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Entry  Thu Dec 9 12:24:46 2010, kiwamu, Update, SUS, strange ETMX suspension ETMX_spectr.png
    Reply  Thu Dec 9 22:04:40 2010, kiwamu, Update, SUS, Re:strange ETMX suspension 
Message ID: 4038     Entry time: Thu Dec 9 22:04:40 2010     In reply to: 4036
Author: kiwamu 
Type: Update 
Category: SUS 
Subject: Re:strange ETMX suspension 

[Koji, Osamu and Kiwamu]

We checked the ETMX suspension and found the UR OSEM was close to the magnet.

So we rotated the UR OSEM so that it won't touch the magnet any more.

We will check the resonant frequencies again by taking the spectra.


  In fact the ETMX stacked when we applied a big angular offset to Yaw direction.

This was because that the magnet was actually touching the UR OSEM.

The earthquake stops were fine, they weren't touching the test mass.

Also we looked at the wire and the standoffs, they seemed fine.

Quote: #4036
We are going to inspect the suspension today.

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