Nuclear Fusion (Jan 2024)
Simultaneous reduction of tungsten and rotation in the core region induced by RMP
- H. Sheng,
- Y.W. Sun,
- C.X. Zhou,
- Y.M. Duan,
- W.M. Zhang,
- Y.Y. Li,
- L. Zhang,
- J.L. Chen,
- S.F. Mao,
- Y.Q. Liu,
- Q. Ma,
- T.H. Shi,
- C. Ye,
- P.C. Xie,
- X.M. Wu,
- M.N. Jia,
- N. Chu,
- H.H. Wang,
- Q. Zang,
- S. Gu,
- M.Y. Ye,
- the EAST Team
Affiliations
- H. Sheng
- ORCiD
- School of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- Y.W. Sun
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- C.X. Zhou
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- Y.M. Duan
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- W.M. Zhang
- ORCiD
- School of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- Y.Y. Li
- Enn Science and Technology Development Co., Ltd, Langfang , China
- L. Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- J.L. Chen
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- S.F. Mao
- ORCiD
- School of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, China
- Y.Q. Liu
- ORCiD
- General Atomics , PO Box 85608, San Diego, CA 92186-5608, United States of America
- Q. Ma
- ORCiD
- School of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- T.H. Shi
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- C. Ye
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- P.C. Xie
- ORCiD
- School of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- X.M. Wu
- School of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- M.N. Jia
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- N. Chu
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- H.H. Wang
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- Q. Zang
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- S. Gu
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , PO Box 1126, Hefei 230031, China
- M.Y. Ye
- ORCiD
- School of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, China
- the EAST Team
- DOI
- https://doi.org/10.1088/1741-4326/ad8f44
- Journal volume & issue
-
Vol. 65,
no. 1
p. 016009
Abstract
Tungsten (W) impurity control is critical for plasma performance and a priority for ITER. The simultaneous reduction of W and rotation in the core region induced by resonant magnetic perturbations (RMPs) has been found and understood in EAST. A positive feedback loop between the W and rotation is first proposed, resulting in core W accumulation and high rotation even in low-torque plasma before the RMP application. This cycle can be reversed by the edge rotation braking induced by RMP, causing a significant simultaneous reduction of W concentration and rotation. These new mechanisms are based on several repeatable experiments and confirmed by the modeling results from TGYRO and NTVTOK. It provides a new understanding of the RMP effects on W and rotation and can be used for W and rotation control in future reactors.
Keywords
