Reports until 23:13, Thursday 14 May 2015
H1 SUS (ISC, SUS)
sheila.dwyer@LIGO.ORG - posted 23:13, Thursday 14 May 2015 (18441)
some violin mode damping is restored

Tonight Dan went through some of the old violin mode damping settings, we have had all violin mode damping disabled for the past several weeks in the guardian since we improved the recycling gain.  Dan found that the old settings work for 6 of the modes, ITMY mode 3,5 and 6, ETMY mode 5, and ITMX mode 3 and 6. For ITMY mode 4 we need a sign flip in the gain.  All of the ones that Dan checked I put back into the gaurdian, some of which now have lower gain than before.  I also added ETMY roll mode damping back in the guardian.