Thursday, July 19, 2012, 17:09

UO2/C green was prepared on June 13, 2012. 

UO2 powder used = 50.32g (Inventory R-00835A UO2 + bottle = 946.48g left)

Graphite powder used = 10.00g

The green was rolled and wrapped in a piece of graphite sheet.

The target boat was wrapped with 3 Ta-heat shield and installed in the Evap#1. 

The chamber is currently being pumped down.

 Friday, July 20, 2012, 09:50

IG1 currently at 6.2e-6 Torr, BP @ 31mTorr. 

The target will be ramped up to 520A at 0.1A/min. 

Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.

TGHT tabbed up to 50A.  Not much of change in the vacuum.

Initiated autoramping..

Friday, July 20, 2012, 10:18  

TGHT tripped up at 51A due to high vacuum.  

Lowered TGHT to 30A and begin auto ramping.  Pressure is holding at 7e-5 Torr. 

 Wednesday, July 25, 2012, 11:57

TGHT has reached to 100A, and the vacuum is starting to come down from the high limit, 5e-5 Torr. (see attachment#1).  

The organic burn-off is almost to complete and the carbonization process will begin soon. 

Tuesday, August 07, 2012, 12:18

The carbonization process is completed.  The target heater reached to 520A (local 515A,5.17V), vacuum at 4.0 e-6 Torr. (see attachment #2)

Cooling down is in process at 2A/min.

 Tuesday, August 07, 2012, 17:44

TGHT has reached to 0A.  IG currently @ 1.3e-6 Torr, BP @ 34mTorr. 

The chamber will be vented with Ar gas tomorrow and the UC2 flakes will be transfer to the Ar-glove box.