This paper mainly studies the motion trajectory of charged particles in the even pole field

and uses MATLAB computing software to visualize. The motion of a charged particle trapped in a dipole includes gyrating motion

"bounce" motion and azimuthal drift motion. Based on the magnetic field parameters of cat-1

the first concept device of magnetic confinement of suspended dipole field in China

the motion equation

Lorentz equation

magnetic vector potential equation and fourth-order Runge-Kutta numerical method are used to calculate the trajectory of particles with points under the magnetic field configuration. This paper discusses the influence of different emission angles

emission positions and emission velocities on particle trajectories

and concludes that the higher the emission angle

the higher the latitude of particle motion

the lower the distance between the equatorial plane and the coil

and the higher the dimension of the emission speed.