| Observation and Simulation of n=1 Reversed Shear Alfvén Eigenmode on the HL-2A Tokamak |
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| 作者姓名： | P.W.Shi Y.R.Yang W.Chen Z.B.Shi Z.C.Yang L.M.Yu T.B.Wang X.X.He X.Q.Ji W.L.Zhong M.Xu X.R.Duan |
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| 作者单位： | 1. Southwestern Institute of Physics;2. State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology |
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| 基金项目： | supported by the National Key R&D Program of China (Grant No.2019YFE03020000)；;the National Natural Science Foundation of China (Grant No.12125502)；;the Sichuan Science and Technology Program (Grants No.2020JDJQ0070)；;the Natural Science Foundation of Sichuan (Grant No.2022NSFSC1823)； |
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| 摘 要： | A branch of high-frequency Alfvénic modes is observed on the HL-2 A tokamak. The electromagnetic mode can be driven unstably in the plasma with an off-axis neutral beam heating. Its mode frequency keeps almost unchanged or presents a slow-sweeping behavior, depending on the detail current evolution. The poloidal and toroidal mode numbers are m/n = 1/1. The mode has a quite short duration(≤20 ms) and usually appears 5–10 ms after the neutral beam being injected into the plasma. Hybrid simulations...
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