FLARE: field line analysis and reconstruction for 3D plasma boundary modeling

Abstract

The FLARE code is a magnetic mesh generator that is integrated within a suite of tools for the analysis of the magnetic geometry in toroidal fusion devices. A magnetic mesh is constructed from field line segments and permits fast reconstruction of field lines in 3D plasma boundary codes such as EMC3-EIRENE. Both intrinsically non-axisymmetric configurations (stellarators) and those with symmetry breaking perturbations of an axisymmetric equilibrium (tokamaks) are supported. The code itself is written in Modern Fortran with MPI support for parallel computing, and it incorporates object-oriented programming for the definition of the magnetic field and the material surface geometry. Extended derived types for a number of different magnetohydrodynamic (MHD) equilibrium and plasma response models are implemented. The core element of FLARE is a field line tracer with adaptive step-size control, and this is integrated into tools for the construction of Poincaré maps and invariant manifolds of X-points. A collection of high-level procedures that generate output files for visualization is build on top of that. The analysis modules are build with Python frontends that facilitate customization of tasks and/or scripting of parameter scans.

arXiv comment20 pages, 18 figures

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Cited by in corpus (4)

• Heuristic predictions of RMP configurations for ELM suppression in ITER burning plasmas and their impact on divertor performance
• Resilient Stellarator Divertor Characteristics in the Helically Symmetric eXperiment
• Magnetic mesh generation and field line reconstruction for scrape-off layer and divertor modeling in stellarators
• Comparison of plasma response models for RMP effects on the divertor and scrape-off layer in KSTAR