Reports until 17:14, Wednesday 06 July 2016
H1 ISC (ISC)
haocun.yu@LIGO.ORG - posted 17:14, Wednesday 06 July 2016 (28202)
ASC HARD Pitch Modeling Correction

The measurements of HARD loops with different laser powers were posted before (alog 27864, 27885, 27920).

We found that the big discrepancies between the measurements and modeling for Pitch are caused by a mistake in the simulation. I fixed it and replotted the measurements at 10w and 40w (37w actually) as below.

Now the modeling curves fit the measurements much better. In the 10w plots, the black dots are measurements without the optical levers servos on for the ETMs, and the red ones are measurements with OL on for all the TMs. (The blue curves are the modeling results, which assume only OL on for ITMs.)

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