List of commissioning tasks

The list below is for the time between now and O1. Since the sensitivity has reached the nominal goal set for O1, we plan to prioritize reliability and operations issues to maximize the up-time.

Reliability and Operations

1. MICH freeze/feed forward
2. Move to 90mHz blends everywhere
   Beam splitter and in transverse direction on test masses.
3. Better automation of bounce/roll damping based on monitors
4. Investigate alignment drift of SR3 (heating)
5. Alignment stability at high power
6. Thermal tuning of ITMs (stability, check contrast defect, sensitivity, ASC matrix)
7. Make a permanent PI monitors (down-convert 15kHz and record)
8. Optimize PI mitigation
9. Duty cycle improvements in locking procedure
10. Damp violin mode harmonics (needs more filters in SUS model)

Sensitivity

11. Monitor discharging, charge noise and ring heater coupling
12. Angle to length decoupling; try to make it permanent.
13. Intensity noise coupling and mitigation
    Are the IMC ASC offsets stable without auto-centering?
    Minimize acoustic noise coupling (new PSL periscope mount ready?)
14. Move to in-vac refl sensor (or figure out why we can't)
15. Frequency noise investigation; why is it so high?
16. Oscillator noise couplings
17. New OCXO and EOM drivers
18. Re-engage low pass on ETMY ESD
19. Investigate/find low frequency noise
20. Investigate beam tube dust glitches (histogram, distribution, quiescent rate)
21. HAM6 scattering measurements after the shroud installation and beam diverter move
22. SRC/PRC alignment effect on sensitivity
23. Check noise on all coil outputs(?)
24. Check/explain shot noise number (null stream)
25. Find best beam spots on ETM/ITMs (maybe wait for ER8)

Others

26. Finish SRC length/Gouy phase measurements
27. Final OMC alignment scheme
28. OMC alignment scheme that doesn't rely on the OMC SUS
29. HWS to investigate thermal loading
30. Timing studies