40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  ATF eLog  Not logged in ELOG logo
Entry  Mon Feb 7 11:57:38 2022, Stephen, DailyProgress, Cryo vacuum chamber, Doubled Thermal Linkage Capacity run started 11 Feb 2022 D2000310_y-004_section_double_linkage_20220207.png
    Reply  Tue Feb 15 11:59:22 2022, Radhika, DailyProgress, Cryo vacuum chamber, Doubled Thermal Linkage Capacity run started 11 Feb 2022 Cu_bar_comparison.pdfcooldown_0211_all.pdf
       Reply  Tue Feb 15 16:54:27 2022, rana, DailyProgress, Cryo vacuum chamber, Doubled Thermal Linkage Capacity run started 11 Feb 2022 
    Reply  Wed Feb 16 11:35:18 2022, Stephen, DailyProgress, Cryo vacuum chamber, Doubled Thermal Linkage Capacity run started 11 Feb 2022 
Message ID: 2721     Entry time: Tue Feb 15 16:54:27 2022     In reply to: 2720
Author: rana 
Type: DailyProgress 
Category: Cryo vacuum chamber 
Subject: Doubled Thermal Linkage Capacity run started 11 Feb 2022 

I've been assuming that the inner shield can be treated as a point mass, but perhaps the thinness make a significant delay between the temperature of the cold plate and the inner shield during the initial cooldown.

Could you model the cold shield to estimate what the temperature gradient would look like during the rapid cooldown? Not full 3D, but something approximate that takes into account the conductivity, thinness, and heat capacity.

ELOG V3.1.3-