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Entry  Fri Jul 9 20:16:19 2010, rana, Summary, PSL, Things I did to the PSL today: Refcav, PMC, cameras, etc. 
    Reply  Sun Jul 11 20:11:48 2010, rana, Summary, PSL, RC trend after the insulation removal rc.png
       Reply  Thu Jul 15 19:27:04 2010, rana, Summary, PSL, RC trend after the insulation removal Untitled.pnga.pngb.png
    Reply  Mon Jul 12 14:22:36 2010, Jenne, Summary, PSL, Things I did to the PSL today: Refcav, PMC, cameras, etc. 
Message ID: 3232     Entry time: Thu Jul 15 19:27:04 2010     In reply to: 3190
Author: rana 
Type: Summary 
Category: PSL 
Subject: RC trend after the insulation removal 

Untitled.png

As you can see, there was not much (if any) worsening of the laser frequency fluctuation from removing the RefCav insulation. The plots below are zooomed in:

a.pngb.png

I have used the same peak-to-peak scale so that its easy to compare the fluctuations before (LEFT) and after (RIGHT).

As you can clearly see, the laser frequency moves just as much now (the SLOW_DC) as it did before when it had the insulation. Only now the apparent (i.e. fake) RC temperature fluctuations are much larger. So this sensor is fairly useless as configured.

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