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Tuesday, July 30, 2019, 15:33
ZrC backup Target 12.6 cm disc length, 465 g total weight (no springs and no analysis discs).
Total weight= 470 g.
20 Analysis discs weighing 2.368 g (10 at each end).
Two springs (one at each end).
OMEGA slope initially = 0.990 (was changed to 1.09 at higher Temperature as per eLog #434
Target is being pumped down.
Wednesday, July 31, 2019, 09:31
Desired temp = 1900 C, Auto ramping TGHT at 0.1 A/min to reach 400A then TGHT will be tapped up accordingly to reach desired temperature. (eLog 434)
TBHT will be set fixed at 230A (max). TBHT at 0.1 A/min to reach 230A.
Note: Initially both TGHT and TBHT will be ramped up at 0.3A/min up to 30A each.
IGP1= 1.35e-06 Torr
Good vac at 3.00-5 Torr
Bad vac at 5.0e-5 Torr.
Wednesday, July 31, 2019, 12:02
At 30A pressure was increasing a bit fast, therefore, the ramp was changed to increments of .1A every 120s (.05A/min).
Thursday, August 01, 2019, 08:42
TGHT = 54.7
TBHT = 54.3
IGP1 = 3.86e-5 Torr
Will changer heat ramp to .1A/min by changing wait interval to 60s
Tuesday, August 06, 2019, 07:14
OMEGA = 1212 C
TGHT = 344.7 A, 5.79 V
TBHT = 233 A, 4.17 V
IGP1 = 1.05 e-06 Torr
Autoramping to 400A at increments of 0.1A/min
Tuesday, August 06, 2019, 09:50
OMEGA = 1233 C
TGHT = 360 A, 6.05 V
TBHT = 233 A, 4.18 V
IGP1 = 1.21 e-06 Torr
increasing autoramp increments to .5A/min
Tuesday, August 06, 2019, 12:27
OMEGA = 1356 C
TGHT = 400.6 A, 6.92 V
TBHT = 233.8 A, 4.20 V
IGP1 = 1.95 e-06 Torr
Autoramping to 430 A on TGHT at 0.5 A/min
Tuesday, August 06, 2019, 14:02
OMEGA = 1447 C
TGHT= 430.9 A, 7.66V
TBHT = 233.2A, 4.2 V
IGP1= 2.01e-06 Torr
Autoramping to 440 A on TGHT at 0.5 A/min
Wednesday, August 07, 2019, 09:10
OMEGA = 1548
TGHT = 441.56 A, 8.2 V
TBHT = 233.3 A, 4.2 V
IGP1 = 6.21e-07 Torr
Manually ramping up to 1900C @ 1A/min
Wednesday, August 07, 2019, 09:43
Changed OMEGA slope to 1.09 as per eLog #434
OMEGA reads 1773 C @ TGHT 451A, 8.4V
IGP1 = 7.02 e-07
Wednesday, August 07, 2019, 10:56
OMEGA = 1903 C
TGHT = 483.5 A, 9.2V
TBHT = 233.3 A, 4.3V
IGP1 = 1.7 e-06 Torr trending down
Wednesday, August 07, 2019, 11:40
OMEGA = 1914 C
TGHT = 483.5 A, 9.3V
TBHT = 233.3 A, 4.3V
IGP1 = 1.5 e-06 Torr trending down
Decrease TGHT current to 480.4 A
Wednesday, August 07, 2019, 13:04
OMEGA = 1918 C
TGHT = 480.3 A, 9.4V
TBHT = 233.3 A, 4.3V
IGP1 = 1.28e-06 Torr
Decrease TGHT current to 474.5 A
Wednesday, August 07, 2019, 13:26
OMEGA = 1904 C
TGHT = 474.8 A, 9.3V
TBHT = 233.3 A, 4.3V
IGP1 = 1.11e-06 Torr
Wednesday, August 07, 2019, 13:47
OMEGA = 1912 C
TGHT = 474.8 A, 9.3V
TBHT = 233.3 A, 4.3V
IGP1 = 1.10e-06 Torr
Decrease TGHT to 471.8 A
OMEGA temperature went down to 1904 C
Wednesday, August 07, 2019, 14:26
OMEGA = 1911 C
TGHT = 471.8 A, 9.3V
TBHT = 233.3 A, 4.3V
IGP1 = 1.00e-06 Torr
Decrease TGHT to 469.0 A
OMEGA temperature down to 1904C
Wednesday, August 07, 2019, 15:45
OMEGA = 1912 C
TGHT = 468.8.8 A, 9.2V
TBHT = 233.3 A, 4.3V
IGP1 = 9.2e-07 Torr
Decrease TGHT to 466.0 A
OMEGA temperature down to 1903C
Wednesday, August 07, 2019, 22:09
OMEGA = 1924 C
TGHT = 466.8. A, 9.3V
TBHT = 233.3 A, 4.3V
IGP1 = 7.6e-07 Torr
Cooling at 2A/min TGHT to 456.0 A, 9.0 V and 1A/min TBHT to 230.1 A, 4.2 V
OMEGA = 1900 C
Will allow Pressure to stabilize
Thursday, August 08, 2019, 06:54
OMEGA = 1919 C
TGHT = 456.9 A, 9.1V
TBHT = 230.3 A, 4.2 V
IGP1 =5.7e-07 Torr
Cooling at 2A/min TGHT and 1A/min TBHT
Thursday, August 08, 2019, 13:30
Target removed from Evap2. Awaiting inspection by John.
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