# Item

ITEM ACTIONSEXPORT

Released

Journal Article

#### Numerical computation of magnetic fields of two- and three- dimensional equilibria with net toroidal current

##### MPS-Authors

##### External Ressource

No external resources are shared

##### Fulltext (public)

There are no public fulltexts stored in PuRe

##### Supplementary Material (public)

There is no public supplementary material available

##### Citation

Strumberger, E., Günter, S., Merkel, P., Schwarz, E., Tichmann, C., & Zehrfeld, H.-P. (2002).
Numerical computation of magnetic fields of two- and three- dimensional equilibria with net toroidal current.*
Nuclear Fusion,* *42*(7), 827-832.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-42CE-E

##### Abstract

The MFBE-2001 code computes the magnetic field in a form suitable for field line tracing inside and outside the plasma boundary of two- and three-dimensional finite-beta equilibria. It is a modified version of the Magnetic Field Solver for Finite-beta Equilibria (MFBE) code which was developed for the investigation of stellarator equilibria without net toroidal current. The numerical method used in MFBE-2001 is based on the 'virtual casing' principle which also allows the computation of magnetic fields of equilibria with net toroidal current, such as quasi-axisymmetric and tokamak equilibria. The numerical accuracy of the code is tested for an axisymmetric tokamak- equilibrium and the corresponding three-dimensional one including the toroidal field ripple. For this purpose, the results obtained with the code system VMEC/NEMEC+MFBE_2001+GOURDON are compared with those computed with the axisymmetric equilibrium code DIVA.