Abstract
New ICRH antennas on JET were designed to couple to the new JET divertor plasma configurations and to improve the Fast Wave Current Drive (FWCD) capabilities. The A2 antenna consists of 4 straps whose currents can be phased at arbitrary angles. The real time automatic tuning acts on frequency, line length (line phase shifters) and stub length. Provision is made for the coupling resistance/plasma position feedback to accommodate the fast changes in antenna loading. The first coupling, tuning and heating results are reported in 0{pi}0{pi}, 0000 and 00{pi}{pi} phasing. A new antenna model is described, which was developed to simulate the measured antenna loading in terms of plasma parameters and to provide a starting point for the real time automatic tuning. 5 refs., 4 figs.
Bures, M;
Bhatnagar, V;
Brown, T;
Fechner, B;
Gormezano, C;
Kaye, A;
Lennholm, M;
Righi, E;
Rimini, F;
Sibley, A;
Start, D;
Wade, T;
[1]
Goulding, R;
[2]
Lamalle, P;
[3]
Nguyen, F
[4]
- Commission of the European Communities, Abingdon (United Kingdom). JET Joint Undertaking
- Oak Ridge National Lab., TN (United States)
- Ecole Royale Militaire, Brussels (Belgium). Lab. de Physique des Plasmas
- CEA Centre d`Etudes de Cadarache, 13 - Saint-Paul-lez-Durance (France)
Citation Formats
Bures, M, Bhatnagar, V, Brown, T, Fechner, B, Gormezano, C, Kaye, A, Lennholm, M, Righi, E, Rimini, F, Sibley, A, Start, D, Wade, T, Goulding, R, Lamalle, P, and Nguyen, F.
The new JET phased ICRH array: first experiments and modelling.
France: N. p.,
1994.
Web.
Bures, M, Bhatnagar, V, Brown, T, Fechner, B, Gormezano, C, Kaye, A, Lennholm, M, Righi, E, Rimini, F, Sibley, A, Start, D, Wade, T, Goulding, R, Lamalle, P, & Nguyen, F.
The new JET phased ICRH array: first experiments and modelling.
France.
Bures, M, Bhatnagar, V, Brown, T, Fechner, B, Gormezano, C, Kaye, A, Lennholm, M, Righi, E, Rimini, F, Sibley, A, Start, D, Wade, T, Goulding, R, Lamalle, P, and Nguyen, F.
1994.
"The new JET phased ICRH array: first experiments and modelling."
France.
@misc{etde_456204,
title = {The new JET phased ICRH array: first experiments and modelling}
author = {Bures, M, Bhatnagar, V, Brown, T, Fechner, B, Gormezano, C, Kaye, A, Lennholm, M, Righi, E, Rimini, F, Sibley, A, Start, D, Wade, T, Goulding, R, Lamalle, P, and Nguyen, F}
abstractNote = {New ICRH antennas on JET were designed to couple to the new JET divertor plasma configurations and to improve the Fast Wave Current Drive (FWCD) capabilities. The A2 antenna consists of 4 straps whose currents can be phased at arbitrary angles. The real time automatic tuning acts on frequency, line length (line phase shifters) and stub length. Provision is made for the coupling resistance/plasma position feedback to accommodate the fast changes in antenna loading. The first coupling, tuning and heating results are reported in 0{pi}0{pi}, 0000 and 00{pi}{pi} phasing. A new antenna model is described, which was developed to simulate the measured antenna loading in terms of plasma parameters and to provide a starting point for the real time automatic tuning. 5 refs., 4 figs.}
place = {France}
year = {1994}
month = {Jul}
}
title = {The new JET phased ICRH array: first experiments and modelling}
author = {Bures, M, Bhatnagar, V, Brown, T, Fechner, B, Gormezano, C, Kaye, A, Lennholm, M, Righi, E, Rimini, F, Sibley, A, Start, D, Wade, T, Goulding, R, Lamalle, P, and Nguyen, F}
abstractNote = {New ICRH antennas on JET were designed to couple to the new JET divertor plasma configurations and to improve the Fast Wave Current Drive (FWCD) capabilities. The A2 antenna consists of 4 straps whose currents can be phased at arbitrary angles. The real time automatic tuning acts on frequency, line length (line phase shifters) and stub length. Provision is made for the coupling resistance/plasma position feedback to accommodate the fast changes in antenna loading. The first coupling, tuning and heating results are reported in 0{pi}0{pi}, 0000 and 00{pi}{pi} phasing. A new antenna model is described, which was developed to simulate the measured antenna loading in terms of plasma parameters and to provide a starting point for the real time automatic tuning. 5 refs., 4 figs.}
place = {France}
year = {1994}
month = {Jul}
}