A nearly one-and-one-half-dimensional confinement model for field-reversed configurations

A global confinement model is developed for a field‐reversed configuration (FRC) using a quasistatic profile assumption and assuming a realistic two‐dimensional equilibrium. Since the associated computational problem is modest, the model is useful as a fast tool for interpreting experimental results and extracting confinement trends. Its predictions compare well with a fully time‐dependent 1 (1)/(2) ‐dimensional computation. The results are compared with results from a similar previous model that employed a crude ‘‘square‐ends’’ equilibrium. Generic confinement relationships between resistivity and its profile, and the confinement of particles and poloidal flux are found.

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