Main results of the first experimental campaign in the stellarator W7-X

W7-X Team

Main results of the first experimental campaign in the stellarator W7-X

W7-X Team

Fusion Engineering

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1 Scopus citations

Abstract

A summary of the first operational phase (OP1.1) at the stellarator W7-X is given. The operational setup of heating and diagnostics as well the results of experiments are briefly described. Plasma parameters and confinement are better than expected: T_e > 8 keV and T_i > 2 keV at n_e ≈ 3×10¹⁹ m^-3 yielding β₀ ≈ 2.5 %. The results for ECR heating with X2-mode as well the ECCD are in good agreement with the theory predictions. The heating scenario with the O2-mode alone was successfully first time performed. Stellarator specific regime of core “electron root” confinement was obtained.

Original language	English
Pages (from-to)	3-8
Number of pages	6
Journal	Problems of Atomic Science and Technology
Volume	106
Issue number	6
State	Published - 2016

Funding

This work has been carried out within the frame-work of the EUROfusion Consortium and has received funding from the Euratom research and training prog-ramme 2014-2018 under grant agreement No 633053. The views and opinions expressed herein do not nece-ssarily reflect those of the European Commission.

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@article{8d16d741dcf64526a09f495e39d1bcaa,

title = "Main results of the first experimental campaign in the stellarator W7-X",

abstract = "A summary of the first operational phase (OP1.1) at the stellarator W7-X is given. The operational setup of heating and diagnostics as well the results of experiments are briefly described. Plasma parameters and confinement are better than expected: Te > 8 keV and Ti > 2 keV at ne ≈ 3{\texttimes}1019 m-3 yielding β0 ≈ 2.5 \%. The results for ECR heating with X2-mode as well the ECCD are in good agreement with the theory predictions. The heating scenario with the O2-mode alone was successfully first time performed. Stellarator specific regime of core {\textquotedblleft}electron root{\textquotedblright} confinement was obtained.",

author = "\{W7-X Team\} and Marushchenko, \{N. B.\} and A. Dinklage and A. Alonso and J. Baldzuhn and Beidler, \{C. D.\} and C. Biedermann and B. Blackwell and S. Bozhenkov and R. Brakel and B. Buttensch{\"o}n and Y. Feng and G. Fuchert and J. Geiger and M. Hirsch and U. Hoefel and J. Knauer and A. Kr{\"a}mer-Flecken and A. Langenberg and Laqua, \{H. P.\} and M. Landreman and H. Maassberg and Pablant, \{N. A.\} and E. Pasch and K. Rahbarnia and L. Rudischhauser and T. Stange and L. Stephey and H. Trimino-Mora and Yu Turkin and Velasco, \{J. L.\} and G. Wurden and D. Zhang and T. Andreeva and M. Beurskens and E. Blanco and Bosch, \{H. S.\} and R. Burhenn and A. Cappa and A. Czarnecka and M. Dostal and P. Drews and M. Endler and T. Estrada and T. Fornal and O. Grulke and D. Hartmann and Harris, \{J. H.\} and P. Helander and M. Jakubowski and T. Klinger",

year = "2016",

language = "English",

volume = "106",

pages = "3--8",

journal = "Problems of Atomic Science and Technology",

issn = "1682-9344",

number = "6",

}

TY - JOUR

T1 - Main results of the first experimental campaign in the stellarator W7-X

AU - W7-X Team

AU - Marushchenko, N. B.

AU - Dinklage, A.

AU - Alonso, A.

AU - Baldzuhn, J.

AU - Beidler, C. D.

AU - Biedermann, C.

AU - Blackwell, B.

AU - Bozhenkov, S.

AU - Brakel, R.

AU - Buttenschön, B.

AU - Feng, Y.

AU - Fuchert, G.

AU - Geiger, J.

AU - Hirsch, M.

AU - Hoefel, U.

AU - Knauer, J.

AU - Krämer-Flecken, A.

AU - Langenberg, A.

AU - Laqua, H. P.

AU - Landreman, M.

AU - Maassberg, H.

AU - Pablant, N. A.

AU - Pasch, E.

AU - Rahbarnia, K.

AU - Rudischhauser, L.

AU - Stange, T.

AU - Stephey, L.

AU - Trimino-Mora, H.

AU - Turkin, Yu

AU - Velasco, J. L.

AU - Wurden, G.

AU - Zhang, D.

AU - Andreeva, T.

AU - Beurskens, M.

AU - Blanco, E.

AU - Bosch, H. S.

AU - Burhenn, R.

AU - Cappa, A.

AU - Czarnecka, A.

AU - Dostal, M.

AU - Drews, P.

AU - Endler, M.

AU - Estrada, T.

AU - Fornal, T.

AU - Grulke, O.

AU - Hartmann, D.

AU - Harris, J. H.

AU - Helander, P.

AU - Jakubowski, M.

AU - Klinger, T.

PY - 2016

Y1 - 2016

N2 - A summary of the first operational phase (OP1.1) at the stellarator W7-X is given. The operational setup of heating and diagnostics as well the results of experiments are briefly described. Plasma parameters and confinement are better than expected: Te > 8 keV and Ti > 2 keV at ne ≈ 3×1019 m-3 yielding β0 ≈ 2.5 %. The results for ECR heating with X2-mode as well the ECCD are in good agreement with the theory predictions. The heating scenario with the O2-mode alone was successfully first time performed. Stellarator specific regime of core “electron root” confinement was obtained.

AB - A summary of the first operational phase (OP1.1) at the stellarator W7-X is given. The operational setup of heating and diagnostics as well the results of experiments are briefly described. Plasma parameters and confinement are better than expected: Te > 8 keV and Ti > 2 keV at ne ≈ 3×1019 m-3 yielding β0 ≈ 2.5 %. The results for ECR heating with X2-mode as well the ECCD are in good agreement with the theory predictions. The heating scenario with the O2-mode alone was successfully first time performed. Stellarator specific regime of core “electron root” confinement was obtained.

UR - https://www.scopus.com/pages/publications/85007618587

M3 - Article

AN - SCOPUS:85007618587

SN - 1682-9344

VL - 106

SP - 3

EP - 8

JO - Problems of Atomic Science and Technology

JF - Problems of Atomic Science and Technology

IS - 6

ER -

Main results of the first experimental campaign in the stellarator W7-X

Abstract

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