Abstract
Numerical simulations of current drive in tokamaks by fast waves (FWCD) have been performed in the range of the ion cyclotron and at lower frequencies via 3-Dimensional numerical code ICTOR. Trapped particles effects were taken into account in the calculation of the fast wave current drive efficiency and the bootstrap current generation. The global efficiency of FWCD if found to be {gamma}{approx} 0.1 x 10{sup 20} AW{sup -1} m{sup -2} for the Joint European Torus tokamak (JET) parameters at a central electron temperature of {approx} 10 kev. The efficiency of FWCD for reactor-like plasmas is found to be {gamma}{approx}0.3 x 10{sup 20} AW{sup -1} m{sup -2} for {approx} 100% of FWCD and {gamma}{approx} 1 x 10{sup 20} AW{sup -1} m{sup -2} for FWCD and {approx} 65% of bootstrap in a total current of {approx} 25MA at a 25kev central temperature with a density of {approx}10{sup 20} m{sup -3} and major radius R {approx} 8m. Non-inductive current density profiles are studied. Broad FWCD current profiles are obtained for flat reactor temperature and density profiles with bootstrap current concentrated at the plasma edge. The possibility of a steady-state reactor on full wave (FW) with a large fraction of bootstrap current is discussed.
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Citation Formats
Dmitrieva, M V, Eriksson, L -G, and Gambier, D J.
Full-wave simulations of current profiles for fast magnetosonic wave current drive.
United Kingdom: N. p.,
1992.
Web.
Dmitrieva, M V, Eriksson, L -G, & Gambier, D J.
Full-wave simulations of current profiles for fast magnetosonic wave current drive.
United Kingdom.
Dmitrieva, M V, Eriksson, L -G, and Gambier, D J.
1992.
"Full-wave simulations of current profiles for fast magnetosonic wave current drive."
United Kingdom.
@misc{etde_10152180,
title = {Full-wave simulations of current profiles for fast magnetosonic wave current drive}
author = {Dmitrieva, M V, Eriksson, L -G, and Gambier, D J}
abstractNote = {Numerical simulations of current drive in tokamaks by fast waves (FWCD) have been performed in the range of the ion cyclotron and at lower frequencies via 3-Dimensional numerical code ICTOR. Trapped particles effects were taken into account in the calculation of the fast wave current drive efficiency and the bootstrap current generation. The global efficiency of FWCD if found to be {gamma}{approx} 0.1 x 10{sup 20} AW{sup -1} m{sup -2} for the Joint European Torus tokamak (JET) parameters at a central electron temperature of {approx} 10 kev. The efficiency of FWCD for reactor-like plasmas is found to be {gamma}{approx}0.3 x 10{sup 20} AW{sup -1} m{sup -2} for {approx} 100% of FWCD and {gamma}{approx} 1 x 10{sup 20} AW{sup -1} m{sup -2} for FWCD and {approx} 65% of bootstrap in a total current of {approx} 25MA at a 25kev central temperature with a density of {approx}10{sup 20} m{sup -3} and major radius R {approx} 8m. Non-inductive current density profiles are studied. Broad FWCD current profiles are obtained for flat reactor temperature and density profiles with bootstrap current concentrated at the plasma edge. The possibility of a steady-state reactor on full wave (FW) with a large fraction of bootstrap current is discussed. It appears to be impractical to rely on such an external current driven (CD) scheme for a reactor as long a {gamma} is less than 2 x 10{sup 20} AW{sup -1} m{sup -2}. (Author).}
place = {United Kingdom}
year = {1992}
month = {Dec}
}
title = {Full-wave simulations of current profiles for fast magnetosonic wave current drive}
author = {Dmitrieva, M V, Eriksson, L -G, and Gambier, D J}
abstractNote = {Numerical simulations of current drive in tokamaks by fast waves (FWCD) have been performed in the range of the ion cyclotron and at lower frequencies via 3-Dimensional numerical code ICTOR. Trapped particles effects were taken into account in the calculation of the fast wave current drive efficiency and the bootstrap current generation. The global efficiency of FWCD if found to be {gamma}{approx} 0.1 x 10{sup 20} AW{sup -1} m{sup -2} for the Joint European Torus tokamak (JET) parameters at a central electron temperature of {approx} 10 kev. The efficiency of FWCD for reactor-like plasmas is found to be {gamma}{approx}0.3 x 10{sup 20} AW{sup -1} m{sup -2} for {approx} 100% of FWCD and {gamma}{approx} 1 x 10{sup 20} AW{sup -1} m{sup -2} for FWCD and {approx} 65% of bootstrap in a total current of {approx} 25MA at a 25kev central temperature with a density of {approx}10{sup 20} m{sup -3} and major radius R {approx} 8m. Non-inductive current density profiles are studied. Broad FWCD current profiles are obtained for flat reactor temperature and density profiles with bootstrap current concentrated at the plasma edge. The possibility of a steady-state reactor on full wave (FW) with a large fraction of bootstrap current is discussed. It appears to be impractical to rely on such an external current driven (CD) scheme for a reactor as long a {gamma} is less than 2 x 10{sup 20} AW{sup -1} m{sup -2}. (Author).}
place = {United Kingdom}
year = {1992}
month = {Dec}
}