cherab.imas.ids.common.grid_radial.get_psi_norm¶

cherab.imas.ids.common.grid_radial.get_psi_norm(psi: NDArray[float64] | None, psi_axis: float, psi_lcfs: float, rho_tor_norm: NDArray[float64] | None, psi_interpolator: Callable[[float], float] | None) → NDArray[float64]Source¶

Calculate normalized poloidal flux.

Parameters:

psi: NDArray[float64] | None¶

Poloidal flux values from the core grid.

psi_axis: float¶

Poloidal flux at the magnetic axis.

psi_lcfs: float¶

Poloidal flux at the last closed flux surface.

rho_tor_norm: NDArray[float64] | None¶

Normalized toroidal flux values.

psi_interpolator: Callable[[float], float] | None¶

Interpolator function to map rho_tor_norm to psi_norm. Used only if psi is None.

Returns:

NDArray[np.float64] – Normalized poloidal flux values.

Raises:

RuntimeError – If both psi and rho_tor_norm are None, or if psi_interpolator is None when psi is None.