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Reports until 20:14, Monday 13 July 2015
H1 ISC
eleanor.king@LIGO.ORG - posted 20:14, Monday 13 July 2015 (19594)
roll mode damping

Sheila, Matt, Elli

Today, like yesterday, we used AS A 45Q YAW to damp the roll modes.  The ITMY settings were different today compared to yesterday; the sign and the phase has changed.  Currently the roll mode damping is working with settings

Optic ETMY  ETMX ITMY  ITMX
Roll mode frequecy [Hz] 13.816 13.889 13.93 13.978
Phase [deg] 0 -90 0 -60
Filters on FM 3,4   FM 2,3,4,7 FM 3,4 FM 2,3,4
Gain -50 10 100 100

The filter settings are in the guardian, however the H1:ASC-OUTMATRIX element; H1:ASC-OUTMATRIX_TESTMASS_DAMP_1_3, does not get set from 0 to 1 in the guardian, so these filters do not currently turn on automatically.

Displaying report 1-1 of 1.