Injection, containment and heating device for fusion plasmas

A container device for a fusion plasma which has a beam of charged particles accelerating system feeding an ion or plasma beam into a polytron magnetic device. The polytron is formed from a succession of magnetic cusps joined point to point around a torus. The accelerating system introduces an ion or plasma beam into the polytron through a magnetic junction. A second accelerating system may introduce a second beam of different velocity creating an instability and turbulent mixing of the two beams, which are favorable for a fusion reaction.