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Message ID: 2582     Entry time: Fri Jun 4 16:15:00 2021
Author: Radhika 
Type: DailyProgress 
Category: Cryo vacuum chamber 
Subject: Cooldown from 6/2-6/4 

I extracted cooldown data from the CTC100 USB around 1pm today (~50 hours of cooldown). I've attached a log plot below. The heater RTD seemed to be behaving weirdly at the beginning, but soon stabilized and cooled as expected.

I estimated the time constant for the workpiece: 50 hr/ (300K - 90K) = 0.24 hr/K =  ~860 s/K

 

 

Attachment 1: cooldown_6-2_6-4.png  108 kB  Uploaded Fri Jun 4 17:27:20 2021  | Hide | Hide all
cooldown_6-2_6-4.png
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