desc.objectives.QuasisymmetryTwoTerm.compute

QuasisymmetryTwoTerm.compute(*args, **kwargs)[source]

Compute quasi-symmetry two-term errors.

Parameters:

  • R_lmn (ndarray) – Spectral coefficients of R(rho,theta,zeta) – flux surface R coordinate (m).

  • Z_lmn (ndarray) – Spectral coefficients of Z(rho,theta,zeta) – flux surface Z coordinate (m).

  • L_lmn (ndarray) – Spectral coefficients of lambda(rho,theta,zeta) – poloidal stream function.

  • i_l (ndarray) – Spectral coefficients of iota(rho) – rotational transform profile.

  • c_l (ndarray) – Spectral coefficients of I(rho) – toroidal current profile.

  • Psi (float) – Total toroidal magnetic flux within the last closed flux surface (Wb).

Returns:

f (ndarray) – Quasi-symmetry flux function error at each node (T^3).