Tuesday, April 26, 2016, 13:32
Container coated with TaC using 'flushing technique'.
Wrapped with 3 x Ta heat shields, incl center block - new method of each layer being one long single Ta foil covering entire container incl center block
Currently pumping down in evap2
Wednesday, April 27, 2016, 10:25
IGP1 = 2.6e-7 Torr.
HS water valves opened, no leaks detected.
Tapped up manually to 35A.
Waited ~35min
Vacuum stable, IGP1 = 6.7e-7 Torr
Initiated auto-ramp at 0.2A/min for the TGHT with a final setpoint of 400A
Final desired temperature = 1900C
Thursday, April 28, 2016, 14:41
Previously TBHT not on when sintering IGLIS container [since no ionizer tube] - John decided will turn on for this round
Tapped up TBHT manually to 140A, 1.69V
IGP1 = 4.5e-7 Torr
OMEGA = 1635C
TGHT = 382A, 5.8V
Initiating auto-ramp of TBHT at 0.1A/min with a final setpoint of 230A.
Friday, April 29, 2016, 08:40
IGP1 = 2.22-7 Torr
TGHT = 400A, 6.1V
TBHT = 233A, 2.9V
OMEGA = 1719C
Tapping up manually to OMEGA = 1900C
Friday, April 29, 2016, 15:22
IGP1 = 3.0e-7 Torr
TGHT = 460A, 7.52V
TBHT =230A, 2.93V
OMEGA = 1904C
Target container has remained at max temperature setpoint of 1900C for 4.5hrs.
Initiating auto cool for TGHT and TBHT at 2.0A/min and 1.0A/min respectively.
Monday, May 02, 2016, 08:35
Vented in air and opened up this morning.
Container looks good.
See attached photos.
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