Linear gyrokinetic particle-in-cell simulations of Alfven instabilities in tokamaks

被引：19

作者：

Biancalani, A. ^{[1
]}

Bottino, A. ^{[1
]}

Briguglio, S. ^{[2
]}

Konies, A. ^{[3
]}

Lauber, Ph. ^{[1
]}

Mishchenko, A. ^{[3
]}

Poli, E. ^{[1
]}

Scott, B. D. ^{[1
]}

Zonca, F. ^{[2
,4
]}

机构：

[1] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[2] ENEA CR Frascati, Via E Fermi 45, I-6500044 Frascati, Italy

[3] Max Planck Inst Plasma Phys, D-17491 Greifswald, Germany

[4] Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310003, Zhejiang, Peoples R China

来源：

PHYSICS OF PLASMAS | 2016年 / 23卷 / 01期

关键词：

WAVES;

D O I：

10.1063/1.4939803

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 linear dynamics of Alfven modes in tokamaks is investigated here by means of the global gyrokinetic particle-in-cell code ORB5, within the NEMORB project. The model equations are shown and the local shear Alfven wave dispersion relation is derived, recovering the continuous spectrum in the incompressible ideal MHD limit. A verification and benchmark analysis is performed for continuum modes in a cylinder and for toroidicity-induced Alfven Eigenmodes. Modes in a reversed-shear equilibrium are also investigated, and the dependence of the spatial structure in the poloidal plane on the equilibrium parameters is described. In particular, a phase-shift in the poloidal angle is found to be present for modes whose frequency touches the continuum, whereas a radial symmetry is found to be characteristic of modes in the continuum gap.

引用

页数：12

共 34 条

[1] Existence of electromagnetic-hydrodynamic waves [J].

Alfven, H .

NATURE, 1942, 150 :405-406

[2]

Alfven H., 1950, COSMICAL ELECTRODYNA

[3] Gyrokinetic simulation of global and local Alfven eigenmodes driven by energetic particles in a DIII-D discharge [J].

Bass, E. M. ;

Waltz, R. E. .

PHYSICS OF PLASMAS, 2013, 20 (01)

[4] Numerical validation of the electromagnetic gyrokinetic code NEMORB on global axisymmetric modes [J].

Biancalani, A. ;

Bottino, A. ;

Lauber, Ph. ;

Zarzoso, D. .

NUCLEAR FUSION, 2014, 54 (10)

[5]

Biancalani A., COMPUT PHYS CO UNPUB

[6] Monte Carlo particle-in-cell methods for the simulation of the Vlasov-Maxwell gyrokinetic equations [J].

Bottino, A. ;

Sonnendruecker, E. .

JOURNAL OF PLASMA PHYSICS, 2015, 81

[7] Global simulations of tokamak microturbulence: finite-β effects and collisions [J].

Bottino, A. ;

Vernay, T. ;

Scott, B. ;

Brunner, S. ;

Hatzky, R. ;

Jolliet, S. ;

McMillan, B. F. ;

Tran, T. M. ;

Villard, L. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2011, 53 (12)

[8] Plasma pressure effect on Alfven cascade eigenmodes [J].

Breizman, BN ;

Pekker, MS ;

Sharapov, SE .

PHYSICS OF PLASMAS, 2005, 12 (11) :1-9

[9] HYBRID MAGNETOHYDRODYNAMIC-GYROKINETIC SIMULATION OF TOROIDAL ALFVEN MODES [J].

BRIGUGLIO, S ;

VLAD, G ;

ZONCA, F ;

KAR, C .

PHYSICS OF PLASMAS, 1995, 2 (10) :3711-3723

[10] Foundations of nonlinear gyrokinetic theory [J].

Brizard, A. J. ;

Hahm, T. S. .

REVIEWS OF MODERN PHYSICS, 2007, 79 (02) :421-468

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