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Entry  Fri Feb 10 02:35:29 2012, kiwamu, Update, IOO, crazy ground motion MCunlock.png
    Reply  Fri Feb 10 11:01:31 2012, steve, Update, IOO, crazy ground motion seism1davg.png
       Reply  Fri Feb 10 11:46:44 2012, steve, Update, IOO, seismic noise back to normal seism4h.pngseis60s.pngoneday.png
          Reply  Fri Feb 10 15:47:38 2012, rana, Update, PEM, seismic noise back to normal 
             Reply  Fri Feb 10 15:52:35 2012, Jenne, Update, PEM, seismic BLRMS loud too 
                Reply  Fri Feb 10 23:58:30 2012, rana, Update, PEM, seismic BLRMS loud too 
                   Reply  Mon Feb 13 11:30:51 2012, Jenne, Update, PEM, seismic BLRMS loud too 
                      Reply  Mon Feb 13 12:02:17 2012, Koji, Update, PEM, seismic BLRMS loud too 
    Reply  Fri Feb 10 23:19:09 2012, kiwamu, Update, IOO, cross talk causing fake seimometer signals 
Message ID: 6266     Entry time: Fri Feb 10 02:35:29 2012     Reply to this: 6268   6274
Author: kiwamu 
Type: Update 
Category: IOO 
Subject: crazy ground motion 

I gave up tonight's locking activity because the MC can't stay locked.

It seems that somehow the seismic noise became louder from about 1:00 AM.

I walked around the outside of the 40-m building to see what's going on, but no one was jumping or partying.

I am leaving the MC autolocker disabled so that the laser won't be driven crazy and the WFS won't kick the MC suspensions.

 

The attachment is a 3-hour trend of the seismometer outputs and the MC trans.

MCunlock.png

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