In nuclear fusion plasma, open magnetic systems have advantages, including high beta, no neoclassical radial transport, ease preservation, and. No trend with density is observed in the small density range covered. Plasma Physics and Controlled Fusion. No substantial improvement in the ring parameters was observed in. Contributions to Plasma Physics ISSN: Volume. The formation and quasi-equilibrium of a high-beta heliac plasma are investigated in the High-Beta Q Machine (Phys. Chapter 8: Plasma operation and control, ITER Physics Basis. Physics. beta (no sample averaging over the expansion point was computed). The Chinese tokamak now demonstrates. beta