摘要
Effect of edge turbulent transport on scrape-off layer(SOL)width has been investigated in Ohmically heated L-mode plasma under limiter configurations on HL-2A tokamak.It has been found that SOL width is doubled when plasma current decreases about 20%.With larger plasma current,E×B shear is stronger and has greater suppression effect on edge turbulent transport.SOL width is larger when power of relative density fluctuation level in the edge region is larger.It is concluded that edge turbulent transport plays a significant role on SOL width.These experimental findings may provide a better understanding and controlling of power exhaust for present and future fusion devices.
作者
吴婷
许敏
聂林
余羿
许健强
龙婷
何钰
程钧
严龙文
黄治辉
柯锐
石鹏
王硕
刘兵
Ting WU;Min XU;Lin NIE;Yi YU;Jianqiang XU;Ting LONG;Yu HE;Jun CHENG;Longwen YAN;Zhihui HUANG;Rui KE;Peng SHI;Shuo WANG;Bing LIU(Southwestern Institute of Physics,Chengdu 610041,People's Republic of China;School of Physics,University of Science and Technology of China,Hefei 230026,People's Republic of China;Institute of Fusion Science,School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,People's Republic of China)
基金
by National Natural Science Foundation of China(Nos.11875124,U1867222,11575055,11705052,11875020 and 11705151)
National Key Research and Development Program of China(Nos.2018YFE0309103,2018YFE0303102,2017YFE0300405 and 2017YFE0301203).
