Contacts: Dmitri Orlov, Michael Hanson

Short Description

Fourier analysis of non-axisymmetric magnetic fields and island width calculations with SURFMN code


3D, vacuum, RMP, magnetics, islands

Long Description

This module allows runs the SURFMN code for Fourier analysis of non-axisymmetric magnetic fields and island width calculations. SURFMN employs realistic coil models and realistic axisymmetric plasma equilibria. It does not calculate a self-consistent, nonaxisymmetric plasma equilibrium in pressure balance. Instead, the coil fields are curl-free, and the equilibrium field remains unchanged and axisymmetric. SURFMN complements magnetic line tracing and Poincare plots and has been verified against them.

Typical workflows

Execution GUI allows: * Fetching of experimental coil setup (DIII-D only) * Setup of active coils * Setting up of toroidal and poloidal harmonics to be analyzed

Postprocessing GUI allows: * Plot coils geometry (IDL) * Plot spectrum (IDL) * Plot island (IDL) * Plot last closed flux surface perturbation (IDL) * Plot of Chirikov profile (IDL)

Supported devices



List of contributors sorted by number of lines authored:

811 Michael Hanson
363 Nikolas Logan
256 Dmitri Orlov
136 SM Yang
107 Fusion Bot
 47 Orso Meneghini
  3 Sterling Smith
  1 Stuart Henderson
  1 James Buchanan


List of usernames sorted by number of module imports: orlov, evans, margomw, Trevisan, huqiming, smithsp, duxiaodi, duttas, knolkerm, logannc, munarettos, root, sapna, thomek, willensdorferm