The copper tubes to be used in the TM3 test piece may have flux inside them from soldering the end caps on. There are holes along the length for outgassing, and we will try to bake them out in the test stand before installing them. There is still a dummy bake out target installed there, see the photo for how the tubes are loaded in. TGHT ramping started around 3pm.

I had to remove the grounding connections from the TGHT feedthroughs for this, so I redid them such that the tube is attached to the EZL. This target has no tube, so the connection between the tube and target is just through the 100Ohm resistor.

We must re-do the grounding before proceeding with HV tests.

Wednesday, December 09, 2020, 19:38 :

Target heater ramp down started. See attachment for vacuum progression during bake out.