The influence of resonant magnetic perturbations on edge transport in limiter H-mode plasmas in TEXTOR

B. Unterberg; S. S. Abdullaev; J. W. Coenen; K. H. Finken; H. Frerichs; M. W. Jakubowski; D. Kalupin; M. Yu Kantor; A. Krämer-Flecken; M. Lehnen; Y. Liang; U. Samm; O. Schmitz; S. Soldatov; G. W. Spakman; H. Stoschus; M. Z. Tokar; G. van Wassenhove; Y. Xu; O. Zimmermann

doi:10.1016/j.jnucmat.2009.01.305

The influence of resonant magnetic perturbations on edge transport in limiter H-mode plasmas in TEXTOR

B. Unterberg, S. S. Abdullaev, J. W. Coenen, K. H. Finken, H. Frerichs, M. W. Jakubowski, D. Kalupin, M. Yu Kantor, A. Krämer-Flecken, M. Lehnen, Y. Liang, U. Samm, O. Schmitz, S. Soldatov, G. W. Spakman, H. Stoschus, M. Z. Tokar, G. van Wassenhove, Y. Xu, O. Zimmermann

Laboratory for Plasma Physics

Research output: Contribution to journal › Article › peer-review

Abstract

In this contribution, we report on experimental results on edge transport in limiter H-mode plasmas in TEXTOR under the influence of the Dynamic Ergodic Divertor (DED). These plasmas are characterized by a pedestal structure mainly visible in the electron density, resulting in increased electron pressure gradients of up to 30 kPa/m over a pedestal width of 25 mm at high pedestal collisionalities (ν_e* = 1 - 10), and with high frequency ELMs in the range of 300-1500 Hz. Under the influence of DED the pedestal pressure is gradually reduced and completely collapses to L-mode when the laminar zone extends all the way across the pedestal width. Toroidal plasma rotation is maintained at H-mode levels by the torque introduced by DED in the stochastic region. The perturbed magnetic topology has been optimized to access conditions with a density pump-out which are strongly governed by wall pumping capabilities in TEXTOR.

Original language	English
Pages (from-to)	351-354
Number of pages	4
Journal	Journal of Nuclear Materials
Volume	390-391
Issue number	1
DOIs	https://doi.org/10.1016/j.jnucmat.2009.01.305
Publication status	Published - 15 Jun 2009

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Unterberg, B., Abdullaev, S. S., Coenen, J. W., Finken, K. H., Frerichs, H., Jakubowski, M. W., Kalupin, D., Kantor, M. Y., Krämer-Flecken, A., Lehnen, M., Liang, Y., Samm, U., Schmitz, O., Soldatov, S., Spakman, G. W., Stoschus, H., Tokar, M. Z., van Wassenhove, G., Xu, Y., & Zimmermann, O. (2009). The influence of resonant magnetic perturbations on edge transport in limiter H-mode plasmas in TEXTOR. Journal of Nuclear Materials, 390-391(1), 351-354. https://doi.org/10.1016/j.jnucmat.2009.01.305

@article{74dd19503d2443489978f4955af97ac2,

title = "The influence of resonant magnetic perturbations on edge transport in limiter H-mode plasmas in TEXTOR",

abstract = "In this contribution, we report on experimental results on edge transport in limiter H-mode plasmas in TEXTOR under the influence of the Dynamic Ergodic Divertor (DED). These plasmas are characterized by a pedestal structure mainly visible in the electron density, resulting in increased electron pressure gradients of up to 30 kPa/m over a pedestal width of 25 mm at high pedestal collisionalities (νe* = 1 - 10), and with high frequency ELMs in the range of 300-1500 Hz. Under the influence of DED the pedestal pressure is gradually reduced and completely collapses to L-mode when the laminar zone extends all the way across the pedestal width. Toroidal plasma rotation is maintained at H-mode levels by the torque introduced by DED in the stochastic region. The perturbed magnetic topology has been optimized to access conditions with a density pump-out which are strongly governed by wall pumping capabilities in TEXTOR.",

