I hope this has not already been discused.
I do not have access to these materials.
the design is made by:Multiple rings of hose filled with plasma water.The outer rings will have the lighter gans/elementsThe inner rings will have the heavier gans/elements.Multiple magravs arranged around he circle maybe set at 15 to 20 degrees to kick start the reaction.This might create plasma fields for missing gans/elements.