Thursday, April 13, 2017, 12:01
Pellets made this morning and weighed.
Placed in a graphite boat which is placed inside a previously TaC coated boat.
Boat is wrapped with 3x Ta heat shields.
Loaded into evap2.
Chamber currently pumping down.
Tuesday, April 18, 2017, 13:53
HS water valves were opened this morning, no leaks detected.
Tapped up manually to 100A, 1.28V
Vacuum stable.
IGP1 = 3.63e-6 Torr.
Initiating auto ramp at a rate of 1.0A/min to 150A
Final desired temperature of 1100C
Tuesday, April 18, 2017, 14:57
TGHT = 150A, 2.08V
Still no temperature reading on OMEGA.
Vacuum stable, IGP1 = 1.16e-6 Torr.
Initiating auto ramp at the same rate of 1.0A/min up to 200A.
Tuesday, April 18, 2017, 15:56
TGHT = 200A, 2.91V
OMEGA = 990C
IGP1 = 8.59e-7 Torr
Tapping up manually to 1100C...
Wednesday, April 19, 2017, 08:34
TGHT = 235A, 3.47V
OMEGA = 1090C
IGP1 = 1.6e-7 Torr.
Has remained at ~1100C since 16:30 yesterday.
Intitiating auto-cool at 2.0A/min
Thursday, April 20, 2017, 08:40
Vented in air and taken out yesterday.
Pellets look good.
No obvious colour change.
|