author = "B. Unterberg and Abdullaev, {S. S.} and Coenen, {J. W.} and Finken, {K. H.} and H. Frerichs and Jakubowski, {M. W.} and D. Kalupin and Kantor, {M. Yu} and A. Kr{\"a}mer-Flecken and M. Lehnen and Y. Liang and U. Samm and O. Schmitz and S. Soldatov and Spakman, {G. W.} and H. Stoschus and Tokar, {M. Z.} and {van Wassenhove}, G. and Y. Xu and O. Zimmermann",

year = "2009",

month = jun,

day = "15",

doi = "10.1016/j.jnucmat.2009.01.305",

language = "English",

volume = "390-391",

pages = "351--354",

journal = "Journal of Nuclear Materials",

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Unterberg, B, Abdullaev, SS, Coenen, JW, Finken, KH, Frerichs, H, Jakubowski, MW, Kalupin, D, Kantor, MY, Krämer-Flecken, A, Lehnen, M, Liang, Y, Samm, U, Schmitz, O, Soldatov, S, Spakman, GW, Stoschus, H, Tokar, MZ, van Wassenhove, G, Xu, Y & Zimmermann, O 2009, 'The influence of resonant magnetic perturbations on edge transport in limiter H-mode plasmas in TEXTOR', Journal of Nuclear Materials, vol. 390-391, no. 1, pp. 351-354. https://doi.org/10.1016/j.jnucmat.2009.01.305

TY - JOUR

T1 - The influence of resonant magnetic perturbations on edge transport in limiter H-mode plasmas in TEXTOR

AU - Unterberg, B.

AU - Abdullaev, S. S.

AU - Coenen, J. W.

AU - Finken, K. H.

AU - Frerichs, H.

AU - Jakubowski, M. W.

AU - Kalupin, D.

AU - Kantor, M. Yu

AU - Krämer-Flecken, A.

AU - Lehnen, M.

AU - Liang, Y.

AU - Samm, U.

AU - Schmitz, O.

AU - Soldatov, S.

AU - Spakman, G. W.

AU - Stoschus, H.

AU - Tokar, M. Z.

AU - van Wassenhove, G.

AU - Xu, Y.

AU - Zimmermann, O.

PY - 2009/6/15

Y1 - 2009/6/15

N2 - In this contribution, we report on experimental results on edge transport in limiter H-mode plasmas in TEXTOR under the influence of the Dynamic Ergodic Divertor (DED). These plasmas are characterized by a pedestal structure mainly visible in the electron density, resulting in increased electron pressure gradients of up to 30 kPa/m over a pedestal width of 25 mm at high pedestal collisionalities (νe* = 1 - 10), and with high frequency ELMs in the range of 300-1500 Hz. Under the influence of DED the pedestal pressure is gradually reduced and completely collapses to L-mode when the laminar zone extends all the way across the pedestal width. Toroidal plasma rotation is maintained at H-mode levels by the torque introduced by DED in the stochastic region. The perturbed magnetic topology has been optimized to access conditions with a density pump-out which are strongly governed by wall pumping capabilities in TEXTOR.

AB - In this contribution, we report on experimental results on edge transport in limiter H-mode plasmas in TEXTOR under the influence of the Dynamic Ergodic Divertor (DED). These plasmas are characterized by a pedestal structure mainly visible in the electron density, resulting in increased electron pressure gradients of up to 30 kPa/m over a pedestal width of 25 mm at high pedestal collisionalities (νe* = 1 - 10), and with high frequency ELMs in the range of 300-1500 Hz. Under the influence of DED the pedestal pressure is gradually reduced and completely collapses to L-mode when the laminar zone extends all the way across the pedestal width. Toroidal plasma rotation is maintained at H-mode levels by the torque introduced by DED in the stochastic region. The perturbed magnetic topology has been optimized to access conditions with a density pump-out which are strongly governed by wall pumping capabilities in TEXTOR.

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DO - 10.1016/j.jnucmat.2009.01.305

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SN - 0022-3115

VL - 390-391

SP - 351

EP - 354

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1

ER -

The influence of resonant magnetic perturbations on edge transport in limiter H-mode plasmas in TEXTOR

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