Wednesday, June 03, 2020, 08:11 

A loaded graphite cartridge was set in a tantalum boated and wrapped with 3 tantalum sheets (Friday May 29, 2020)

The set up was installed in the EVAP1 then IEVAP:IGP1 was replaced (elogs 260 and 261).  

Vacuum was turned on after Ion Gauge swap.

IGP1 = 3.6 e-5 Torr

Good vacuum = 5e-2 Torr

Bad vacuum = 5e-1 Torr

Current ramp is 1A per 10s from 0A to 120A

Wednesday, June 03, 2020, 09:59 

After about 20 minutes at 120 A, TGHT tripped again exactly as before.

Will restart ramp at 1A per 10s from 0A to 120A .  Will set good vacuum to 1e-2 Torr

IGP1= 4.3e-05 Torr

Wednesday, June 03, 2020, 10:57

IGP1 =  9e-4 Torr

Pressure peaked around 4e-3 Torr and now trending down

TGHT =120 A

Wednesday, June 03, 2020, 11:23

IGP1=9.5e-5 Torr

Good Vacuum 1e-02 Torr

Bad Vacuum 5e-1 Torr

Starting TGHT ramp to 550 A at 3A per 10s  

Wednesday, June 03, 2020, 14:41

ramp up was good.  TGHT at 550 A since 12:30 pm.  TGHT did not trip. *note adjusted good vacuum.  Ramping takes a little longer but doesn't trigger TGHT shutdown.

Wednesday, June 03, 2020, 22:55

IGP1 =  3.5e-5 Torr

TGHT = 249.4 A, 5.7 V

Start ramp down at -2A per minute to 0 A