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Entry  Thu Feb 24 10:44:06 2022, Radhika, DailyProgress, Cryo vacuum chamber, Double copper bar cooldown rerun started 02/23 IMG_3095.jpgIMG_3096.jpgIMG_3083.jpgIMG_3087.jpgIMG_3092.jpg
    Reply  Tue Mar 1 15:59:34 2022, Radhika, DailyProgress, Cryo vacuum chamber, Double copper bar cooldown rerun started 02/23 
       Reply  Fri Mar 4 13:18:09 2022, Radhika, DailyProgress, Cryo vacuum chamber, Double copper bar cooldown rerun started 02/23 02-24_cooldown_data.pdf02-24_cooldown_data_comparison.pdfcooldown_0224_bestfit.pdf
Message ID: 2726     Entry time: Tue Mar 1 15:59:34 2022     In reply to: 2724     Reply to this: 2729
Author: Radhika 
Type: DailyProgress 
Category: Cryo vacuum chamber 
Subject: Double copper bar cooldown rerun started 02/23 

The heater was turned on on Tue, 3/1 at 4pm, with control setpoint 123K.

*UPDATE: After checking a few hours later, I noticed the test mass temperature hadn't risen, and the heater power was reading nan. When I initially turned the heater on, I watched the power ramp up to 22W (max power limit) and the test mass temperature start to rise. I wonder if somehow the lead pins shorted after it was turned on. For now I have turned the heater output off and will check on this after warmup.

The cryocooler was turned off at 5:45pm.

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