Tuesday, March 09, 2021, 11:54
Container coated with TaC and wrapped with 3 Ta heat shields.
Desired temperature= 1900 C, Omega Slope set = 0.990, Auto TGHT at 0.2A/min to reach 400A, TGHT will be increased accordingly to reach desired Temp.
TBHT will be set fixed at 230 A max).
Good vac at 3.00e -5 Torr
Bad vac at 5.00e-5 Torr
Chamber pump down
Wednesday, March 10, 2021, 08:32
IGP1 = 2.6 e -07 Torr
Start autoramp @ 1A/min to 40 A on both TGHT and TBHT
***Autoramp aborted due to work on EF12 affecting EVAP2***
Will have to resume Thursday or Friday
Saturday, March 13, 2021, 7:54
IGP1= 3.8e-07 Torr
Initiate heating @ 0.5A/min TBHT and TGHT to 60 A
Saturday, March 13, 2021, 23:01
IGP1 = 2.7e-07Torr
TGHT = 60.5A, 0.7V
TBHT= 60.0A, 0.7V
Initiate ramp @ 1 a/min to 400 A on TGHT and 230A on TBHT
Sunday, March 14, 2021, 08:45
IGP1= 8.2e-07 Torr
TGHT = 400A, 5.6V
TBHT = 232.9A, 3.0V
OMEGA = 1142 C
Continue ramping to 460 A on TGHT at 1a/min
Sunday, March 14, 2021, 10:11
IGP1 = 1.0 e-06 Torr
TGHT= 460.4 A, 6.5 V
TBHT = 232.9 A, 3.0 V
OMEGA = 1239 C
Will ramp up to 500 A at 1a/min on TGHT
Sunday, March 14, 2021, 10:53
IGP1 = 1.3 e-06 Torr
TGHT= 495 A, 7.2 V
TBHT = 232.9 A, 3.0 V
OMEGA = 1316 C
Will ramp up to 600 A at 1a/min on TGHT
Sunday, March 14, 2021, 12:45
IGP1 = 3.0 e-06 Torr
TGHT= 604 A, 9.1 V
TBHT = 232.9 A, 3.1 V
OMEGA = 1610 C
Will ramp up to 660 A at 1a/min on TGHT
Sunday, March 14, 2021, 17:01
IGP1= 2.4e-06 Torr
TGHT = 664 A, 10V
TBHT = 232.9 A, 3.1V
OMEGA = 1733 C
tapping TGHT to 740 A
OMEGA = 1883 C
Sunday, March 14, 2021, 21:45
IGP1= 3.1e-06 Torr
TGHT = 744A, 11.5V
TBHT = 232.9 A, 3.2V
OMEGA = 1875 C
Start cooling TGHT @-3A/min and TBHT @-1A/min
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