An Improved Gyrokinetic Model Structure-Preserving Algorithm for Magnetic Confinement Plasmas

The study of fusion plasma and the design of tokamaks heavily rely on particle tracing analysis and selfconsistent particle-in-cell methons. Therefore, the structure-preserving algorithms have emerged as an intriguing research topic. These algorithms can prevent the accumulation of errors, such as energy loss, which is often unavoidable in general numerical methods like RK4. In recent years, the Classical Pauli Particle (CPP) proposed by Xiao and Qin
^[1]
has been introduced as an alternative to gyro-kinetics for computing dynamic particle orbits. The theoretical framework of this slow manifold
^[2]
allows for efficiently applying of structure-preserving algorithms.