Dynamic control of plasma transition phenomena in flux-driven gyrokinetic turbulence simulation based on multi-moment scheme

2015 Fiscal Year Final Research Report

• Project/Area Number: 25800304
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plasma science
• Research Institution: Kyoto University
• Principal Investigator: Imadera Kenji 京都大学, エネルギー科学研究科, 助教 (90607839)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: プラズマ・核融合 / ジャイロ運動論 / 乱流輸送 / 内部輸送障壁 / 運動量輸送

Outline of Final Research Achievements

The formation of Internal Transport barrier (ITB) has a crucial key to achieve high-performance magnetically confined fusion plasmas, however, such a phenomena had not been reproduced by turbulent transport simulations based on the first principle. In this work, we have newly developed global toroidal gyrokinetic code GKNET (GyroKinetic Numerical Experimental Tokamak) and performed nonlinear flux-driven turbulence simulation with an external momentum source. As a result, we found that the radial mean electric field can be modulated by external momentum source, leading to ITB formation in which the ion thermal diffusivity decreases to the neoclassical transport level.

Free Research Field

数物系科学