Effect of the dynamic ergodic divertor in the TEXTOR tokamak on MHD stability, plasma rotation and transport

R. C. Wolf; W. Biel; M. F.M. De Bock; K. H. Finken; S. Günter; G. M.D. Hogeweij; S. Jachmich; M. W. Jakubowski; R. J.E. Jaspers; A. Krämer-Flecken; H. R. Koslowski; M. Lehnen; Y. Liang; B. Unterberg; S. K. Varshney; M. Von Hellermann; Q. Yu; O. Zimmermann; S. S. Abdullaev; A. J.H. Donné; U. Samm; B. Schweer; M. Tokar; E. Westerhof

doi:10.1088/0029-5515/45/12/026

Effect of the dynamic ergodic divertor in the TEXTOR tokamak on MHD stability, plasma rotation and transport

R. C. Wolf, W. Biel, M. F.M. De Bock, K. H. Finken, S. Günter, G. M.D. Hogeweij, S. Jachmich, M. W. Jakubowski, R. J.E. Jaspers, A. Krämer-Flecken, H. R. Koslowski, M. Lehnen, Y. Liang, B. Unterberg, S. K. Varshney, M. Von Hellermann, Q. Yu, O. Zimmermann, S. S. Abdullaev, A. J.H. DonnéU. Samm, B. Schweer, M. Tokar, E. Westerhof

Laboratory for Plasma Physics

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Abstract

With the dynamic ergodic divertor in TEXTOR fundamental effects of the coupling of external magnetic field perturbations to the confined plasma have been studied. The non-linear coupling between external (m/n ≤ 12/4) and internal modes (m/n ≤ 3/1) has been investigated. The critical perturbation field (m/n ≤ 3/1) for the excitation of an m/n ≤ 2/1 tearing mode depends not only on the magnitude but also on the direction of the toroidal angular momentum input by neutral beam injection (NBI). Below the excitation threshold of this mode a toroidal spin-up of the plasma has been observed, which only depends on the strength of the perturbation field. It is independent of both the rotation direction of the external perturbation field and the toroidal angular momentum supplied by the NBI.

Original language	English
Pages (from-to)	1700-1707
Number of pages	8
Journal	Nuclear Fusion
Volume	45
Issue number	12
DOIs	https://doi.org/10.1088/0029-5515/45/12/026
Publication status	Published - 1 Dec 2005

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Wolf, R. C., Biel, W., De Bock, M. F. M., Finken, K. H., Günter, S., Hogeweij, G. M. D., Jachmich, S., Jakubowski, M. W., Jaspers, R. J. E., Krämer-Flecken, A., Koslowski, H. R., Lehnen, M., Liang, Y., Unterberg, B., Varshney, S. K., Von Hellermann, M., Yu, Q., Zimmermann, O., Abdullaev, S. S., ... Westerhof, E. (2005). Effect of the dynamic ergodic divertor in the TEXTOR tokamak on MHD stability, plasma rotation and transport. Nuclear Fusion, 45(12), 1700-1707. https://doi.org/10.1088/0029-5515/45/12/026

@article{9704342f6a374b379b61a4d55d17430f,

title = "Effect of the dynamic ergodic divertor in the TEXTOR tokamak on MHD stability, plasma rotation and transport",

abstract = "With the dynamic ergodic divertor in TEXTOR fundamental effects of the coupling of external magnetic field perturbations to the confined plasma have been studied. The non-linear coupling between external (m/n ≤ 12/4) and internal modes (m/n ≤ 3/1) has been investigated. The critical perturbation field (m/n ≤ 3/1) for the excitation of an m/n ≤ 2/1 tearing mode depends not only on the magnitude but also on the direction of the toroidal angular momentum input by neutral beam injection (NBI). Below the excitation threshold of this mode a toroidal spin-up of the plasma has been observed, which only depends on the strength of the perturbation field. It is independent of both the rotation direction of the external perturbation field and the toroidal angular momentum supplied by the NBI.",

