J. Kissel, T. Sadecki, D. Hoak, E. Merilh

As a last ditch effort to be able to recocile the calibration for the rest of the run, given the drastic change to the ETMY ESD, I've completed a DARM OLGTF, and also tuned and completed a PCAL EX to DARM transfer function. I got halfway through the same transfer function using PCAL EY, but the lock broke from some sort of seismic disturbance. The interferometer was at 17 [W] requested input power for all of the below measurements, I attach the relevant digital parameters that are relevant (sadly the list is growing! as so many things are changing!).

Analysis to come, but the measurements have been committed to the CalSVN repo here:
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/PreER7/H1/Measurements/DARMOLGTFs
2015-06-13_H1_DARM_OLGTF_LHOaLOG19128_ETMYL3LPOFF.xml

/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/ER7/H1/Measurements/PCAL_TRENDS
2015-06-13_H1PCALEX_2_DARM.xml
2015-06-13_H1PCALEX_2_DARM_stronger.xml

/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/ER7/H1/Measurements/PCAL_TRENDS
2015-06-13_H1PCALEY_2_DARM_stronger.xml

For the PCAL sweeps, I've modified the following settings from what Sudarshan had set up (2015-06-12_pcal_sweep_X.xml in the same folder) such that (a) the measurement would complete in a reasonable amount of time, (b) we'd get coherence over the entire band of measurement, and (c) that the frequency vector would match the DARM OLGTF:
- Changed the frequency range to 5 to 5000 [kHz]
- Changed the frequency vector from linear to logarithmic
- Changed the user-defined amplitude format to Envelope
- Increased the number of cycles to 25
- Increased the duration of a cycle to 1 [sec]
- Increase the drive strength in various frequency bands where there remained no coherence