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Entry  Tue Sep 14 15:17:03 2021, Stephen, DailyProgress, Cryo vacuum chamber, Chamber up to air, lids removed 
    Reply  Wed Sep 15 08:22:32 2021, Aidan, DailyProgress, Cryo vacuum chamber, CONTAMINATION: Black paint flecks throughout chamber IMG_4686.jpgIMG_4687.jpgIMG_4689.jpgIMG_4690.jpg
Message ID: 2667     Entry time: Wed Sep 15 08:22:32 2021     In reply to: 2665
Author: Aidan 
Type: DailyProgress 
Category: Cryo vacuum chamber 
Subject: CONTAMINATION: Black paint flecks throughout chamber 

I was setting up for some characterization measurements of the JPL PD and I noticed that there are flecks of black paint all through the chamber. There were a couple of visible bare sections on the wall of the inner shield where paint had been removed.


Monday I completed the vent that Aidan had started by turning off the cryocooler. During the afternoon I turned off the pumps, unbolted the chamber lid, and removed the radiation shield lids.

Next, Aidan was going to run some characterization measurements and determine whether to swap the diode or repeat with A1.


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