Experimental investigation of the tilt angle of turbulent structures in the core of fusion plasmas

J. R. Pinzón; T. Happel; P. Hennequin; C. Angioni; T. Estrada; A. Lebschy; U. Stroth

doi:10.1088/1741-4326/ab227e

Experimental investigation of the tilt angle of turbulent structures in the core of fusion plasmas

J. R. Pinzón
, T. Happel
, P. Hennequin
, C. Angioni
, T. Estrada
, A. Lebschy
, U. Stroth

Chair of Plasmarand- und Divertorphysik

Max Planck Institute for Plasma Physics
Technical University of Munich
CNRS
Laboratorio Nacional de Fusion, CIEMAT

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

13 Scopus citations

Abstract

The tilt angle of turbulent structures stands for the anisotropy of turbulence which is essential for understanding the dynamics of magnetized plasmas. It is a quantity predicted by theory and simulations, that provides information on the interplay between turbulence, micro-instabilities and plasma flows. A new method for measuring the tilt angle of turbulent structures in the core region of fusion plasmas using Doppler reflectometry is presented. First measurements of this type on the ASDEX Upgrade tokamak have shown a significant difference of tilt angle for different plasma conditions. The dominance of sheared E -B flows in determining the structure tilt is experimentally demonstrated for different turbulence regimes.

Original language	English
Article number	074002
Journal	Nuclear Fusion
Volume	59
Issue number	7
DOIs	https://doi.org/10.1088/1741-4326/ab227e
State	Published - 5 Jun 2019

Keywords

Microinstabilities
Plasma diagnostics
Plasma turbulence
Sheared flow

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title = "Experimental investigation of the tilt angle of turbulent structures in the core of fusion plasmas",

abstract = "The tilt angle of turbulent structures stands for the anisotropy of turbulence which is essential for understanding the dynamics of magnetized plasmas. It is a quantity predicted by theory and simulations, that provides information on the interplay between turbulence, micro-instabilities and plasma flows. A new method for measuring the tilt angle of turbulent structures in the core region of fusion plasmas using Doppler reflectometry is presented. First measurements of this type on the ASDEX Upgrade tokamak have shown a significant difference of tilt angle for different plasma conditions. The dominance of sheared E -B flows in determining the structure tilt is experimentally demonstrated for different turbulence regimes.",

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AU - Pinzón, J. R.

AU - Happel, T.

AU - Hennequin, P.

AU - Angioni, C.

AU - Estrada, T.

AU - Lebschy, A.

AU - Stroth, U.

N1 - Publisher Copyright: © EURATOM 2019 Printed in the UK.

PY - 2019/6/5

Y1 - 2019/6/5

N2 - The tilt angle of turbulent structures stands for the anisotropy of turbulence which is essential for understanding the dynamics of magnetized plasmas. It is a quantity predicted by theory and simulations, that provides information on the interplay between turbulence, micro-instabilities and plasma flows. A new method for measuring the tilt angle of turbulent structures in the core region of fusion plasmas using Doppler reflectometry is presented. First measurements of this type on the ASDEX Upgrade tokamak have shown a significant difference of tilt angle for different plasma conditions. The dominance of sheared E -B flows in determining the structure tilt is experimentally demonstrated for different turbulence regimes.

AB - The tilt angle of turbulent structures stands for the anisotropy of turbulence which is essential for understanding the dynamics of magnetized plasmas. It is a quantity predicted by theory and simulations, that provides information on the interplay between turbulence, micro-instabilities and plasma flows. A new method for measuring the tilt angle of turbulent structures in the core region of fusion plasmas using Doppler reflectometry is presented. First measurements of this type on the ASDEX Upgrade tokamak have shown a significant difference of tilt angle for different plasma conditions. The dominance of sheared E -B flows in determining the structure tilt is experimentally demonstrated for different turbulence regimes.

KW - Microinstabilities

KW - Plasma diagnostics

KW - Plasma turbulence

KW - Sheared flow

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DO - 10.1088/1741-4326/ab227e

M3 - Article

AN - SCOPUS:85069056465

SN - 0029-5515

VL - 59

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 7

M1 - 074002

ER -

Experimental investigation of the tilt angle of turbulent structures in the core of fusion plasmas

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Keywords

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