Monday, November 07, 2016, 13:29

UO2/C green was prepared Nov 3rd, 2016.

This is the first cast made with the new batch of UO2 [but from the same purchase as the last batch]

The cast peeled off the glass nicely Nov 4th, 2016 and finished drying over the weekend.

Some materials were stuck on the WC jar wall and balls, consistent with every time.

Initial UO2 powder used = 50.16g (Inventory R-01032A, UO2 + bottle = 1078.15g before use)

Graphite powder used = 10.03g

Green cast dried UO2/C + organic mass = 60.91g 

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

The Ta-target boat was wrapped with 3-layers of heat shield and installed in evap1 today.

Chamber is currently pumping down, IG1 = 2.4e-5 Torr.

Target boat will be ramped up to 520A at the rate of 0.1A/min.

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

 Tuesday, November 08, 2016, 07:43

IG1 = 2.4e-6 Torr

Tapped up to 35A, 0.50V

Waited ~50min, vacuum stable.

IG1 = 1.3e-5 Torr

Initiating auto-ramp