TY - JOUR
T1 - AWECS: A Linear Gyrokinetic δf Particle-in-Cell Simulation Code for the Study of Alfvénic Instabilities in High-β Tokamak Plasmas
AU - A. Bierwage & L. Chen
JO - Communications in Computational Physics
VL - 3
SP - 457
EP - 495
PY - 2008
DA - 2008/09
SN - 4
DO - http://doi.org/
UR - https://global-sci.org/intro/article_detail/cicp/7798.html
KW - 
AB - <p style="text-align: justify;">A1-Dlinear gyrokinetic code called AWECS is developed to study the kinetic excitation of Alfvénic instabilities in a high-β tokamak plasma, with β being the ratio of thermal to magnetic pressure. It is designed to describe physics associated with a broad range of frequencies and wavelengths. For example, AWECS is capable of simulating kinetic ballooning modes, Alfvénic ion-temperature-gradient-driven modes, as well as Alfvén instabilities due to energetic particles. In addition, AWECS may be used to study drift-Alfvén instabilities in the low-β regime. Here, the layout of the code and the numerical methods used are described. AWECS is benchmarked against other codes and a convergence study is carried out.&nbsp;</p>