Nonlinear dynamics of energetic-particle driven geodesic acoustic modes in ASDEX Upgrade

被引:14
|
作者
Novikau, I. [1 ]
Biancalani, A. [1 ]
Bottino, A. [1 ]
Lauber, Ph. [1 ]
Poli, E. [1 ]
Manz, P. [1 ]
Conway, G. D. [1 ]
Di Siena, A. [1 ]
Ohana, N. [2 ]
Lanti, E. [2 ]
Villard, L. [2 ]
机构
[1] Max Planck Inst Plasma Phys, D-85748 Garching, Germany
[2] Ecole Polytech Fed Lausanne, Swiss Plasma Ctr, CH-1015 Lausanne, Switzerland
关键词
EXPLANATION; SIMULATION; CODE;
D O I
10.1063/1.5142802
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Turbulence in tokamaks generates radially sheared zonal flows. Their oscillatory counterparts, geodesic acoustic modes (GAMs), appear due to the action of the magnetic field curvature. The GAMs can be driven unstable by an anisotropic energetic particle (EP) population leading to the formation of global radial structures, called energetic-particle-driven geodesic acoustic modes (EGAMs). The EGAMs can redistribute EP energy to the bulk plasma through collisionless wave-particle interaction. In such a way, the EGAMs might contribute to the plasma heating. Thus, investigation of EGAM properties, especially in the velocity space, is necessary for precise understanding of the transport phenomena in tokamak plasmas. In this work, the nonlinear dynamics of EGAMs without considering the mode interaction with the turbulence is investigated with the help of a Mode-Particle-Resonance (MPR) diagnostic implemented in the global gyrokinetic particle-in-cell code ORB5. An ASDEX Upgrade discharge is chosen as a reference case for this investigation due to its rich EP nonlinear dynamics. An experimentally relevant magnetic field configuration, thermal species profiles, and an EP density profile are taken for EGAM chirping modeling and its comparison with available empirical data. The same magnetic configuration is used to explore energy transfer by the mode from the energetic particles to the thermal plasma including kinetic electron effects. For a given EGAM level, the plasma heating by the mode can be significantly enhanced by varying the EP parameters. Electron dynamics decreases the EGAM saturation amplitude and consequently reduces the plasma heating, even though the mode transfers its energy to thermal ions much more than to electrons.
引用
收藏
页数:13
相关论文
共 50 条
  • [1] Nonlinear excitation of energetic particle driven geodesic acoustic mode by resonance overlap with Alfven instability in ASDEX Upgrade
    Wang, Hao
    Lauber, Philipp
    Todo, Yasushi
    Suzuki, Yasuhiro
    Li, Hanzheng
    Idouakass, Malik
    Wang, Jialei
    Adulsiriswad, Panith
    SCIENTIFIC REPORTS, 2025, 15 (01):
  • [2] A branch of energetic-particle driven geodesic acoustic modes due to magnetic drift resonance
    Sasaki, M.
    Kasuya, N.
    Itoh, K.
    Hallatschek, K.
    Lesur, M.
    Kosuga, Y.
    Itoh, S. -I.
    PHYSICS OF PLASMAS, 2016, 23 (10)
  • [3] Nonlinear excitation of energetic particle driven geodesic acoustic mode by Alfvén instability in ASDEX-Upgrade Tokamak
    Wang, Hao
    Lauber, Philipp W.
    Todo, Yasushi
    Suzuki, Yasuhiro
    Li, Hanzheng
    Wang, Jialei
    Wei, Shizhao
    NUCLEAR FUSION, 2024, 64 (07)
  • [4] Evaluation of Measurement Signal of Heavy Ion Beam Probe of Energetic-Particle Driven Geodesic Acoustic Modes
    Sasaki, Makoto
    Itoh, Kimitaka
    Ido, Takeshi
    Shimizu, Akihiro
    Kobayashi, Tatsuya
    Arakawa, Hiroyuki
    Kasuya, Naohiro
    Fujisawa, Akihide
    Itoh, Sanae-I
    PLASMA AND FUSION RESEARCH, 2018, 13
  • [5] Frequency scaling and localization of geodesic acoustic modes in ASDEX Upgrade
    Conway, G. D.
    Troester, C.
    Scott, B.
    Hallatschek, K.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2008, 50 (05)
  • [6] Amplitude behaviour of geodesic acoustic modes in the ASDEX Upgrade tokamak
    Conway, G. D.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2008, 50 (08)
  • [7] Particle transport due to energetic-particle-driven geodesic acoustic modes
    Zarzoso, D.
    del-Castillo-Negrete, D.
    Escande, D. F.
    Sarazin, Y.
    Garbet, X.
    Grandgirard, V.
    Passeron, C.
    Latu, G.
    Benkadda, S.
    NUCLEAR FUSION, 2018, 58 (10)
  • [8] Impact of Energetic-Particle-Driven Geodesic Acoustic Modes on Turbulence
    Zarzoso, D.
    Sarazin, Y.
    Garbet, X.
    Dumont, R.
    Strugarek, A.
    Abiteboul, J.
    Cartier-Michaud, T.
    Dif-Pradalier, G.
    Ghendrih, Ph
    Grandgirard, V.
    Latu, G.
    Passeron, C.
    Thomine, O.
    PHYSICAL REVIEW LETTERS, 2013, 110 (12)
  • [9] Gyrokinetic investigation of the nonlinear interaction of Alfven instabilities and energetic particle-driven geodesic acoustic modes
    Vannini, F.
    Biancalani, A.
    Bottino, A.
    Hayward-Schneider, T.
    Lauber, Ph
    Mishchenko, A.
    Poli, E.
    Vlad, G.
    PHYSICS OF PLASMAS, 2021, 28 (07)
  • [10] Enhancement and suppression of turbulence by energetic-particle-driven geodesic acoustic modes
    Sasaki, M.
    Itoh, K.
    Hallatschek, K.
    Kasuya, N.
    Lesur, M.
    Kosuga, Y.
    Itoh, S. -I.
    SCIENTIFIC REPORTS, 2017, 7