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Entry  Mon May 24 15:47:30 2021, Radhika, DailyProgress, Cryo vacuum chamber, Weekend cryo chamber cooling cooling.png
    Reply  Mon May 24 16:49:17 2021, rana, DailyProgress, Cryo vacuum chamber, Weekend cryo chamber cooling PPP.jpg
       Reply  Tue May 25 13:19:41 2021, Radhika, DailyProgress, Cryo vacuum chamber, Weekend cryo chamber cooling 
    Reply  Tue May 25 16:38:17 2021, Stephen, DailyProgress, Cryo vacuum chamber, Weekend cryo chamber cooling --> started warmup cooling_full_20210525.png
       Reply  Thu May 27 16:48:35 2021, Radhika, DailyProgress, Cryo vacuum chamber, Weekend cryo chamber cooling --> started warmup 7x
          Reply  Mon May 31 11:38:13 2021, Radhika, DailyProgress, Cryo vacuum chamber, Weekend cryo chamber cooling 14x
             Reply  Wed Jun 2 20:06:07 2021, rana, DailyProgress, Cryo vacuum chamber, Weekend cryo chamber cooling 
Message ID: 2574     Entry time: Mon May 24 15:47:30 2021     Reply to this: 2575   2577
Author: Radhika 
Type: DailyProgress 
Category: Cryo vacuum chamber 
Subject: Weekend cryo chamber cooling 

Today I pulled the cyro chamber cooling data from the temperature controller. Cooling started on Friday 5/21 around 1:45pm. 

The final temperatures reached at ~3:15pm today were:

outer shield: 253 K

inner shield: 168 K 

heater (off): 151 K 

workpiece: 150 K

The temperature curves (see attached) seem to be leveling off, so I'm not sure things will get too much colder. In the meantime I've reinserted the USB to resume temperature logging. 

Attachment 1: cooling.png  106 kB  Uploaded Mon May 24 16:54:42 2021  | Hide | Hide all
cooling.png
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