Thursday, October 15, 2015, 15:52

Target container previously sintered with TaC in Evap#2 - Target current at 440A, temp measured at 1900C.  A few tests on the temp measured were done (see Evap#2 elog #251 & 252). 
Note:  This is the new design container with a small back block.

Container is loaded with 245 discs of UC2; measured disc length 7.5 cm

A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down, so the right is open - discs are held on with Ta wire spring.

3 layers of Ta-heat shield is used. 

Target heater will be ramped up to 440A (according to the achieved temperature from Evap#2). 

Ramping rate at 0.1A/min.

Monitor closely on the vacuum around 400A to see if the carbonization process is complete. 

Chamber is currently being pumped down. 

 Friday, October 16, 2015, 10:33

Chamber has pumped down to 2e-6 Torr. 

Stepping up TGHT to 70A/0.23V. 

 Friday, October 16, 2015, 14:55

TGHT stepped up to 70A, pressure went to max 5.7e-5 Torr and it's coming down.

Initated autoramping.  (good vac at 5e-5 Torr, bad at 6.0e-5 Torr)

 Thursday, October 22, 2015, 12:26

TGHT has reached 440A/4.403V and stablized for about 5 hours. 

Pressure started coming down at around 370A which indicated the ending of the carbonization process. 

Currently vacuum is at 5.6e-6 torr. 

Initiated cooling down process at 2A/min.