Effect of edge turbulent transport on scrape-off layer width on HL-2A tokamak

• 作者: 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
• 来源期刊: 等离子体科学和技术（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: MAGNETICALLY CONFINED PLASMA
• 页码范围: 1-6
• 页数: 6页
• 语种: 英文

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 x 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.