A point plasma model for linear plasma devices based on SOLPS-ITER equations: application to helium plasma

Abstract Linear plasma devices represent an essential tool for nuclear fusion research, whereby understanding crucial aspects related to plasma-wall interactions or edge behaviour. Simplified models are of great importance complement and integrate experimental simulation results complex systems such as plasmas in linear machines, because they fast simple employ. In this work, we present a global volume-averaged (0D) model investigation machines. The 0D equations based on the space integration state art implemented SOLPS-ITER code. Comparisons between helium described with 2D simulations performed highlight that contributions often neglected tokamak models, e.g. electron-neutral excitation, may be relevant when describing weakly ionized devices. is used perform sensitivity studies respect several parameters analyse time evolution system, leading identification two scales governing system. Lastly, comparison data from device GyM performed, showing satisfactory agreement. Our methods provide interpretative keys physics plasmas.