This morning I finally took the time to increase the 6MHz modulation depth, or better, to not decrease it when we reach DF. I fixed the value to 0dB. I made several attempts of lock acuqisiition and it did not seem to affect heavily the sequence. Now we will collect data in order to understand its stability during the lock acquisition and to evaluate which dofs it sees and with which SNR.

Then I fixed the intermediate step of CARM2MC, which now has the correct UGF, 177Hz. I took sevreal set of data at CARM2MC with UGF of 80Hz (1213612066) at CARM2MC with 177Hz of UGF (1213612554) and at SSFS (1213613041) 200s each.

I also took some more data at various amplitudes of the modulation depth of the 6MHz, see Figure 1 comparison betweeon 0 and 15dB.

Finally I decreased the gain of the SSFS by a factor 4 (1213608921). The comparison with the nominal gain is shown in Figure 2 (nominal gain: 1213609225).