Wednesday, April 26, 2023, 09:32

LP FEBIAD loaded with 367 TiC discs and 4 TiC removable discs for analyses

50 packs of 5 and the rest are singles

TaC coated (sintered) springs placed at both ends

Initial total Weight = 521.83 g

Initial heating @ 1A/min to 400 A on TGHT and 280A on TBHT

OMEGA slope = 0.99

Vacuum limits up to 200A:  3.0e-05 Torr -- 5.0e-04 Torr

Vacuum limit up after 200A: 3.0e-05 Torr -- 5.0e-05 Torr

No Ta heat-shields used

Initial IGP1 = 4.1e-07 Torr

Wednesday, April 26, 2023, 09:49

Starting initial ramp up to 200A on both TGHT and TBHT @ 1A/min

Wednesday, April 26, 2023, 12:50

Around 120A on TGHT, the pressure started to slowly drop.  First outgassing done.

Wednesday, April 26, 2023, 14:03

IGP1 = 6.0 e-05 Torr

TGHT = 200 A, 2.7V

TBHT = 200 A, 2.6 v

OMEGA = Below lower limit

Waiting for pressure to fall below 5e0-5 Torr.  Will change bad vacuum to 5.0e-05 Torr and then continue ramping @1A/min to 400 A on TGHT and 280 A on TBHT.

Wednesday, April 26, 2023, 14:13

IGPI= 4.2 e-05 Torr

starting ramping to 400 A on TGHT and 280A on TBHT 

Wednesday, April 26, 2023, 14:26

The IGP1 pressure just fell below 3.0e-05 Torr and ramping has resumed

Wednesday, April 26, 2023, 14:42

pressure hovering around good vacuum so very slow progress.

Wednesday, April 26, 2023, 15:12

TGHT= 223 A, 3.1 V

TBHT = 226 A, 3.0 V

Set ramp rate is 1A/min but real rate is slightly less than 0.5A/min due to pressure fluctuation.