Alone with the IFO. Started from some conversation with it.
Some ALS trials: Found the Y-end green alignment was terrible. In fact the end green set up is terrible.
Unfixed optics, clipping/fringing in the faraday, unstable suprema mounts which is unnecessarily big.
Eventualy I stopped touching the end alignment. Run ALS to see the stability of the things.
This is a performance confirmation after some touching of the ALS electronics by Manasa/SURFs
The sensing noise levels of the ALSs looks the same as before.
The intensity noise of the transmission was also checked. They are not RIN but very close to RIN
as the DC was the unity for both arms.
The X arm has worse ALS noise level and RIN.
Although I forgot to turn off the HEPA flow at the south bench during the measurement. Gurrr.