How is the current passed from the capacitor bank to the cathode/anode through the vacuum chamber? It looks like the whole core is attached to a CF flange, does the flange have pass-through terminals machined into it?
The vacuum chamber is not actually part of the circuit as I understand it. The actual plasma paths are from each of the cathodes to the anode, which conducts all of the plasma’s current during the axial phase rundown. The anode itself is actually shaped more like a circular Tee flange. I know it looks misleading in the gallery :)
The base plate and everything that bolt onto it are at the cap bank’s negative (frame ground) potential. The anode is insulated by a pyrex insulator in this case, but that could just as easily be ceramic or a composite.
The pix showing the tops of the caps show the high voltage plates on top with the anode flange as the bolt circle at the center.