line 984
SQZ_LOCKED_NO_FC
- Commented SQZ_OK decorator line 1016
- Commented ITF Status NO line 1008