Fast-ion redistribution due to sawtooth crash in the TEXTOR tokamak measured by collective Thomson scattering

Stefan Kragh Nielsen; Henrik Bindslev; Mirko Salewski; A. Bürger; E. Delabie; Vedran Furtula; M. Kantor; Søren Bang Korsholm; Frank Leipold; Fernando Meo; Poul Michelsen; Dmitry Moseev; J.W. Oosterbeek; Morten Stejner Pedersen; E. Westerhof; P. Woskov

doi:10.1088/0741-3335/52/9/092001

Fast-ion redistribution due to sawtooth crash in the TEXTOR tokamak measured by collective Thomson scattering

Stefan Kragh Nielsen, Henrik Bindslev, Mirko Salewski, A. Bürger, E. Delabie, Vedran Furtula, M. Kantor, Søren Bang Korsholm, Frank Leipold, Fernando Meo, Poul Michelsen, Dmitry Moseev, J.W. Oosterbeek, Morten Stejner Pedersen, E. Westerhof, P. Woskov

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Abstract

Here we present collective Thomson scattering measurements of 1D fast-ion velocity distribution functions in neutral beam heated TEXTOR plasmas with sawtooth oscillations. Up to 50% of the fast ions in the centre are redistributed as a consequence of a sawtooth crash. We resolve various directions to the magnetic field. The fast-ion distribution is found to be anisotropic as expected. For a resolved angle of 39° to the magnetic field we find a drop in the fast-ion distribution of 20–40%. For a resolved angle of 83° to the magnetic field the drop is no larger than 20%.

Original language	English
Journal	Plasma Physics and Controlled Fusion
Volume	52
Issue number	9
Pages (from-to)	092001
ISSN	0741-3335
DOIs	https://doi.org/10.1088/0741-3335/52/9/092001
Publication status	Published - 2010

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Fusion energy

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Nielsen, S. K., Bindslev, H., Salewski, M., Bürger, A., Delabie, E., Furtula, V., Kantor, M., Korsholm, S. B., Leipold, F., Meo, F., Michelsen, P., Moseev, D., Oosterbeek, J. W., Stejner Pedersen, M., Westerhof, E., & Woskov, P. (2010). Fast-ion redistribution due to sawtooth crash in the TEXTOR tokamak measured by collective Thomson scattering. Plasma Physics and Controlled Fusion, 52(9), 092001. https://doi.org/10.1088/0741-3335/52/9/092001

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title = "Fast-ion redistribution due to sawtooth crash in the TEXTOR tokamak measured by collective Thomson scattering",

abstract = "Here we present collective Thomson scattering measurements of 1D fast-ion velocity distribution functions in neutral beam heated TEXTOR plasmas with sawtooth oscillations. Up to 50% of the fast ions in the centre are redistributed as a consequence of a sawtooth crash. We resolve various directions to the magnetic field. The fast-ion distribution is found to be anisotropic as expected. For a resolved angle of 39° to the magnetic field we find a drop in the fast-ion distribution of 20–40%. For a resolved angle of 83° to the magnetic field the drop is no larger than 20%.",

keywords = "Fusion energy, Fusionsenergiforskning, Fusionsenergi",

author = "Nielsen, {Stefan Kragh} and Henrik Bindslev and Mirko Salewski and A. B{\"u}rger and E. Delabie and Vedran Furtula and M. Kantor and Korsholm, {S{\o}ren Bang} and Frank Leipold and Fernando Meo and Poul Michelsen and Dmitry Moseev and J.W. Oosterbeek and {Stejner Pedersen}, Morten and E. Westerhof and P. Woskov",

year = "2010",

doi = "10.1088/0741-3335/52/9/092001",

language = "English",

volume = "52",

pages = "092001",

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Nielsen, SK, Bindslev, H, Salewski, M, Bürger, A, Delabie, E, Furtula, V, Kantor, M, Korsholm, SB, Leipold, F, Meo, F, Michelsen, P, Moseev, D, Oosterbeek, JW, Stejner Pedersen, M, Westerhof, E & Woskov, P 2010, 'Fast-ion redistribution due to sawtooth crash in the TEXTOR tokamak measured by collective Thomson scattering', Plasma Physics and Controlled Fusion, vol. 52, no. 9, pp. 092001. https://doi.org/10.1088/0741-3335/52/9/092001

TY - JOUR

T1 - Fast-ion redistribution due to sawtooth crash in the TEXTOR tokamak measured by collective Thomson scattering

AU - Nielsen, Stefan Kragh

AU - Bindslev, Henrik

AU - Salewski, Mirko

AU - Bürger, A.

AU - Delabie, E.

AU - Furtula, Vedran

AU - Kantor, M.

AU - Korsholm, Søren Bang

AU - Leipold, Frank

AU - Meo, Fernando

AU - Michelsen, Poul

AU - Moseev, Dmitry

AU - Oosterbeek, J.W.

AU - Stejner Pedersen, Morten

AU - Westerhof, E.

AU - Woskov, P.

PY - 2010

Y1 - 2010

N2 - Here we present collective Thomson scattering measurements of 1D fast-ion velocity distribution functions in neutral beam heated TEXTOR plasmas with sawtooth oscillations. Up to 50% of the fast ions in the centre are redistributed as a consequence of a sawtooth crash. We resolve various directions to the magnetic field. The fast-ion distribution is found to be anisotropic as expected. For a resolved angle of 39° to the magnetic field we find a drop in the fast-ion distribution of 20–40%. For a resolved angle of 83° to the magnetic field the drop is no larger than 20%.

AB - Here we present collective Thomson scattering measurements of 1D fast-ion velocity distribution functions in neutral beam heated TEXTOR plasmas with sawtooth oscillations. Up to 50% of the fast ions in the centre are redistributed as a consequence of a sawtooth crash. We resolve various directions to the magnetic field. The fast-ion distribution is found to be anisotropic as expected. For a resolved angle of 39° to the magnetic field we find a drop in the fast-ion distribution of 20–40%. For a resolved angle of 83° to the magnetic field the drop is no larger than 20%.

KW - Fusion energy

KW - Fusionsenergiforskning

KW - Fusionsenergi

U2 - 10.1088/0741-3335/52/9/092001

DO - 10.1088/0741-3335/52/9/092001

M3 - Journal article

SN - 0741-3335

VL - 52

SP - 092001

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 9

ER -

Fast-ion redistribution due to sawtooth crash in the TEXTOR tokamak measured by collective Thomson scattering

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