Diffusive Transport Analysis in Low Aspect Ratio Reversed Field Pinch

15th International Congress on Plasma Physics; 13th Latin American Workshop on Plasma Physics

Nagamine, Yasuo^1 ; Fukuyama, Atsushi^2 ; Shiina, Shoichi^3 ; Aizawa, Masamitsu^1

Institute of Quantum Science, Nihon University, Chiyoda-ku Tokyo, Japan^1

Department of Nuclear Engineering, Kyoto University, Sakyo-ku Kyoto, Japan^2

National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan^3

关键词: Anomalous transport;    Bootstrap current fraction;    Confinement properties;    Diffusive transport;    Neoclassical transport model;    Non-circular cross-section;    Reversed field pinch;    Transport phenomena;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/511/1/012046/pdf
DOI  :  10.1088/1742-6596/511/1/012046

来源: IOP

【 摘 要 】

For the evaluation of confinement property of a low aspect ratio reversed field pinch (RFP) plasma, diffusive transport analysis is studied. Numerical analysis based on the neoclassical transport model in a low aspect ratio RFP show that a considerable bootstrap current contibution can be expected in this configuration, when incorporating the effects of non-circular cross-section and low aspect ratio. So-called neclassical RFP equilibrium are also found to attain both high stablity beta limit and high bootstrap current fraction. However, of transport phenomena in an RFP, the energy confinement time τemight be determined by anomalous transport due to micro-instabilities. To analyze such transport phenomena in a low aspect ratio RFP, the applicability of the TASK (Transport Analysing System for TokamaK) simulation code are considered.