[en] MAGIC, a new one-dimensional particle code, simulates magneto-inductive phenomena in a cylindrically-symmetric magnetized plasma. We describe the physical model and the computational algorithm used for the code. A user's guide to and a listing of MAGIC are also included

[en] Results are presented of comparative timing tests made by running a typical FORTRAN physics simulation code on the following machines: DEC PDP-10 with KI processor; DEC PDP-10, KI processor, and FPS AP-190L; CDC 7600; and CRAY-1. Factors such as DMA overhead, code size for the AP-190L, and the relative utilization of floating point functional units for the different machines are discussed. 1 table

[en] We present the design and implementation for the array processor of FERMI, a code for modeling the physics of field-reversed magnetic-mirror fusion machines. The physical model is described briefly, along with a discussion of important physical effects that this code can model. We show that the code results are in agreement with theoretical predictions

[en] MAGIC, a new one-dimensional particle code, simulates magneto-inductive phenomena in a cylindrically symmetric magnetized plasma. The physical model and the computational algorithm used for the code are described. A user's guide to and a listing of MAGIC are also included

[en] A one-dimensional, cylindrically symmetric hybrid simulation code has been developed to investigate field reversal in a mirror plasma. The fluid momentum equation is used to determine the electron current density with n/sub e/m/sub e/dv vector/sub e//dt = O and n/sub e/ approx. = n/sub i/. Large-orbit ions are followed by integrating particle equations of motion. Momentum-conserving electron-ion drag is included

[en] Array processing techniques are allowing physicists to program in FORTRAN and generate fast machine code. The simulations show close agreement with theoretically predicted results. Nuclear energy research at Lawrence Livermore National Laboratory indicates that field-reversed magnetic mirror machines may offer greater efficiency and higher electrical yields than current reactor designs. Since theoretical analysis of the FRM is difficult, they are modelling the ion kinetics and electron physics of a fusion plasma to analyze the buildup and decay processes that might be characteristic of an actual machine. They have developed a simulation that accurately models the developing current distribution and use an array processor to obtain faster run times. 13 references

[en] Nuclear energy research at Lawrence Livermore National Laboratory indicates that field-reversed magnetic mirror machines may offer greater efficiency and higher electrical yields than current reactor designs. Since theoretical analysis of the FRM is difficult, the ion kinetics and electron physics of a fusion plasma are modeled to analyze the buildup and decay processes that might be characteristic of an actual machine. A simulation has been developed that accurately models the developing current distribution. An array processor is used to obtain faster run times

[en] Solutions are given for the characteristics of a warm plasma flowing axially through a magnetic mirror in the presence of a confined hot-ion species. The warm plasma is assumed to have negligible effect on the magnetic field. The plasma is described by four moment equations for the density, velocity, parallel temperature, and perpendicular temperature of the ions, that are solved by a time-dependent finite-difference computer code. Two basic types of solutions occur corresponding to the warm-ion density (n/sub w/) being less than the hot-ion density (n/sub h/), and n/sub w/>n/sub h/. In the first case, the flow is nearly stagnant between the warm-ion source and the midplane, but the flow rapidly accelerates to a supersonic velocity just beyond the midplane. In the second case, the flow velocity profile is more symmetric about the midplane, and the sonic transition occurs at the mirror throat. Specific calculations are given for gas box and stream gun sources used to stabilize microstabilities and for a collisional tandem mirror

[en] A new method for efficient computer simulation of long time-scale physics phenomena is proposed which has proved successful in one- and two-dimensional magneto-inductive particle codes. The method relies on orbit-averaging charge and current densities in Maxwell's equations before solving for the self-consistent electric and magnetic fields in order to filter out unwanted high-frequency oscillations and reduce the number of simulation particles necessary to fill phase space adequately. This method offers the potential of greatly improving the economics of simulating the evolution of a plasma over time intervals which are long compared to particle orbit periods. A particular scheme using a predictor-corrector iterative method and time splitting is discussed, which is both stable and accurate. Application to the efficient simulation of a magnetic mirror machine plasma injected with energetic neutral beams is presented