40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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Entry  Tue Nov 29 14:22:03 2011, Zach, Update, RF System, EOM temp stabilization performance Screen_shot_2011-11-29_at_1.33.50_PM.pngScreen_shot_2011-11-29_at_1.34.06_PM.pngScreen_shot_2011-11-29_at_1.41.03_PM.png
    Reply  Tue Nov 29 15:25:29 2011, steve, Update, RF System, EOM temp stabilization performance 2days.png
       Reply  Tue Nov 29 18:17:27 2011, Zach, Update, RF System, EOM temp stabilization performance 
    Reply  Tue Nov 29 22:10:18 2011, kiwamu, Update, RF System, RFAM fluctuation reduced RFAM_withEOMheater_edit.png
       Reply  Tue Nov 29 23:03:34 2011, Zach, Update, RF System, RFAM fluctuation reduced 
          Reply  Wed Nov 30 03:01:55 2011, kiwamu, Update, RF System, RFAM fluctuation reduced 
Message ID: 6044     Entry time: Tue Nov 29 22:10:18 2011     In reply to: 6035     Reply to this: 6047
Author: kiwamu 
Type: Update 
Category: RF System 
Subject: RFAM fluctuation reduced 

Quote from #6035

I left the EOM stabilization running overnight, so we can finally see how the EOM temperature stabilization does over long periods of time.

The controller was turned on at ~8:40 UTC, and you can see that the Stochmon signals quiet down a lot right at that time. 

Indeed the fluctuation of the RFAM became quieter with the temperature control ON.

However the absolute value of the RFAMs stayed at relatively high value.

I guess we should be able to set the right temperature setpoint such that the absolute value of the RFAM is smaller.

Here is the calibrated RFAM data (for 5 hours around the time when Zach activated the temperature control last night):

RFAM_withEOMheater_edit.png

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