Toroidal coupling in the kinetic response to edge magnetic perturbations

被引：4

作者：

Spizzo, G. ^{[1
]}

Agostini, M. ^{[1
]}

Scarin, P. ^{[1
]}

White, R. B. ^{[2
]}

Schmitz, O. ^{[3
]}

Spolaore, M. ^{[1
]}

Terranova, D. ^{[1
]}

Veranda, M. ^{[1
]}

Vianello, N. ^{[1
]}

机构：

[1] Univ Padua, Ist Nazl Fis Nucl, Acciaierie Venete SpA, Consorzio RFX,CNR,ENEA, Corso Stati Uniti 4, I-35127 Padua, Italy

[2] Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA

[3] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA

来源：

NUCLEAR FUSION | 2017年 / 57卷 / 12期

关键词：

tokamaks; chaos; magnetic islands; magnetic perturbations; REVERSED-FIELD PINCH; SELF-ORGANIZATION; RFX; TRANSPORT;

D O I：

10.1088/1741-4326/aa8a9c

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：

The magnetic topology of the stochastic edge of a helical reversed-field pinch, with helicity m/n, shows to be deeply influenced by higher harmonics (m +/- 1)/n, with the same n, due to toroidal coupling. As a consequence, by measuring kinetic quantities in a particular theta, phi location, one can incur in substantial errors or mis-interpretations of the kinetic plasma response: only a full 3D coverage of theta, phi angles can reveal the real topology of the plasma. This can be a caveat for MP application in tokamaks, because it shows that toroidal and poloidal sidebands, though smaller than the base mode by a factor similar to epsilon = a/R, can have a sizable effect on the kinetic response of the edge plasma, and thus on related issues (for example, ELM stabilization and suppression).

引用

页数：12

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