Core-SOL simulations of L-mode tokamak plasma discharges using BALDUR code

• Main Authors: Yutthapong Pinanroj, Thawattchai Onjun
• Format: Article
• Language: English
• Published: Prince of Songkla University 2014-04-01
• Series: Songklanakarin Journal of Science and Technology (SJST)
• Subjects: tokamak; fusion; L-mode; SOL; and tokamak plasma
• Online Access: http://rdo.psu.ac.th/sjstweb/journal/36-2/36-2-11.pdf

Core-SOL simulations were carried out of plasma in tokamak reactors operating in a low confinement mode (L-mode), for various conditions that match available experimental data. The simulation results were quantitatively compared against experimental data, showing that the average RMS errors for electron temperature, ion temperature, and electron density were lower than 16% or less for 14 L-mode discharges from two tokamaks named DIII-D and TFTR. In the simulations, the core plasma transport was described using a combination of neoclassical transport calculated by NCLASS module and anomalous transport by Multi-Mode-Model version 2001 (MMM2001). The scrape-off-layer (SOL) is the small amount of residual plasma that interacts with the tokamak vessel, and was simulated by integrating the fluid equations, including sources, along open field lines. The SOL solution provided the boundary conditions of core plasma region on low confinement mode (L-mode). The experimental data were for 14 L-mode discharges and from two tokamaks, named DIII-D and TFTR.