Plasmaboundaries Model

plasmaboundaries.model.compute_N_i(params)

Computes N_1, N_2 and N_3 coefficients based on plasma parameters

Parameters:params (dict) – contains the plasma parameters (aspect_ratio, elongation, triangularity, A)
Returns:(N_1, N_2, N_3)
Return type:(float, float, float)
plasmaboundaries.model.compute_psi(params, config='non-null', return_coeffs=False)

Computes the magnetic flux fonction

Parameters:
  • params (dict) – contains the plasma parameters (aspect_ratio, elongation, triangularity, A)
  • config (str, optional) – shape of the plasma “non-null”, “single-null”, “double-null”. Defaults to “non-null”.
  • return_coeffs (bool, optional) – If True, will also return the coefficients c_i. Defaults to False.
Returns:

Magnetic flux fonction and

coefficients c_i (only if return_coeffs is True)
Return type:

(callable) or (callable, list)
plasmaboundaries.model.constraints(p, params, config)

Creates set of constraints for parametric GS solution for any plasma configuration.

Parameters:
  • p (list) – c_i coefficients (floats)
  • params (dict) – contains the plasma parameters (aspect_ratio, elongation, triangularity, A)
  • config (str) – shape of the plasma ‘non-null’, ‘single-null’, ‘double-null’.
Returns:

set of constraints
Return type:

list
plasmaboundaries.model.get_separatrix_coordinates(params, config, step=0.01)

Creates a list of points describing the separatrix

Parameters:
  • params (dict) – contains the plasma parameters (aspect_ratio, elongation, triangularity, A)
  • config (str) – shape of the plasma “non-null”, “single-null”, “double-null”.
  • step (float, optional) – Resolution of the domain. Defaults to 0.01.
Raises:

ValueError – If no separatrix is found within the points of interest
Returns:

list of points coordinates
Return type:

numpy.array
plasmaboundaries.model.test_points(aspect_ratio, elongation, triangularity)

Compute the coordinates of inner and outer equatorial points and high point based on plasma geometrical parameters.

Parameters:
  • aspect_ratio (float) – minor radius / major radius
  • elongation (float) – plasma elongation
  • triangularity (float) – plasma triangularity
Returns:

points (x, y)

coordinates
Return type:

((float, float), (float, float), (float, float))
plasmaboundaries.model.val_from_sp(expression)

Transforms a sympy expression to a callable function f(x, y)

Parameters:expression (sympy.Add) – sympy expression to be converted which has symbols ‘x’ and ‘y’ in it.