The effect of resonant magnetic perturbation(RMP) on boundary turbulence and transport in J-TEXT plasma is experimentally investigated.Edge plasma fluctuations in discharges with and without the(m/n=3/1) RMP currents ...The effect of resonant magnetic perturbation(RMP) on boundary turbulence and transport in J-TEXT plasma is experimentally investigated.Edge plasma fluctuations in discharges with and without the(m/n=3/1) RMP currents are diagnosed by using Langmuir probe arrays.It was found that fluctuations in the edge and scrape-off layer(SOL) regions decrease with the application of a 6 kA RMP.The broadband turbulence at the radial location of ρ~0.9 which has a characteristic frequency of 40-150 kHz was strongly suppressed when applying RMP,as was the radial turbulent particle flux and blob transport in the near-SOL region.These experimental findings make RMP a promising method of suppressing and controlling turbulence and particle transport in a plasma boundary.展开更多
基金This work is supported by the National Key Research & Development Programme of China(No.2018YFE0309100,2017YFE0301201)National Natural Science Foundation of China(Nos.11875124,U1867222,11575055,11705052&11705151)the National Magnetic Confinement Fusion Science Programme of China(Nos.2015GB120002,2015GB11101&2015GB104000).
文摘The effect of resonant magnetic perturbation(RMP) on boundary turbulence and transport in J-TEXT plasma is experimentally investigated.Edge plasma fluctuations in discharges with and without the(m/n=3/1) RMP currents are diagnosed by using Langmuir probe arrays.It was found that fluctuations in the edge and scrape-off layer(SOL) regions decrease with the application of a 6 kA RMP.The broadband turbulence at the radial location of ρ~0.9 which has a characteristic frequency of 40-150 kHz was strongly suppressed when applying RMP,as was the radial turbulent particle flux and blob transport in the near-SOL region.These experimental findings make RMP a promising method of suppressing and controlling turbulence and particle transport in a plasma boundary.
基金This work is supported by the National Magnetic Confinement Fusion Science Program of China (Nos. 2014GB118000, 2014GB106001, 2015GB111001, 2015GB111002 and 2015GB 120003) and National Natural Science Foundation of China (Nos. 11505069, 11275079 and 11405068).
基金supported in part by the Basic Science Research Program through the National Research Foundation of Korea Research Grant 2016R1D1A1B03930408 a TJ Park Science Fellowship of the POSCO TJ Park Foundation supported by the National Research Foundation of Korea(NRF) grant funded by the Korean government(MSIP)(2016R1A2B2016112)