MHD equilibrium

The ideal Magneto-HydroDynamic (MHD) equilibrium of a near-Maxwellian magnetically confined plasma is obtained by solving the force balance equation

${\vec {\nabla }}p={\vec {j}}\times {\vec {B}}$

A large number of codes is available to evaluate the MHD equilibria.

2-D codes

• EFIT
• FBT
• HBT

3-D codes

• VMEC (nested flux surfaces)
• IPEC (nested flux surfaces)
• HINT/HINT2
• PIES
• Siesta (islands, fixed boundary)