Numerical simulation of detached plasma in the end-cell of GAMMA 10/PDX for divertor simulation study

• Published in: Fusion engineering and design Vol. 125; pp. 216 - 221
• Main Authors: Islam, M.S., Nakashima, Y., Hatayama, A., Ichimura, K., Islam, M.M., Fukui, K., Ohuchi, M., Yokodo, T., Lee, G., Togo, S., Ezumi, N., Sakamoto, M., Imai, T.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-12-2017; Elsevier Science Ltd
• Subjects: Argon; Charge exchange; Computer simulation; D-module; Electron density; Electrons; Fusion; GAMMA 10/PDX; Multi-fluid code; Neon; Plasma; Plasma detachment; Power loss; Reduction; Multi-fluid code; GAMMA 10/PDX; Plasma detachment; D-module
• ISSN: 0920-3796; 1873-7196
• DOI: 10.1016/j.fusengdes.2017.05.132

•This research investigates the effect of Argon (Ar) and Neon (Ne) injection on the plasma parameters in the end-cell of GAMMA 10/PDX numerically by using a multi-fluid code.•Temperature reduction in the electrons and ions during Ar injection is higher than those of the Ne injection.•Particularly in the electron temperature a remarkable reduction is observed during Ar injection.•The electron density shows a tendency of roll-over phenomenon for Ar injection.•It is also observed that the radiative power loss due to the Ar injection is much higher than that of the Ne injection.
This research investigates the effect of Argon (Ar) and Neon (Ne) injection on the plasma parameters in the end-cell of GAMMA 10/PDX numerically by using a multi-fluid code. Reduction in the temperature of the electrons and ions is observed according to the increment of impurity injection. The electron density and the particle flux show tendency of roll-over phenomena for Ar injection. Temperature reduction in the electrons and ions during Ar injection is higher than those of the Ne injection. It is also observed that the charge-exchange (CX) loss and radiative power loss for Ar injection is higher than that of the Ne injection. These outcomes indicate that Ar is more effective radiative gas for generating detached plasma.