Phase scan (figure 1)

• squeezing level -2.4 dB, antisqueezing level 5.3 dB.
• Red line Darm 1350-1750 Hz, Blue Line: Darm 2600-2800 Hz, Yellow Line Hrec 2600-2800 Hz, Violet line Hrec 1350-1750 Hz, Green 2650-314 0Hz 
• The green line is a BRMS computed with window of 1s whereas the other BRMSs are computed with 20s windows
• The phase scan in DARM is less visible than in HREC: this was due to the bad CMRF of the ITF, so we had a lot of frequency noise
• The phase noise was performed in a not good alignment condition so the maximum squeezing level was 2.4 dB
• This is visible observing the B1_PD1_mag 3.0e-3V when was misaligned and 3.5e-3 V when I realigned it exploting the dither loop
• The brms channel computed with 1 s windows is faster than the other, so it allow to computed better the phase distance between mag and sqz (0.33 rad)

Night Injection (figure 2)

• The night injection, after the realignment started with -2.8 dB of squezzing in the bandwidth between 2650-3140Hz
• After 6 hours the sqz level was decreased to -2.2 dB, but this was probably due to a 56MHz RIN, see B1s2 DC photodiode (second line of the plot)
• After the locking seems that for long time we injected antisqueezing, but this can be due to hrec not updated or a bad working point of the itf. The phase error signal of the slow CC loop was in a good position and not drifted (third line)

Coherent control phase noise (figure 3)

I performed the CC phase noise calibration with two different methods

Method 1:

1.  open shutter, CC open,
2. Measure the Aplitude of the fringes and from them obtaining the V/rad
3.  PD1cal =  0.00399 V/rad,   PD2cal =  0.10984 V/rad

Method 2:

1.  Open shutter, Close CC,
2.  perform a phase scan
3.  plot SQZ_B1_PD{1,2}_Q as a function of the CC phase,
4.  fit the linear part of the curve 
5.  PD1cal =  0.00388 V/rad,  PD2cal =  0.11375 V/rad

The two methods are consistent. I computed the rms phase noise of the CC between 0.05Hz and 25 kHz and I obtained 20 mrad in loop (PD1) and 23 mrad out of loop (PD2).