Logbooks Lab Maintenance Evaporator_1 Evaporator_2 Laser cutter Target Production Test-Stand RH-ISAC RH-Cyclotron RH-Meson Hall RH-Beamlines RH-ARIEL
  Evaporator_1  Not logged in ELOG logo
Message ID: 189     Entry time: Monday, February 05, 2018, 17:26
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 _#9 

Monday, February 05, 2018, 17:24

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

35 x UO2/C circles = 4.59 g

Graphite container = 5.3 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, February 06, 2018, 10:59

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 4 hrs to ensure full carbonization before cooling down.


 Tuesday, February 06, 2018, 14:44

Initiating auto-cool at 2.0 A/min 


 Thursday, February 08, 2018, 10:43

Vented with Ar and removed from EVAP1


 

Attachment 1: Carbonization-Batch9-060218.docx  79 kB  Uploaded Friday, February 09, 2018, 17:23
ELOG V2.9.2-2455