Wednesday, September 18, 2019, 07:48

A TaC coated target container  was loaded with a graphite cartridge with UCx

The target container has 3 heat shields

IGP1 = 9.3e-6 Torr

Autoramp set up to:

TGHT= 0.2 A/min to 438 A (same current used to reach 1900C in evap2 when sintering TaC coating - elog-455 evap2)

TBHT= 0.1 A/min 230 A

The limits are:

Good vacuum 5e-5 Torr

Bad vacuum 8e-5 Torr

Wednesday, September 18, 2019, 09:55

The autoramp where changed to 1 A/min on both the TGHt and the TGHT.

 Wednesday, September 18, 2019, 21:06

After 4 hours at TGHT = 4.15 V, 437.76 A and TBHT = 2.77 V, 228.31 A (and pressure of 1.07e-5 Torr)

The autoramp was set to TGHT = - 1 A/min and TBHT = -0.5 Torr

Tuesday, September 29, 2019, 14:05

 The EVAP1 was vented with Ar and the target was removed, 

The target was directly assembled after removing it from EVAP1

Finally, the assembly was transferred to the glove box