Theoretical Study Reversed Field Configuration Magnetized Plasma Physics And Numerical Simulation

Fusion research is not only a focus of the international academic community, also the.major worldwide research project. Inertial Confinement Fusion (ICF) and Magnetic Confinement Fusion (MCF) have been the two most important research directions for many years. In the latter of the last century the Magnetized Inertial Fusion (MIF) that the plasma density and the confinement time are all between the ICF and MCF becomes another important direction of the fusion research, and the differences of the magnetized target configuration in the MIF have evolved four concept, such as Magnetized Target Fusion MTF) based on the Field Reversed Configuration (FRC), Plasma Liner eXperiment (PLX), Magnetic ICF (M-ICF) and Magnetized Liner Inertial Fusion (MgLIF). Although those configurations are small different, the main idea is to generate pre-heated and magnetized plasma target, then inertially compress it to fusion conditions. Preliminary studies on the magnetized plasma of FRC through the theoretical and numerical simulation method have been conducted in this paper. These studies and the related achievements have important academic value in the MHD and the plasma physics, also get a deeper understanding in the process of the MTF and lay the foundation of the future experimental work.On the basis of the FRC theory, the Rigid Rotor (RR) model was deduced to describe the equilibrium state of the magnetized plasma. According to this model, the theoretical distribution of the plasma density, pressure and the current parameters in FRC can be obtained which lay the theoretical basis of the data analysis for the experimental devices. That means one can infer the internal parameters from the measured external magnetic waveform.Conclusion that the more important instability of FRC is the tilt instability is obtained upon the understanding and analysis of various instability modes that may occur in the FRC. The understanding of its mode and growth mechanism has been deepened through the theoretical analysis and mathematical derivation.In this paper, the model and calculation methods of the old2-D MHD code have been improved by introduction of the hall and electron pressure gradient term and the anomalous resistance effect. The improved two-dimensional MHD code (L-YG) can be used to simulate and analyze the formation and transmission phase after the pre-ionization. A series of reasonable physical pictures deepened the understanding of the physical processes of the FRC target. The parameters of "YingGuang-1" device which is under construction were optimized, simulated and analyzed by the L-YG code, and the key issue have been discussed including the theta pinch coil asymmetry, the coil section number, the coil gap width, the magnetic deviation and their effects on the plasma life. The maximum allowable deviations of the magnetic field in the theta pinch coil and cusp coil were given quantitatively as5%and25%respectively. Finally the equivalent magnetic field configuration method was proposed, and the simulation of the plasmoids movement in the magnetic field is more desirable. These results are important to the manufacture of the "YingGuang-1", the diagnosis of the FRC plasma and the future simulation work.