Monday, February 08, 2021, 17:00: Installed brackets w/ Ta wire and a small piece of Re to test voltage drop.

Rough down, TP on. Waterlines open.

Tuesday, February 09, 2021, 06:44: Vacuum @ 8.63e-07T.

Tuesday, February 09, 2021, 06:45: Shut TP & roughing pump ff. Valves are close. Ready for power outage.

Tuesday, February 09, 2021, 11:30: BP1 & TP1 back on.

Tuesday, February 09, 2021, 11:37: PS on. Vacuum @ 9.7e-06T & continuing down.

micron slope 0.98

Tuesday, February 09, 2021, 16:01 Pressure 7.26e-7 Torr

aiming at a temperature of 2000 degC on the wire; wire is not in the visual range of pycnometer; simulations of the system indicate that wire will be at 2000 degC at 60 W, hence current will be increased slowly.

Rate: 0.1 A/60 s to 10 A

Tuesday, February 09, 2021, 16:47 Tendence showed that at 5 A the power will be ~10 W, final ramping step was updated accordingly.

Tuesday, February 09, 2021, 16:49 Pressure dropping a bit: Current reading 7e-7 Torr

Tuesday, February 09, 2021, 17:09Pressure going down, curent will be ramped down at 0.2 A/min

Pressure: 6.958e-7 Torr, TGHT: 5 A, 2.748 V, omega is reading 1625 degC somewhere somehow, wire will stay at this conditions for 10 min to see  if there is a pressure or voltage change.

Tuesday, February 09, 2021, 17:16 voltage and temperature are slowly increasing  2.789 V, and 1688 degC respectively.

Tuesday, February 09, 2021, 17:32 Voltage signal is noisy but it seems like the voltage is not increasing anymore, preassure has remained constant, wire is glowing, 1100 degC with manual pyrometer.

Tuesday, February 09, 2021, 17:44 TGHT: 2.81 V, 4.95 A, IGP1 6.63e-7 Torr. current will be increased manually at 0.2 A steps. At first step voltage is stable.

Tuesday, February 09, 2021, 18:13 TGHT: 6.6A, 3.981V (~26W), Omega 1741 degC and manual pyrometer ~1300 degC

Tuesday, February 09, 2021, 18:28 TGHT: 8A, 5.121V (~40W), omega 1816 degc, 1390 degC with manual pyrometer, step changed to 0.4A.

Tuesday, February 09, 2021, 18:34 TGHT: 8.8A, 5.88V (50W), omega 2008 degC, 1500 manual pyrometer

Tuesday, February 09, 2021, 18:56  TGHT: 9.6A, 6.64V, manual pyrometer 1800 degC, omega 2042 degC, wire is shinny enough for micron 2092 degC.

Tuesday, February 09, 2021, 19:01TGHT: 10A, 7V, ~1800 degC manual pyrometer, omega 2123 degC, micron 2152 degC

Tuesday, February 09, 2021, 19:15 TGHT: 10.5A, 7.47V, 2150 degC Omega, 2165 degC, ~1800 degC manual

Tuesday, February 09, 2021, 19:23 TGHT: 11A, 7.93 V, 2188 omega, 2210 deC micron

 Tuesday, February 09, 2021, 19:29 TGHT: 11.5A, 8.37V, 2188 omega, 2210 deC micron

Tuesday, February 09, 2021, 19:33 TGHT: 12A, 9V, 2325 degC, 1900 degC manual, the wire changed shape and the preassure increase a bit , micron was readjusted to read, micron 2454 degC. Wire might be touching tube, only one more amper will be imputed.

Tuesday, February 09, 2021, 19:55 TGHT 13A, 9.865 V, 2404 degC omega , 2558 degC micron, manual pyrometer still reads 1800 degC, pressure increased with the power increment, bbut it seems like the wire touching the tube so no more current will be imputed.

Tuesday, February 09, 2021, 20:08 started ramping at -0.2A/min

Wednesday, February 10th , 20211, 10:00 System unloaded from EVAP2, wire has straightened, it has not sintered to the copper brackets, system is clean there is no evidence of coating.