| Citation: |
Ting WU, Lin NIE, Yi YU, Jinming GAO, Junyan LI, Huicong MA, Jie WEN, Rui KE, Na WU, Zhihui HUANG, Liang LIU, Dianlin ZHENG, Kaiyang YI, Xiaoyan GAO, Weice WANG, Jun CHENG, Longwen YAN, Laizhong CAI, Zhanhui WANG, Min XU. Evolution of edge turbulent transport induced by L-mode detachment in the HL-2A tokamak[J]. Plasma Science and Technology, 2023, 25(1): 015102. DOI: 10.1088/2058-6272/ac82df
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This paper presents the characteristics of L-mode detachment, together with the behavior of edge turbulent transport and plasma confinement on the HL-2A tokamak. Partially detached and pronounced detached states have been achieved in L-mode plasma. Stored energy was maintained before and after detachment. Edge turbulence and its transport have increased obviously in the partially detached state. In the pronounced detached state, redistribution of the density and temperature profiles due to detachment leads to low amplitude of electron temperature and pressure, as well as very weak edge turbulence and transport. Despite strong plasma radiation in the pronounced detached state, reduced edge turbulent transport contributes to maintaining stored energy in detached L-mode plasma in HL-2A. Different detachment states play an important role in the redistribution of density and temperature profiles, which requires further study.
This work is supported by National Key Research and Development Program of China (Nos. 2018YFE0303102, 2018YFE0309103, 2017YFE0300405 and 2017YFE0301203), National Natural Science Foundation of China (Nos. U1867222, 11875124, 11905051, 11805055 and 11875020) and the Sichuan Youth Science and Technology Innovation Team Project (No. 2020JDTD0030).
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