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Message ID: 197     Entry time: Monday, March 12, 2018, 11:14
Author: Marla Cervantes 
Target Material: UO2/C 
Target Oven W.O#: 40282-2  
Source: TARGET BOAT 
Status: Done 
Subject: Carbonizing UO2/C discs for 1stepUCx in graphite sample container _#12 

 Monday, March 12, 2018, 9:13

35 circles from cast#2 of 14 mm diameter were packed into a graphite sample container.

35 x UO2/C circles = 5.21 g

Graphite container = 6.85 g

Graphite tube is placed inside a target boat.

Boat previously coated with TaC and sintered.

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

Chamber currently pumping down.


 Monday, March 12, 2018, 13:57

Initial IGP1 = 4.79e-7 Torr

Tapped up entire process manually to 520A in 30 min

TGHT = 520 A, 5.32 V

Vacuum coming down indicating carbonization process complete.  

Will remain at max setpoint for 1 hrs to ensure full carbonization before cooling down.


 Monday, March 12, 2018, 14:57 

Cooling down rate used 3 A/10s.


 Tuesday, March 13, 2018, 18:22

Vented with Ar and removed from EVAP1

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