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Grant-in-Aid for Science Research (S) FY2009-2013

Integrated Research on Dynamic Response and Transport in Turbulent Plasmas

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To control and to predict the properties of the magnetically confined plasmas, the worldwide researches have been vitally carried out toward realizing a burning plasma in International Tokamak Experimental Reactor (ITER). According to the recent achievement, the new concept is being established that the mesoscale fluctuating structure such as zonal flows and streamers coexist with micro-scale fluctuations, so as to regulate the turbulent transport. The new concept makes it enable to explain the changes in structure and transport occurring in much faster time scale than diffusive one. It is necessary to manage the dynamic changes in transport for control the burning plasma state, thus, the understanding of dynamic transport response should be mandatory. The purposes of this projects are i) to complete the paradigm shift from linear, local, deterministic view to nonlinear, non-local, probabilistic one, ii) to develop and advance the physics of turbulent plasma iii) to understand the mode dynamics and nonlocal transport phenomena, and iv) to clarify the dynamic transport phenomena in the magnetically confined plasmas to provide a concrete base to control the burning plasma in ITER.