40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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Entry  Wed Aug 24 11:30:27 2011, jamie, jenne, kiwamu, suresh, steve, Update, SUS, ETMX wiped, replaced, door on 
    Reply  Thu Aug 25 08:12:09 2011, steve, Update, SUS, ETMY & ITMY wiped, replaced, vac door on 
       Reply  Thu Aug 25 13:10:42 2011, Jenne, Update, SUS, Drag wiping 
Message ID: 5301     Entry time: Thu Aug 25 13:10:42 2011     In reply to: 5300
Author: Jenne 
Type: Update 
Category: SUS 
Subject: Drag wiping 

As we have seen in the past, both of the ITMs were more dusty than the ETMs, presumably because we have the vertex open much more often than the ends.  Kiwamu and I wiped all of the optics until we could no longer see any dust particles within a ~1.5 inch diameter area around the center. 

Since we have ITMX out for magnet gluing, I'll probably drag wipe both front and back surfaces before putting it back in the suspension cage.  All of the optics have clear dust on the AR surfaces, but we can't get to that surface while the optics are suspended.  For the ETMs this isn't too big of a deal, but it does concern me a bit for the ITMs and other transmissive optics we have.  I don't think it's bad enough yet though to warrant removing optics from suspensions just to wipe them.

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