J. Kissel

I've taken a new set of calibration measurements that can be used to help track the slow changes in the sensing function over time. The goal is to have a set of these measurements once every few weeks over the course of the run to eventually build up enough of a data set that we can compare the results against the parameter tracking from calibration lines -- specifically the SRC detuning spring frequency and Q, which we're currently not tracking.

The new data live here:
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O2/H1/Measurements/SensingFunctionTFs/
   2017-01-24_H1DARM_OLGTF_4to1200Hz_25min.xml
   2017-01-24_H1_PCAL2DARMTF_4to1200Hz_8min.xml
   2017-01-24_H1_PCAL2DARMTF_BB_5to1000Hz.xml

These do *not* need to serve as a new set of reference measurements, given that we've only changed digital filters today (see LHO aLOG 33585).

The broad-band (BB) PCAL2DARM transfer function was in the spectrum from Jan 23 2017 23:09:32 UTC for a minute or so (50 averages, 75% overlap, 0.5 Hz BW), so this can be used to verify the GDS pipeline output as well.

More detailed analysis of the sweeps to come.