Finally got setpoint profiles to work.

dataset1.dat - Amp/ph stripchart, ramping from 1 MV to 2.886 MV, 80->55 deg
               phase, 330 ms ramp time, no beam
dataset2.dat - Tuners

Tweaked tuner loops and phase offsets for best slow ramping and minimum
reflected power at 0.7 (2.886 MV). Brought cavity 1 down from 1.1 to 0.63kW
and cavity 2 from 1 to 0.9 kW.

Found that we trip on reflected power during fast ramping (330 ms ramp, 6.1
seconds cycle, 5 seconds @ 3.2 GeV)). Found interlock level somewhere
between 15 and 10 kW will cause a trip (15 kW OK for 10 cycles, 10 kW tripped
after 5). Set threshold to 20 kW.

dataset3.dat - ~30 minutes of cycling
dataset4.dat - tuners
