Danny, Georgia, Sheila

We spent some more time on violin modes this afternoon.  

Danny found that one of the modes which had been assigned to ITMX was actually on ITMY, 501.755, it is now in mode 8.  I changed the phase for this mode to -gain, +60 deg phase.  

There are 7 modes on ITMX which have settings in the guardian which seem to work. The filter for MODE2 (504.891 ) may be ring up by one of the other ITMX filters, but I am not sure which.  

We also tested the guardian on ITMY, right now it seems to work for 5 of the 8 modes we have in the wiki table for ITMY.  It sets the gain to zero for the doublet and for MODE3, which we are not sure about.  We made a couple of the filters on iTMY narrower today to avoid ringing up nearby modes with them.  

I also went through and changed the monitor filters on ITMY and ETMX so that they all are 8th order butterworths 20mHz wide.  We want them all to have the same width so that we can directly compare the monitors to each other for automatically deciding when to turn the damping on and when to change the gain.