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Entry  Wed Mar 20 22:18:28 2013, tara, Notes, RefCav, estimated beat frequency 
    Reply  Fri Apr 5 13:56:01 2013, tara, Notes, RefCav, estimated beat frequency 
       Reply  Sat Apr 6 09:32:35 2013, rana, HowTo, TempCtrl, estimated beat frequency 
          Reply  Mon Apr 8 15:15:06 2013, rana, HowTo, TempCtrl, estimated beat frequency 
             Reply  Sun Apr 14 16:51:21 2013, rana, HowTo, TempCtrl, estimated beat frequency 
Message ID: 1143     Entry time: Sat Apr 6 09:32:35 2013     In reply to: 1142     Reply to this: 1144
Author: rana 
Type: HowTo 
Category: TempCtrl 
Subject: estimated beat frequency 

I would have guessed that you heat both cavities. Unless they are both at an elevated temperature, how can you control their individual temperatures?

The cooling rate (and thus the bandwidth for control) is determined by the steady state temperature. I would guess that each cavity needs to be at least 35 C in order to have some headroom.

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