Wednesday, July 12, 2017, 17:06

Target container was previously coated with TaC and sintered.

Container is wrapped with 3 layers of Ta-heat shield, including the center block

The target consists of 400 discs of UCx with 13.60cm in length [8 packs of 5 + 360 single discs/ 2.6cm on left side, 2.8cm on right side wrt ionizer into page].

Discs in target are arranged as follows: 1pack / 60singles / 1pack / 60singles / 1pack / 60singles / 2packs / 60singles / 1pack / 60singles / 1pack / 60singles / 1pack

A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down.

The right side is open with a TaC coated spring to help hold materials in.

The chamber is currently pumping down.

TGHT will be ramped up to 450A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog373 evap2]

Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac.

Thursday, July 13, 2017, 12:49

Tapped up manually to 35A.

Waited ~2hrs, vacuum stable: IG1 = 2.64e-6 Torr

Initiating auto-ramp.