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Entry  Wednesday, January 10, 2018, 14:44, Marla Cervantes, UO2/C, 40282-1, TARGET BOAT, In progress, Carbonizing UO2/C discs for 1stepUCx in graphite sample container _#4 
    Reply  Friday, January 12, 2018, 07:46, Laura Lambert, UO2/C, , TARGET BOAT, In progress, Carbonizing UO2/C discs for 1stepUCx in graphite sample container_#4 
       Reply  Thursday, January 18, 2018, 11:56, Marla Cervantes, UO2/C, 40282-2 , TARGET BOAT, Done, Carbonizing UO2/C discs for 1stepUCx in graphite sample container TP1-off_#4 Carbonization-Batch4-110118-TP_off.docx
Message ID: 177     Entry time: Friday, January 12, 2018, 07:46     In reply to: 176     Reply to this: 179
Author: Laura Lambert 
Target Material: UO2/C 
Target Oven W.O#:  
Source: TARGET BOAT 
Status: In progress 
Subject: Carbonizing UO2/C discs for 1stepUCx in graphite sample container_#4 

Marla Cervantes wrote:

 Wednesday, January 10, 2018, 14:44

Circles from cast 1 were used, the same as the last round of 1stepUCx [see elog i.d. 164]

A 14mm punch was used to punch out circles from the cast.

35 circles were packed into a graphite sample container.

35 x UO2/C circles = 5.75 g

Graphite container = 5.38 g

Graphite container is placed inside a target boat.

Boat previously coated with TaC and sintered.

Ta-target boat is wrapped with 3-layers of heat shield and installed in Evap1.

Chamber currently pumping down.

 Friday, January 12, 2018, 07:43

IGP1 = 0.0266 Torr

TGHT = 520A, 5.92V

Voltage has been climbing consistently since it has reached it's max setpoint, gone up ~0.8V in ~18hrs

Carbonization complete.

Initiating auto-cool at 2.0A/min

Will update later with more information on this process.


 Friday, January 12, 2018, 09:47

Turned the turbo pump back on, to ensure safe cooling.


 

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