Configuration Analysis of H1NF Stellarator Standard Magnetic Field and Motion Orbit Simulation of Energetic Ion

The composition and distribution characteristics of the magnetic field coil of H1NF stellarator were analyzed, its magnetic field configuration characteristics in the standard operation mode were studied, and the typical motion orbit of energetic ion in the standard magnetic field configuration was simulated and calculated. Based on the position of the magnetic axis and the change rule of the magnetic plane along the toroidal direction for the standard magnetic field configuration of H1NF stellarator, taking the magnetic axis as the rotation axis, the poloidal crosssections with different toroidal angles were rotated according to the rotation law to obtain an equivalent calibrated poloidal crosssection in a rotating coordinate system. And the threedimensional motion orbit of energetic ion was projected onto the equivalent calibration poloidal crosssection, so that the motion orbit characteristics of energetic ions in the magnetic field configuration can be more clearly displayed. The results show that the orbits of the passing particle and trapped particle in H1NF stellarator are similar to those in the general Tokamak. But the orbit of the passing particle in H1NF stellarator is closed after a few turns on the equivalent calibrated poloidal crosssection, the banana orbit of the captured particle in the H1NF stellarator is not closed, and its orbit gradually drifts to the outside of the magnetic plane, which may eventually lead to particle loss.