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Message ID: 178     Entry time: Wednesday, January 17, 2018, 13:47
Author: Marla Cervantes 
Target Material: UO2/C 
Target Oven W.O#: 40282-1 
Source: TARGET BOAT 
Status: Done 
Subject: Carbonizing UO2/C discs for 1stepUCx in graphite sample container _#5 

 Monday, January 15, 2018, 13:37

35 circles of 14 mm diameter were packed into a graphite sample container.

35 x UO2/C circles = 5.58 g

Graphite container = 5.22 g

Graphite tube is placed inside a target boat.

Boat previously coated with TaC and sintered.

Ta-target boat is wrapped with 3 new Ta foils for heat shielding and the boat was installed in Evap1.

Chamber currently pumping down.


Tuesday, January 16, 2018, 13:41 

Initial IGP1 = 9x10e-7 Torr

Tapped up entire process manually to 520A in 1.5 hrs

TGHT = 525 A, 5.64 V

Vacuum coming down nicely indicating carbonization process complete 

Will remain at max setpoint overnight to ensure full carbonization before cooling down.


Wednesday, January 17, 2018, 10:30

Initiating auto-cool at 2.0A/min 


Wednesday, January 17, 2018, 4:30

Vented with Argon and removed form evaporator 1

Attachment 1: Carbonization-Batch5-180118.docx  82 kB  Uploaded Tuesday, January 23, 2018, 13:02
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