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Friday, September 25, 2020, 10:30
Target boat with a layer of niobium foil on the bottom is used to heat up Nb samples to 1400 C for 4 hrs.
OMEGA slope = 0.99
The niobium samples are wrapped in two layers of Nb foil.
Boat is wrapped with 2 layers of Ta foil, careful to avoid touching samples.
Friday, September 25, 2020, 10:35
Manually ramped TGHT to 40 A and kept at that current for approximately 15 minutes.
Then started autoramp at 1A/min up to 100 A
Friday, September 25, 2020, 16:58
IPG1= 4.7e-07 Torr
TGHT =100.0 A, 1.3 V
Start autoramp to TGHT to 300 A @ 2A/min
@ 300A temperature = 1179 C
Friday, September 25, 2020, 20:00
autoramp to 345 A
Friday, September 25, 2020, 20:39
TGHT = 345 A, 5.4 V
OMEGA = 1296 C
IPG1= 8.1 e-07 Torr
Ramp manually to 1400 C
Friday, September 25, 2020, 20:51
reached 1400 C on OMEGA at TGHT = 476 A
Friday, September 25, 2020, 20:59
OMEGA increased to 1410, lowered TGHT to 468 A to get back to 1400 C on OMEGA
Friday, September 25, 2020, 21:40
Lowered TGHT to 463 A, 5.79 V to bring OMEGA to 1400 C from 1404 C
Saturday, September 26, 2020, 00:51
Sample has been at 1400 C for 4 hours.
IGP1= 7.2 e-07 Torr
Cooling at- 2A/min
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