Journal ArticleDOI
Neoclassical transport of impurities in tokamak plasmas
S.P. Hirshman,D.J. Sigmar +1 more
TLDR
In this paper, a closed set of moment equations is presented for the time evolution of thermodynamic and magnetic field quantities which results from collisional transport of the plasma and two-dimensional motion of the magnetic flux surface geometry.Abstract:
Tokamak plasmas are inherently comprised of multiple ion species. This is due to wall-bred impurities and, in future reactors, will result from fusion-born alpha particles. Relatively small densities nI, of highly charged non-hydrogenic impurities can strongly influence plasma transport properties whenever . The determination of the complete neoclassical Onsager matrix for a toroidally confined multispecies plasma, which provides the linear relation between the surface averaged radial fluxes and the thermodynamic forces (i.e. gradients of density and temperature, and the parallel electric field), is reviewed. A closed set of one-dimensional moment equations is presented for the time evolution of thermodynamic and magnetic field quantities which results from collisional transport of the plasma and two-dimensional motion of the magnetic flux surface geometry. The effects of neutral-beam injection on the equilibrium and transport properties of a toroidal plasma are consistently included.read more
Citations
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Journal ArticleDOI
Zonal flows in plasma—a review
TL;DR: A comprehensive review of zonal flow phenomena in plasmas is presented in this article, where the focus is on zonal flows generated by drift waves and the back-interaction of ZF on the drift waves, and various feedback loops by which the system regulates and organizes itself.
Journal ArticleDOI
Chapter 4: Power and particle control
A. Loarte,Bruce Lipschultz,A.S. Kukushkin,G. F. Matthews,P.C. Stangeby,Nobuyuki Asakura,G. F. Counsell,G. Federici,A. Kallenbach,K. Krieger,A. Mahdavi,V. Philipps,Detlev Reiter,J. Roth,J. D. Strachan,D.G. Whyte,R.P. Doerner,T. Eich,W. Fundamenski,A. Herrmann,M.E. Fenstermacher,Philippe Ghendrih,M. Groth,A. Kirschner,S. Konoshima,Brian LaBombard,Peter Lang,A.W. Leonard,P. Monier-Garbet,Rudolf Neu,H.D. Pacher,B. Pégourié,R.A. Pitts,Shuichi Takamura,J. L. Terry,E. Tsitrone +35 more
TL;DR: In this paper, the authors describe the processes that will determine the properties of the plasma edge and its interaction with material elements in ITER and compare their predictions with the new experimental results.
Journal ArticleDOI
Chapter 2: Plasma confinement and transport
E. J. Doyle,Wayne A Houlberg,Yutaka Kamada,V. S. Mukhovatov,T.H. Osborne,A. R. Polevoi,G. Bateman,J. W. Connor,J. G. Cordey,T. Fujita,Xavier Garbet,T. S. Hahm,L. D. Horton,A. E. Hubbard,F. Imbeaux,Frank Jenko,J. E. Kinsey,Yasuaki Kishimoto,J.X. Li,T. C. Luce,Y. R. Martin,M. Ossipenko,V.V. Parail,A. G. Peeters,T. L. Rhodes,J. E. Rice,C. M. Roach,V. A. Rozhansky,F. Ryter,G. Saibene,R. Sartori,A. C. C. Sips,J. A. Snipes,M. Sugihara,E. J. Synakowski,H. Takenaga,Tomonori Takizuka,K. Thomsen,M. R. Wade,H. R. Wilson,Itpa Confinement Database,Itpa Pedestal +41 more
TL;DR: The understanding and predictive capability of transport physics and plasma confinement is reviewed from the perspective of achieving reactor-scale burning plasmas in the ITER tokamak, for both core and edge plasma regions.
Journal ArticleDOI
Bootstrap current and neoclassical transport in tokamaks of arbitrary collisionality and aspect ratio
TL;DR: In this article, a multi-species fluid model is described for the steady state parallel and radial force balance equations in axisymmetric tokamak plasmas, and the bootstrap current, electrical resistivity and particle and heat fluxes are evaluated in terms of the rotation velocities and friction and viscosity coefficients.
Journal ArticleDOI
Flow shear induced fluctuation suppression in finite aspect ratio shaped tokamak plasma
T.S. Hahm,Keith H. Burrell +1 more
TL;DR: In this paper, the suppression of turbulence by the E×B flow shear and parallel Flow Shear in an arbitrary shape finite aspect ratio tokamak plasma using the two point nonlinear analysis was investigated.
References
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Book
Reviews of Plasma Physics
TL;DR: In this article, Rozhansky et al. studied the relationship between transverse conductivity and the generation of self-consistent electric fields in strongly ionized magnetized plasma.
Journal ArticleDOI
Transport phenomena in a completely ionized gas
Lyman Spitzer,Richard Harm +1 more
TL;DR: In this paper, the effect of mutual electron encounters is considered as a problem of diffusion in velocity space, taking into account a term which previously had been neglected, and the appropriate integro-differential equations are then solved numerically.
Journal ArticleDOI
Theory of plasma transport in toroidal confinement systems
F. L. Hinton,Richard D Hazeltine +1 more
TL;DR: A review of magnetized-plasma transport theory can be found in this paper, with a focus on the application to axisymmetric tokamak-type confinement systems.