Tuesday, September 08, 2020, 20:44
A P2N oven with three heat shields, loaded with a graphite container filled with UO2/C ring-discs was set in the EVAP1
EVAP1 is currently being evacuated.
Wednesday, September 09, 2020, 10:11
IGP1 = 4.7e-6 Torr
Good vacuum 1e-1 Torr
Bad vacuum 5e-1 Torr
Autoramp set to 1A/10s to 150 A.
Wednesday, September 09, 2020, 10:50
TGHT = .32 V, 149.8 A
IGP1 = 6.5e-5 Torr
Autoramp set to 1A/10s to 200 A
Wednesday, September 09, 2020, 11:00
TGHT =0.46 V, 200 A
IGP1 = 6e-4 Torr and going up
good vacuum = 5e-2 Torr
bad vacuum = 1e-2 Torr
autoramp set to 1A/10s to 250 A
autoramp stopped at 215 A, since pressure kept increasing, the current was manually decreased to 180 A.
Wednesday, September 09, 2020, 11:16
TGHT = 0.4 V, 179.7 A,
IGP1 = 8.5e-4 Torr an going down
good vacuum = 5e-2 Torr
bad vacuum = 1e-2 Torr
autoramp set to 1A/30s to 200 A
Wednesday, September 09, 2020, 11:32
TGHT = 0.46 V, 200.2 A,
IGP1 = 3e-3 Torr an going down
good vacuum = 5e-2 Torr
bad vacuum = 1e-2 Torr
autoramp set to 1A/30s to 300 A
Wednesday, September 09, 2020, 11:38
IGP1 = 1e-3 Torr
Since the pressure was decreasing, the ramp was stopped at 210 and changed to 1A/10s to 300 A, vacuum limits remained the same
Wednesday, September 09, 2020, 11:53
The pressure reached the bad vacuum limit 1e-2 Torr and stopped
After ~8min the pressure limits were changed to:
good vacuum = 5e-2 Torr
bad vacuum = 1e-1 Torr
Wednesday, September 09, 2020, 12:05
IGP1 = 1.15e-3 Torr
Autoramp set to 2.5 A/10 s to 700 A
Wednesday, September 09, 2020, 12:36
Pressure increased! and ramp paused at 685 A
re-started autoramp to 700 A at 1A/10s
Wednesday, September 09, 2020, 13:56
Pressure kept increasing after 700 A, so autoramp was set to 750 A at 1A/10s
Pressure kept increasing
At 750 A pressure started reducing, autoramp was set to 760 A at 1A/10 s
System tripped suddenly (Gelo was notified)
The carbothermal reduction seemed complete |