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Entry  Fri Sep 16 17:16:15 2011, Jenne, Update, SUS, Input matrix diagonalization: Fail! 
    Reply  Fri Sep 16 23:22:36 2011, kiwamu, Update, SUS, ETMX input matrix : bad YAW-SIDE coupling 
       Reply  Sat Sep 17 02:07:10 2011, kiwamu, Update, SUS, ETMX input matrix : bad YAW-SIDE coupling 
Message ID: 5438     Entry time: Fri Sep 16 17:16:15 2011     Reply to this: 5444
Author: Jenne 
Type: Update 
Category: SUS 
Subject: Input matrix diagonalization: Fail! 

[Jenne, Anamaria]

I put the new matricies in from the free swinging test for the: ITMX, ITMY, ETMX, ETMY, PRM, BS

Some of the optics damped okay, but ETMX and BS were not good at all.  ETMX was ringing up when I turned on the damping.  BS wasn't, but when I gave it a kick, it wouldn't damp.  No good.

I tried ITMY, and it was totally fine, with nice damping Qs of ~5.  So, I don't know what's going on. 

Anamaria is trying a new 4x4 matrix-inverter, so we can look at the inversion of just the face osems.  We'll see how it goes. 

Since things were crappy, I did a BURT restore, so things are as they were earlier this morning.

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