vmec_jax.fieldlines

Field-line tracing utilities.

This module provides a minimal field-line tracer on a single flux surface.

The tracer is intended for visualization (ParaView) and regression diagnostics, not for production orbit following.

Functions

trace_fieldline_on_surface(*, R, Z, bsupu, ...)

Trace a field line on a single flux surface using RK4 in physical phi.

Classes

FieldLine(phi, theta, x, y, z, Bmag)

A traced field line on a flux surface.