Since i) we can't use any non-public datasets ii) interpolating 3D data is expensive, there is a need for an analytical, yet realistic, representation of a stellarator field. This field would be used to test the stellarator machinery and to write a tutorial on how to work with stellarators when using ASCOT.
Any ideas for an analytical representation are welcome! Here's one possibility, but I didn't catch how exactly we can find psi and the components of B in cylindrical coordinates (which is what ASCOT uses):
Since i) we can't use any non-public datasets ii) interpolating 3D data is expensive, there is a need for an analytical, yet realistic, representation of a stellarator field. This field would be used to test the stellarator machinery and to write a tutorial on how to work with stellarators when using ASCOT.
Any ideas for an analytical representation are welcome! Here's one possibility, but I didn't catch how exactly we can find psi and the components of B in cylindrical coordinates (which is what ASCOT uses):
Near-Axis Expansion of Stellarator Equilibrium at Arbitrary Order in the Distance to the Axis
As for the test case, the obvious one would be to test the neoclassical transport:
Theory of plasma confinement in non-axisymmetric magnetic fields