FEQIS: A free-boundary equilibrium solver for integrated modeling of tokamak plasmas

Abstract

A new axisymmetric equilibrium solver has been written, called FEQIS (Flexible EQuIlibrium Solver), which purpose is to be used inside integrated modeling of tokamak plasmas. The FEQIS code solves the Grad-Shafranov equation and the "circuit" equations for the external coils and passive conducting structures that are toroidally connected. The code has been specifically equipped with flexibility in choice of circuit connections, and a stripped-down numerical scheme for the solution of the Grad-Shafranov equation through a structure of multi-level simplifications which can be tested against the required accuracy.

References in corpus (5)

• Development of a free boundary Tokamak Equilibrium Solver (TES) for Advanced Study of Tokamak Equilibria
• A fast, high-order solver for the Grad-Shafranov equation
• TokaMaker: An open-source time-dependent Grad-Shafranov tool for the design and modeling of axisymmetric fusion devices
• A mimetic spectral element solver for the Grad-Shafranov equation
• GPEC, a real-time capable Tokamak equilibrium code