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Entry  Thu Oct 6 15:40:57 2011, Jenne, Update, LSC, Arm absl length data taken 
    Reply  Tue Oct 11 21:23:51 2011, Jenne, Update, LSC, Arm absl lengths 
Message ID: 5626     Entry time: Thu Oct 6 15:40:57 2011     Reply to this: 5653
Author: Jenne 
Type: Update 
Category: LSC 
Subject: Arm absl length data taken 

[Katrin, Jenne]

We took the data for the new absolute length measurement of both arms, after the latest vent and move.  We will analyze soonly.  We had done a round of analysis,  but then Koji pointed out that our data wasn't so clean because the whitening filters were on (and saturated the ADC).  We now have the data (but not the analysis) for the better data with the WF off.

So our dirty-data preliminary number for the X arm is 37.73meters, which is 14cm different from our old length.  We were supposed to move by ~20cm, so....either this measurement is bad because the data sucked (which it did), or we are 6cm off.  Or both.

I'll do another analysis with the clean data for both arms later today/tomorrow.

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