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Entry  Mon Nov 3 17:14:00 2014, ericq, Update, ASC, IMC to IFO angular motion 2014-10-03-MC2T_to_POPQPD.pdf
    Reply  Mon Nov 3 17:43:14 2014, Koji, Update, ASC, IMC to IFO angular motion 
Message ID: 10662     Entry time: Mon Nov 3 17:14:00 2014     Reply to this: 10663
Author: ericq 
Type: Update 
Category: ASC 
Subject: IMC to IFO angular motion 

Something to note, as we have the IMC angular controls under consideration:

Jenne has the DRMI locked right now. I took a look at the coherence between the POP QPD and MC2 transmission QPDs. (Since she's using ASC, I also included those control signals. The coherences are about the same, unsurprisingly)

Based on the observed coherences, from about 1 to 6Hz, IMC motion is responsible for a fair amount of the DRMI angular motion. Also, PIT and YAW couple differently. 


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