Fast wave current drive in JET ITB-plasma

T. Hellsten; M. Laxåback; T. Bergkvist; T. Johnson; M. Mantsinen; G. Matthews; F. Meo; F. Nguyen; J. M. Noterdaeme; C. C. Petty; T. Tala; D. Van Eester; P. Andrew; P. Beaumont; V. Bobkov; M. Brix; J. Brzozowski; L. G. Eriksson; C. Giroud; E. Joffrin; V. Kiptily; J. Mailloux; M. L. Mayoral; I. Monakhov; R. Sartori; A. Staebler; E. Rachlew; E. Tennfors; A. Tuccillo; A. Walden; K. D. Zastrow

doi:10.1063/1.2098240

Fast wave current drive in JET ITB-plasma

T. Hellsten
, M. Laxåback
, T. Bergkvist
, T. Johnson
, M. Mantsinen
, G. Matthews
, F. Meo
, F. Nguyen
, J. M. Noterdaeme
, C. C. Petty
, T. Tala
, D. Van Eester
, P. Andrew
, P. Beaumont
, V. Bobkov
, M. Brix
, J. Brzozowski
, L. G. Eriksson
, C. Giroud
, E. Joffrin

V. Kiptily, J. Mailloux, M. L. Mayoral, I. Monakhov, R. Sartori, A. Staebler, E. Rachlew, E. Tennfors, A. Tuccillo, A. Walden, K. D. Zastrow

Laboratory for Plasma Physics

Swedish Research Council
Helsinki University of Technology
National Laboratory
Commissariat à l'Énergie Atomique (CEA)
Max-Planck-Institut für Plasmaphysik
University of Ghent
General Atomics
Culham Centre for Fusion Energy
EFDA CSU-Garching
Association Euratom-ENEA

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Fast wave current drive has been performed in JET plasmas with internal transport barriers, ITBs, and strongly reversed magnetic shear. Although the current drive efficiency of the power absorbed on the electrons is fairly high, only small effects are seen in the central current density. The main reasons are the parasitic absorption of RF power, the strongly inductive nature of the plasma and the interplay between the fast wave driven current and bootstrap current. The direct electron heating in the FWCD experiments is found to be strongly degraded compared to that with the dipole phasing.

Original language	English
Title of host publication	RADIO FREQUENCY POWER IN PLASMAS
Subtitle of host publication	16th Topical Conference on Radio Frequency Power in Plasmas
Pages	273-278
Number of pages	6
DOIs	https://doi.org/10.1063/1.2098240
Publication status	Published - 26 Sept 2005
Event	RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas - Park City, UT, United States Duration: 11 Apr 2005 → 13 Apr 2005

Publication series

Name	AIP Conference Proceedings
Volume	787
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas
Country/Territory	United States
City	Park City, UT
Period	11/04/05 → 13/04/05

Keywords

Fast Wave Current Drive
ICRH
ITB

Access to Document

10.1063/1.2098240

Cite this

Hellsten, T., Laxåback, M., Bergkvist, T., Johnson, T., Mantsinen, M., Matthews, G., Meo, F., Nguyen, F., Noterdaeme, J. M., Petty, C. C., Tala, T., Van Eester, D., Andrew, P., Beaumont, P., Bobkov, V., Brix, M., Brzozowski, J., Eriksson, L. G., Giroud, C., ... Zastrow, K. D. (2005). Fast wave current drive in JET ITB-plasma. In RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas (pp. 273-278). (AIP Conference Proceedings; Vol. 787). https://doi.org/10.1063/1.2098240

@inproceedings{2121dbd51df2469d872fe8b62fdc7d0e,

title = "Fast wave current drive in JET ITB-plasma",

abstract = "Fast wave current drive has been performed in JET plasmas with internal transport barriers, ITBs, and strongly reversed magnetic shear. Although the current drive efficiency of the power absorbed on the electrons is fairly high, only small effects are seen in the central current density. The main reasons are the parasitic absorption of RF power, the strongly inductive nature of the plasma and the interplay between the fast wave driven current and bootstrap current. The direct electron heating in the FWCD experiments is found to be strongly degraded compared to that with the dipole phasing.",

