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Message ID: 188     Entry time: Thursday, February 01, 2018, 13:15
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 _#8 

 Thursday, February 01, 2018, 12:59

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

28 discs corresponded to cats#1 and 7 discs to cast#2

35 x UO2/C circles = 3.42 g

Graphite container = 6.96 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.


 Friday, February 02, 2018, 13:18

Initial IGP1 = 4.82x10e-7 Torr

Tapped up entire process manually to 520A in 30 min

TGHT = 520 A, 5.63 V

Vacuum coming down nicely indicating carbonization process complete 

Will remain at max setpoint for 4 hrs to ensure full carbonization before cooling down.


 Friday, February 02, 2018, 16:57

Initiating auto-cool at 2.0 A/min 


Monday, February 05, 2018, 17:23 

Vented with Argon and removed form evaporator 1

Attachment 1: Carbonization-Batch8-020218.docx  72 kB  Uploaded Monday, February 05, 2018, 12:05
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