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 Mar 5 19:27:24 2014, manasa, Update, IOO, MC calmed down 
    Reply  Thu Mar 6 09:47:11 2014, Steve, Update, IOO, MC trend of 20 days IOO_20days.png
    Reply  Thu Mar 6 19:17:05 2014, manasa, Update, IOO, MC calmed down MC_spots_Mar6.png
       Reply  Fri Mar 7 16:56:17 2014, steve, Update, IOO, IOO qpds centered IOOqpdCentered.png
          Reply  Mon Mar 10 09:28:48 2014, steve, Update, IOO, IOO pointing 2 days IOOpointing2d.pngmorningseconds.png
             Reply  Mon Mar 10 12:49:27 2014, Jenne, Update, IOO, PMC input pointing misaligned 
Message ID: 9697     Entry time: Thu Mar 6 09:47:11 2014     In reply to: 9695
Author: Steve 
Type: Update 
Category: IOO 
Subject: MC trend of 20 days 

Quote:

The IMC has not been behaving well since this morning and totally not happy when Q was finishing his measurements. The WFS servo had large offsets in pitch. Looking back at the trend and using ezcaservo to restore the suspensions did not help.

I realigned the IMC and brought TRANS SUM to ~18000 and MCREFL to < 0.5. The spot positions are not very good; nearly 2 mm off in pitch on MC1 and MC3. But after the alignment of MC, the WFS servo offsets were below +/-20.

The MC has been locked stably with WFS servo ON for the last few hours.

P.S. I did not touch the WFS pointing or reset the WFS offsets.

 

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