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Peeters, A. G.*; Angioni, C.*; Bortolon, A.*; Camenen, Y.*; Casson, F. J.*; Duval, B.*; Fiederspiel, L.*; Hornsby, W. A.*; 井戸村 泰宏; Hein, T.*; et al.
Nuclear Fusion, 51(9), p.094027_1 - 094027_13, 2011/09
被引用回数:99 パーセンタイル:97.21(Physics, Fluids & Plasmas)Toroidal momentum transport mechanisms are reviewed and put in a broader perspective. The generation of a finite momentum flux is closely related with the breaking of symmetry (parity) along the field. The symmetry argument allows for the systematic identification of possible transport mechanisms. Those that appear to lowest order in the normalized Larmor radius (the diagonal part, Coriolis pinch, EB shearing, particle flux, and up-down asymmetric equilibriums) are reasonably well understood. At higher order, thought to be of importance in the plasma edge, the theory is still under development.
Peeters, A. G.*; Angioni, C.*; Bortolon, A.*; Camenen, Y.*; Casson, F. J.*; Dubal, B.*; Fiederspiel, L.*; Hornsby, W. A.*; 井戸村 泰宏; Kluy, N.*; et al.
Proceedings of 23rd IAEA Fusion Energy Conference (FEC 2010) (CD-ROM), 13 Pages, 2011/03
Toroidal momentum transport mechanisms are reviewed and put in a broader perspective. The generation of a finite momentum flux is closely related with the breaking of symmetry along the field. The symmetry argument allows for the systematic identification of possible transport mechanisms. Those that appear to lowest order in the normalized Larmor radius (the diagonal part, Coriolis pinch, EB shearing, particle flux, and up-down asymmetric equilibriums) are reasonably well understood. At higher order, thought to be of importance in the plasma edge, the theory is still under development.
Rice, J. E.*; Ince-Cushman, A.*; de Grassie, J. S.*; Eriksson, L.-G.*; 坂本 宜照; Scarabosio, A.*; Bortolon, A.*; Burrell, K. H.*; Fenzi-Bonizec, C.*; Greenwald, M. J.*; et al.
Proceedings of 21st IAEA Fusion Energy Conference (FEC 2006) (CD-ROM), 8 Pages, 2007/03
多くのトカマクで観測される自発的なトロイダル回転速度のパラメータ依存性を検討し、将来の装置への外挿を試みた。JET, Alcator C-Mod, Tore Supra, DIII-D, JT-60U, TCVでは共通して自発回転速度が蓄積エネルギーに比例することがわかった。また、幾つかの装置ではプラズマ電流に反比例する傾向を示した。これらの依存性を無次元パラメータで表現すると、マッハ数が規格化ベータ値に比例すると解釈できる。この傾向だけでは、バルーニング不安定性のようなMHD現象が回転を駆動する乱流過程に作用すると結論づけることはできない。しかしながら、この依存性から規格化ベータ=2.6のITERでは自発回転速度のマッハ数が0.02に達すると予測されるため、外部からの運動量入力がなくても自発回転だけで抵抗性壁モードの安定化が期待されると解釈できる。