author = "Wolf, \{R. C.\} and W. Biel and \{De Bock\}, \{M. F.M.\} and Finken, \{K. H.\} and S. G{\"u}nter and Hogeweij, \{G. M.D.\} and S. Jachmich and Jakubowski, \{M. W.\} and Jaspers, \{R. J.E.\} and A. Kr{\"a}mer-Flecken and Koslowski, \{H. R.\} and M. Lehnen and Y. Liang and B. Unterberg and Varshney, \{S. K.\} and \{Von Hellermann\}, M. and Q. Yu and O. Zimmermann and Abdullaev, \{S. S.\} and Donn{\'e}, \{A. J.H.\} and U. Samm and B. Schweer and M. Tokar and E. Westerhof",

year = "2005",

month = dec,

day = "1",

doi = "10.1088/0029-5515/45/12/026",

language = "English",

volume = "45",

pages = "1700--1707",

journal = "Nuclear Fusion",

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Wolf, RC, Biel, W, De Bock, MFM, Finken, KH, Günter, S, Hogeweij, GMD, Jachmich, S, Jakubowski, MW, Jaspers, RJE, Krämer-Flecken, A, Koslowski, HR, Lehnen, M, Liang, Y, Unterberg, B, Varshney, SK, Von Hellermann, M, Yu, Q, Zimmermann, O, Abdullaev, SS, Donné, AJH, Samm, U, Schweer, B, Tokar, M & Westerhof, E 2005, 'Effect of the dynamic ergodic divertor in the TEXTOR tokamak on MHD stability, plasma rotation and transport', Nuclear Fusion, vol. 45, no. 12, pp. 1700-1707. https://doi.org/10.1088/0029-5515/45/12/026

TY - JOUR

T1 - Effect of the dynamic ergodic divertor in the TEXTOR tokamak on MHD stability, plasma rotation and transport

AU - Wolf, R. C.

AU - Biel, W.

AU - De Bock, M. F.M.

AU - Finken, K. H.

AU - Günter, S.

AU - Hogeweij, G. M.D.

AU - Jachmich, S.

AU - Jakubowski, M. W.

AU - Jaspers, R. J.E.

AU - Krämer-Flecken, A.

AU - Koslowski, H. R.

AU - Lehnen, M.

AU - Liang, Y.

AU - Unterberg, B.

AU - Varshney, S. K.

AU - Von Hellermann, M.

AU - Yu, Q.

AU - Zimmermann, O.

AU - Abdullaev, S. S.

AU - Donné, A. J.H.

AU - Samm, U.

AU - Schweer, B.

AU - Tokar, M.

AU - Westerhof, E.

PY - 2005/12/1

Y1 - 2005/12/1

N2 - With the dynamic ergodic divertor in TEXTOR fundamental effects of the coupling of external magnetic field perturbations to the confined plasma have been studied. The non-linear coupling between external (m/n ≤ 12/4) and internal modes (m/n ≤ 3/1) has been investigated. The critical perturbation field (m/n ≤ 3/1) for the excitation of an m/n ≤ 2/1 tearing mode depends not only on the magnitude but also on the direction of the toroidal angular momentum input by neutral beam injection (NBI). Below the excitation threshold of this mode a toroidal spin-up of the plasma has been observed, which only depends on the strength of the perturbation field. It is independent of both the rotation direction of the external perturbation field and the toroidal angular momentum supplied by the NBI.

AB - With the dynamic ergodic divertor in TEXTOR fundamental effects of the coupling of external magnetic field perturbations to the confined plasma have been studied. The non-linear coupling between external (m/n ≤ 12/4) and internal modes (m/n ≤ 3/1) has been investigated. The critical perturbation field (m/n ≤ 3/1) for the excitation of an m/n ≤ 2/1 tearing mode depends not only on the magnitude but also on the direction of the toroidal angular momentum input by neutral beam injection (NBI). Below the excitation threshold of this mode a toroidal spin-up of the plasma has been observed, which only depends on the strength of the perturbation field. It is independent of both the rotation direction of the external perturbation field and the toroidal angular momentum supplied by the NBI.

UR - https://www.scopus.com/pages/publications/28944438760

U2 - 10.1088/0029-5515/45/12/026

DO - 10.1088/0029-5515/45/12/026

M3 - Article

AN - SCOPUS:28944438760

SN - 0029-5515

VL - 45

SP - 1700

EP - 1707

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 12

ER -

Effect of the dynamic ergodic divertor in the TEXTOR tokamak on MHD stability, plasma rotation and transport

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