Short oven loaded with additional hardware are spacers into the flex-line HS.
A Ta short tube was wrapped with 3 tantalum foils,
a tantalum cap was inserted in both sides of the Ta tube, the caps weren't sealed.
The tube was set in the EVAP2
Wednesday, August 12, 2020, 11:48: Electrical check in EVAP 2:
Target to HS @ 563V
Leg to leg above bracket
TGHT A @ 10A: 1.332 mOhm
TGHT B @ 10A: 1.300 mOhm
Leg to leg w/ bracket
TGHT A @ 10A: 1.490 mOhm
TGHT B @ 10A: 1.491 mOhm
Wednesday, August 12, 2020, 12:08: Roughing.
Wednesday, August 12, 2020, 2:08: Turbo.
Thursday, August 13, 2020, 09:14
IGP1 = 7.9e-7 Torr
A leak check was performed, no leak detected.
TGHT power supply on.
Thursday, August 13, 2020, 10:03
IGP1 = 7.7e-7 Torr.
The current was tapped to 50 A
Autoramp set to 1 A each 10 s to 200 A
Good vaccum 3e-5 Torr
Bad vacuum 5e-5 torr
Thursday, August 13, 2020, 10:47
Autoramp reached 200 A
TGHT = 200.25 A, 2.38 V
IGP1 = 1.58e-6 Torr
Thursday, August 13, 2020, 11:07
TGHT = 200.25 A, 2.38 V
IGP1 = 9.66e-7 Torr
Target is shinning dimly
Omega reads 1033 +-50 degC
ARIEL pyrometer is installed in the back of the EVA2 to measured the body temperature of the oven
Thursday, August 13, 2020, 15:30
The connection of the pyrometer with the software was not possible to establish and delay the ramp up of the oven
Friday, August 14, 2020, 10:47
Restarting experiment,
IGP1 = 4.24e-7 Torr
TGHT = 0 A, ) V, (TGHT was ramped down)
Autoramp set to 1 A each 10 s to 200 A
Good vaccum 3e-5 Torr
Bad vacuum 5e-5 torr
Friday, August 14, 2020, 11:48
Target is shinning dimly
Omega reads 1033 +-50 degC
Autoramp set to 1 A each 10 s to 250 A
Autoramp set to 5 A each 60 s to 450 A
Friday, August 14, 2020, 13:51
TGHT = 6.46 V, 450.13 A
IGP1 = 2.32e-6 Torr
Omega = 1931 °C (slope 0.99)
ARIEL pyrometer = 1504.5 °C (slope 0.929)
Friday, August 14, 2020, 14:06
Autoramp = 5A each 2 min until 500
Autoranp stopped at 475 A (EPICS TGHT = 6.87V, 476.663A)
Omega = 2013 °C
ARIEL pyrometer = 1547 °C
Friday, August 14, 2020, 17:34
Autoramp is set to 5A each 2 min until 500
TGHT = 7.403 V, 500.006 A,
omega = 2104 C
AP= 1586 C
Friday, August 14, 2020, 17:49
Autoramp is set to 5A each 2 min until 550
Autoramp stopped by itself at 545 A instead of 550 A
TGHT = 8.11V, 547.65A,
omega = 2214C
AP= 1656.8 C
IGP1=6.8e-6 Torr
Friday, August 14, 2020, 18:13
Autoramp is set to 10A each 2 min until 600
Friday, August 14, 2020, 21:42
TGHT = 9.213 V, 597.8 A,
IGP1 3.27e-6 Torr
Omega = 2380 °C
Ramping down at 5 A per min to 475 A
Monday, August 17, 2020, 09:02
TGHT = 6.741 V, 471.6 A,
IGP1 = 3.46e-7 Torr
Omega = 2052 6°C
Proceeded to ramp down at 5 A per min to 0 A |