This morning I spent some time moving offsets on SRC1 (AS72) to see if I could improve the alignment.  While doing this, I watched POP90 (to see that it went down, implying more 45 MHz build up in the SRC), and BLRMS around the 331 Hz and 1083 Hz calibration lines.  The POP90 went down, and POP18 went up by a small amount.  Also, the cal line at 331 Hz stayed pretty close to where it was in my reference.  The 1083 Hz line moves up and down a fair amount, but with my new SRC offsets seems to be at or above my reference at most times, while at other trial SRC offsets it seems to be at or below the reference at most times.  So, I think that the DARM cavity pole might have gone up a teeny bit.   My offsets were 0.2 in pitch and 1.0 in yaw.  I am leaving them out of the guardian, since we're going to do more SRC heating/alignment tests over the weekend, and this will need to be redone anyway.

After the SRC alignment was changed, Danny and I remeasured the SRCL FF, and implemented a new Feb28 filter in SRCLFF1. 

Then, I ran a pcal sweep, which is saved at /ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O3/H1/Measurements/FullIFOSensingTFs/2019-02-28_H1_PCAL2DARM_TF_5t1100Hz_8min.xml

Reminder to self on how to run the new FF fitting scripts:

• Measurement templates are in /opt/rtcds/userapps/release/lsc/h1/scripts/feedforward/
• Need to use Craig's python environment, which includes both the DTT extraction as well as iirrational fitting tools.
  • source /opt/rtcds/userapps/release/cds/h1/scripts/setup_anaconda
  • source activate cragenv
• Turn off existing feedforward
  • Turn off the input, and any filters that are engaged.
• Do the 2 measurements, save them (ensure they are checked into svn first, then overwrite old files)
  • [MICH / SRCL]_to_DARM_excitation.xml
  • [MICH / SRCL]FF_to_DARM_excitation.xml
• Open the script in the subfolder ipython_notebooks
  • >> jupyter notebook SRCL2DARMfeedforward.ipynb
• Run the notebook, one cell at a time.
• Copy the zpk output to Foton, and try the filter out!