keywords = "Fast Wave Current Drive, ICRH, ITB",

author = "T. Hellsten and M. Lax{\aa}back and T. Bergkvist and T. Johnson and M. Mantsinen and G. Matthews and F. Meo and F. Nguyen and Noterdaeme, \{J. M.\} and Petty, \{C. C.\} and T. Tala and \{Van Eester\}, D. and P. Andrew and P. Beaumont and V. Bobkov and M. Brix and J. Brzozowski and Eriksson, \{L. G.\} and C. Giroud and E. Joffrin and V. Kiptily and J. Mailloux and Mayoral, \{M. L.\} and I. Monakhov and R. Sartori and A. Staebler and E. Rachlew and E. Tennfors and A. Tuccillo and A. Walden and Zastrow, \{K. D.\}",

year = "2005",

month = sep,

day = "26",

doi = "10.1063/1.2098240",

language = "English",

isbn = "0735402760",

series = "AIP Conference Proceedings",

pages = "273--278",

booktitle = "RADIO FREQUENCY POWER IN PLASMAS",

note = "RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas ; Conference date: 11-04-2005 Through 13-04-2005",

}

Hellsten, T, Laxåback, M, Bergkvist, T, Johnson, T, Mantsinen, M, Matthews, G, Meo, F, Nguyen, F, Noterdaeme, JM, Petty, CC, Tala, T, Van Eester, D, Andrew, P, Beaumont, P, Bobkov, V, Brix, M, Brzozowski, J, Eriksson, LG, Giroud, C, Joffrin, E, Kiptily, V, Mailloux, J, Mayoral, ML, Monakhov, I, Sartori, R, Staebler, A, Rachlew, E, Tennfors, E, Tuccillo, A, Walden, A & Zastrow, KD 2005, Fast wave current drive in JET ITB-plasma. in RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas. AIP Conference Proceedings, vol. 787, pp. 273-278, RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas, Park City, UT, United States, 11/04/05. https://doi.org/10.1063/1.2098240

TY - GEN

T1 - Fast wave current drive in JET ITB-plasma

AU - Hellsten, T.

AU - Laxåback, M.

AU - Bergkvist, T.

AU - Johnson, T.

AU - Mantsinen, M.

AU - Matthews, G.

AU - Meo, F.

AU - Nguyen, F.

AU - Noterdaeme, J. M.

AU - Petty, C. C.

AU - Tala, T.

AU - Van Eester, D.

AU - Andrew, P.

AU - Beaumont, P.

AU - Bobkov, V.

AU - Brix, M.

AU - Brzozowski, J.

AU - Eriksson, L. G.

AU - Giroud, C.

AU - Joffrin, E.

AU - Kiptily, V.

AU - Mailloux, J.

AU - Mayoral, M. L.

AU - Monakhov, I.

AU - Sartori, R.

AU - Staebler, A.

AU - Rachlew, E.

AU - Tennfors, E.

AU - Tuccillo, A.

AU - Walden, A.

AU - Zastrow, K. D.

PY - 2005/9/26

Y1 - 2005/9/26

N2 - Fast wave current drive has been performed in JET plasmas with internal transport barriers, ITBs, and strongly reversed magnetic shear. Although the current drive efficiency of the power absorbed on the electrons is fairly high, only small effects are seen in the central current density. The main reasons are the parasitic absorption of RF power, the strongly inductive nature of the plasma and the interplay between the fast wave driven current and bootstrap current. The direct electron heating in the FWCD experiments is found to be strongly degraded compared to that with the dipole phasing.

AB - Fast wave current drive has been performed in JET plasmas with internal transport barriers, ITBs, and strongly reversed magnetic shear. Although the current drive efficiency of the power absorbed on the electrons is fairly high, only small effects are seen in the central current density. The main reasons are the parasitic absorption of RF power, the strongly inductive nature of the plasma and the interplay between the fast wave driven current and bootstrap current. The direct electron heating in the FWCD experiments is found to be strongly degraded compared to that with the dipole phasing.

KW - Fast Wave Current Drive

KW - ICRH

KW - ITB

UR - https://www.scopus.com/pages/publications/33749669219

U2 - 10.1063/1.2098240

DO - 10.1063/1.2098240

M3 - Conference contribution

AN - SCOPUS:33749669219

SN - 0735402760

SN - 9780735402768

T3 - AIP Conference Proceedings

SP - 273

EP - 278

BT - RADIO FREQUENCY POWER IN PLASMAS

T2 - RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas

Y2 - 11 April 2005 through 13 April 2005

ER -

Fast wave current drive in JET ITB-plasma

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Conference

Keywords

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