WE DID NUCLEAR FUSION

The idea of fusion is to coheres multiple atoms to become a singular atom. this can be done through collision or through gently manipulating the orbitals and the gaps between electrons of one atom to coincide with the orbitals and the alignment of the other atom's electrons, at which point the repulsion between atoms is reduced greatly if not completely, and the nuclei are permitted to come within the electron sphere of each other.  If done properly one could conceivably coax many thousands of atoms into the same volume of a single atom without intense heat or fast collisions.

your central sphere as seen in this project, induces too many contradictory paths of electromagnetic ripples and is a major hinderance to the process.

to improve cohesion, I would recommend building six out/input feed loops, (such as found in a magnetron) in a configuration that they do not touch each other, but they form a directional electron flow in a somewhat (S orbital) pattern. think six circles with an opening in each one, the current enters the positive lead and exits the negative lead making a single loop that is interrupted by the gap between the leads. each of these loops will come into the chamber from a different side. none will touch another. but it will appear as if you formed a cube out of circles.
the current that you  feed into the lines needs to be adjustable, therefore a rheostat or variac will be necessary for dialing the voltage in and out to get a proper reaction. for this experiment you will want high voltage, and high Hertz, high amperage... may not be necessary.

You will, for best results want the housing of your vacuum chamber to have a highly Paramagnetic property so as to duplicate the moving magnetic waves inside the chamber pushing them back toward the center, likewise reducing the amount of plasma that comes in contact with the walls.. 

I am rather interested in many aspects of physics and do not believe most understand that reality they are trying to describe with the current analysis and application of mathematics to the design of particle structure and the universe at broad.