Nuclear Fusion (Jan 2024)
Counteracting sawtooth crash effects via fluctuation-induced inward transport in HL-2A NBI plasma
- Jie Wu,
- Tao Lan,
- Weixing Ding,
- Jiaren Wu,
- Min Xu,
- Lin Nie,
- Wei Chen,
- Min Jiang,
- Zhihui Huang,
- Kaiyang Yi,
- Na Wu,
- Weice Wang,
- Qian Zou,
- Ting Long,
- Boda Yuan,
- Liming Yu,
- Yi Yu,
- Rui Ke,
- Hangqi Xu,
- Pengcheng Lu,
- Tianxiong Wang,
- Qilong Dong,
- Yongkang Zhou,
- Hu Cai,
- Peng Deng,
- Xingkang Wang,
- Zeqi Bai,
- Yuhua Huang,
- Chen Chen,
- Wenzhe Mao,
- Chu Zhou,
- Ahdi Liu,
- Zhengwei Wu,
- Jinlin Xie,
- Wulv Zhong,
- Xuru Duan,
- Wandong Liu,
- Ge Zhuang
Affiliations
- Jie Wu
- ORCiD
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Tao Lan
- ORCiD
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Weixing Ding
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Jiaren Wu
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Min Xu
- ORCiD
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Lin Nie
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Wei Chen
- ORCiD
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Min Jiang
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Zhihui Huang
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Kaiyang Yi
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Na Wu
- ORCiD
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Weice Wang
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Qian Zou
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Ting Long
- ORCiD
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Boda Yuan
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Liming Yu
- ORCiD
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Yi Yu
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University , Zhuhai 519082, China
- Rui Ke
- ORCiD
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Hangqi Xu
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Pengcheng Lu
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Tianxiong Wang
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Qilong Dong
- ORCiD
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Yongkang Zhou
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Hu Cai
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Peng Deng
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Xingkang Wang
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Zeqi Bai
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Yuhua Huang
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Chen Chen
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Wenzhe Mao
- ORCiD
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Chu Zhou
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Ahdi Liu
- ORCiD
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Zhengwei Wu
- ORCiD
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Jinlin Xie
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Wulv Zhong
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Xuru Duan
- Southwestern Institute of Physics , PO Box 432, Chengdu 610041, China
- Wandong Liu
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- Ge Zhuang
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
- DOI
- https://doi.org/10.1088/1741-4326/ad67f2
- Journal volume & issue
-
Vol. 64,
no. 9
p. 096031
Abstract
The Langmuir probe observed an increase in density and floating potential fluctuations after the sawtooth crash at the edge of HL-2A neutral beam injection heated plasma. This process initiates fluctuating-induced radial inward particle transport once the plasma enters a period with strong sawtooth crash. The inward transport comprises broad-band fluctuations with varying scales, which occur uniquely in the immediate aftermath of the sawtooth crash-driven outflow, signifying a transient phenomenon confined to that specific interval. These results demonstrate that the sawtooth crash can significantly impact edge turbulence by modifying electrostatic fluctuations. This modification changes the direction of electric fluctuation-induced particle transport, thereby reducing the influence of the intense sawtooth crash-driven outflow. Furthermore, the observations support the existence of a damping mechanism for the outflow during the formation of inward flux after the sawtooth crash, which may be associated with the recovery process of sawtooth cycle.
Keywords
