Evan, Sheila
We did a little bit of cleaning up today. First edited the IMC guardian to adjust the input gain for different input powers. We though we had implemented this before, but what we had actually wasn't working. I added an if statement in the BOOST step that sets the input gain for 1W, 4W, or 10W. We could have something better which adjusts it for any input power.
We also changed the ISC_CONFIGs guardian to accoun for the cable swap we did on friday night, PRX locked is not using reflAIR in the input matrix, which is really REFL 9.
Evan and I then locked DRMI just to make sure everything is OK with the TCS back on, it locked with no problem, now we are checking demod phases.
Demod phases are as follows. We have not made any changes.
For 9 MHz and 45 MHz, DRMI was locked on 1f, and for 27 MHz and 135 MHz, DRMI was locked on 3f. We drove a 132 Hz line into PRM (and then later SRM) to gauge the suitability of these demod phases.
For the 3f locking, tuning the 135 MHz demod phase to 25° is sufficient to minimize the appearance of PRCL and SRCL in the 135Q phase. However, for the 1f locking, tuning the 45 MHz demod phase to 142° minimizes only the appearance of SRCL in 45Q; for PRCL, the demodulated 45Q signal is about 15% of the demodulated 45I signal. The demod phase required to minimize the apperance of PRCL in 45Q is instead 150° (but this leaves the SRCL 45Q signal at about 15% of the SRCL 45I signal).