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Hamiltonian analysis of fast wave current drive in tokamak plasmas

Abstract

The Hamiltonian formalism is used to analyze the direct resonant interaction between the fast magnetosonic wave and the electrons in a tokamak plasma. The intrinsic stochasticity of the electron phase space trajectories is derived, and together with extrinsic de-correlation processes, assesses the validity of the quasilinear approximation for the kinetic studies of fast wave current drive (FWCD). A full-wave resolution of the Maxwell-Vlasov set of equations provides the exact pattern of the wave fields in a complete tokamak geometry, for a realistic antenna spectrum. The local quasilinear diffusion tensor is derived from the wave fields, and is used for a computation of the driven current and deposited power profiles, the current drive efficiency, including possible non-linear effects in the kinetic equation. Several applications of FWCD on existing and future machines are given, as well as results concerning combination of FWCD with other non inductive current drive methods. An analytical expression for the current drive efficiency is given in the high single-pass absorption regimes. (authors). 20 figs., 1 tab., 26 refs.
Authors:
Becoulet, A; Fraboulet, D; Giruzzi, G; Moreau, D; Saoutic, B; [1]  Chinardet, J [2] 
  1. Association Euratom-CEA, Centre d`Etudes de Cadarache, 13 - Saint-Paul-lez-Durance (France). Dept. de Recherches sur la Fusion Controlee
  2. CISI Ingenierie, Centre d`Etudes de Cadarache, 13 - Saint-Paul-lez-Durance (France)
Publication Date:
Dec 01, 1993
Product Type:
Technical Report
Report Number:
EUR-CEA-FC-1505
Reference Number:
SCA: 700350; PA: AIX-26:053982; EDB-95:094333; ERA-20:020380; SN: 95001414723
Resource Relation:
Other Information: PBD: Dec 1993
Subject:
70 PLASMA PHYSICS AND FUSION; NON-INDUCTIVE CURRENT DRIVE; TOKAMAK DEVICES; TRANSPORT THEORY; COUPLING; CURRENT-DRIVE HEATING; ELECTRON PLASMA WAVES; ELECTRONS; HAMILTONIAN FUNCTION; HIGH-BETA PLASMA; MAGNETOACOUSTIC WAVES; QUASILINEAR PROBLEMS
OSTI ID:
66374
Research Organizations:
Association Euratom-CEA, Centre d`Etudes de Cadarache, 13 - Saint-Paul-lez-Durance (France). Dept. de Recherches sur la Fusion Controlee
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: TI95631981; TRN: FR9501617053982
Availability:
INIS; OSTI as TI95631981
Submitting Site:
FRN
Size:
66 p.
Announcement Date:
Jul 13, 1995

Citation Formats

Becoulet, A, Fraboulet, D, Giruzzi, G, Moreau, D, Saoutic, B, and Chinardet, J. Hamiltonian analysis of fast wave current drive in tokamak plasmas. France: N. p., 1993. Web.
Becoulet, A, Fraboulet, D, Giruzzi, G, Moreau, D, Saoutic, B, & Chinardet, J. Hamiltonian analysis of fast wave current drive in tokamak plasmas. France.
Becoulet, A, Fraboulet, D, Giruzzi, G, Moreau, D, Saoutic, B, and Chinardet, J. 1993. "Hamiltonian analysis of fast wave current drive in tokamak plasmas." France.
@misc{etde_66374,
title = {Hamiltonian analysis of fast wave current drive in tokamak plasmas}
author = {Becoulet, A, Fraboulet, D, Giruzzi, G, Moreau, D, Saoutic, B, and Chinardet, J}
abstractNote = {The Hamiltonian formalism is used to analyze the direct resonant interaction between the fast magnetosonic wave and the electrons in a tokamak plasma. The intrinsic stochasticity of the electron phase space trajectories is derived, and together with extrinsic de-correlation processes, assesses the validity of the quasilinear approximation for the kinetic studies of fast wave current drive (FWCD). A full-wave resolution of the Maxwell-Vlasov set of equations provides the exact pattern of the wave fields in a complete tokamak geometry, for a realistic antenna spectrum. The local quasilinear diffusion tensor is derived from the wave fields, and is used for a computation of the driven current and deposited power profiles, the current drive efficiency, including possible non-linear effects in the kinetic equation. Several applications of FWCD on existing and future machines are given, as well as results concerning combination of FWCD with other non inductive current drive methods. An analytical expression for the current drive efficiency is given in the high single-pass absorption regimes. (authors). 20 figs., 1 tab., 26 refs.}
place = {France}
year = {1993}
month = {Dec}
}