Millimeter-wave beam scattering and induced broadening by plasma turbulence in the TCV tokamak

The TCV Teama

doi:10.1088/1741-4326/abf43f

Millimeter-wave beam scattering and induced broadening by plasma turbulence in the TCV tokamak

The TCV Teama

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

Abstract

The scattering of millimeter-wave beams from electron density fluctuations and the associated beam broadening are experimentally demonstrated. Using a dedicated setup, instantaneous deflection and (de-)focusing of the beam due to density blobs on the beam path are shown to agree with full-wave simulations. The detected time-averaged wave power transmitted through the turbulent plasma is reproduced by the radiative-transfer model implemented in the WKBeam code, which predicts a ∼50% turbulence-induced broadening of the beam cross-section. The role of core turbulence for the considered geometry is highlighted.

Original language	English
Article number	066011
Journal	Nuclear Fusion
Volume	61
Issue number	6
DOIs	https://doi.org/10.1088/1741-4326/abf43f
Publication status	Published - 1 Jun 2021

Keywords

ITER
Langmuir probes
electron-cyclotron resonant heating
full-wave simulations
millimeter-wave beam
millimeter-wave scattering
plasma turbulence

Access to Document

10.1088/1741-4326/abf43f

Cite this

@article{a60c168c1cdf4cebb37cdee70dfa424d,

title = "Millimeter-wave beam scattering and induced broadening by plasma turbulence in the TCV tokamak",

abstract = "The scattering of millimeter-wave beams from electron density fluctuations and the associated beam broadening are experimentally demonstrated. Using a dedicated setup, instantaneous deflection and (de-)focusing of the beam due to density blobs on the beam path are shown to agree with full-wave simulations. The detected time-averaged wave power transmitted through the turbulent plasma is reproduced by the radiative-transfer model implemented in the WKBeam code, which predicts a ∼50\% turbulence-induced broadening of the beam cross-section. The role of core turbulence for the considered geometry is highlighted.",

keywords = "ITER, Langmuir probes, electron-cyclotron resonant heating, full-wave simulations, millimeter-wave beam, millimeter-wave scattering, plasma turbulence",

author = "\{The TCV Teama\} and O. Chella{\"i} and S. Alberti and I. Furno and Goodman, \{T. P.\} and O. Maj and G. Merlo and E. Poli and P. Ricci and F. Riva and H. Weber and S. Coda and M. Agostini and R. Albanese and E. Alessi and S. Allan and J. Allcock and R. Ambrosino and H. Anand and Y. Andr{\`e}be and H. Arnichand and F. Auriemma and Ayllon-Guerola, \{J. M.\} and F. Bagnato and J. Ball and M. Baquero-Ruiz and Beletskii, \{A. A.\} and M. Bernert and W. Bin and P. Blanchard and Blanken, \{T. C.\} and Boedo, \{J. A.\} and O. Bogar and T. Bolzonella and F. Bombarda and N. Bonanomi and F. Bouquey and C. Bowman and D. Brida and J. Bucalossi and J. Buermans and H. Bufferand and P. Buratti and G. Calabr{\'o} and L. Calacci and Y. Camenen and D. Carnevale and F. Carpanese and M. Carr and P. Hennequin and L. Vermare",

note = "Publisher Copyright: {\textcopyright} EURATOM 2021.",

year = "2021",

month = jun,

day = "1",

doi = "10.1088/1741-4326/abf43f",

language = "English",

volume = "61",

journal = "Nuclear Fusion",

issn = "0029-5515",

number = "6",

}

TY - JOUR

T1 - Millimeter-wave beam scattering and induced broadening by plasma turbulence in the TCV tokamak

AU - The TCV Teama

AU - Chellaï, O.

AU - Alberti, S.

AU - Furno, I.

AU - Goodman, T. P.

AU - Maj, O.

AU - Merlo, G.

AU - Poli, E.

AU - Ricci, P.

AU - Riva, F.

AU - Weber, H.

AU - Coda, S.

AU - Agostini, M.

AU - Albanese, R.

AU - Alessi, E.

AU - Allan, S.

AU - Allcock, J.

AU - Ambrosino, R.

AU - Anand, H.

AU - Andrèbe, Y.

AU - Arnichand, H.

AU - Auriemma, F.

AU - Ayllon-Guerola, J. M.

AU - Bagnato, F.

AU - Ball, J.

AU - Baquero-Ruiz, M.

AU - Beletskii, A. A.

AU - Bernert, M.

AU - Bin, W.

AU - Blanchard, P.

AU - Blanken, T. C.

AU - Boedo, J. A.

AU - Bogar, O.

AU - Bolzonella, T.

AU - Bombarda, F.

AU - Bonanomi, N.

AU - Bouquey, F.

AU - Bowman, C.

AU - Brida, D.

AU - Bucalossi, J.

AU - Buermans, J.

AU - Bufferand, H.

AU - Buratti, P.

AU - Calabró, G.

AU - Calacci, L.

AU - Camenen, Y.

AU - Carnevale, D.

AU - Carpanese, F.

AU - Carr, M.

AU - Hennequin, P.

AU - Vermare, L.

PY - 2021/6/1

Y1 - 2021/6/1

N2 - The scattering of millimeter-wave beams from electron density fluctuations and the associated beam broadening are experimentally demonstrated. Using a dedicated setup, instantaneous deflection and (de-)focusing of the beam due to density blobs on the beam path are shown to agree with full-wave simulations. The detected time-averaged wave power transmitted through the turbulent plasma is reproduced by the radiative-transfer model implemented in the WKBeam code, which predicts a ∼50% turbulence-induced broadening of the beam cross-section. The role of core turbulence for the considered geometry is highlighted.

AB - The scattering of millimeter-wave beams from electron density fluctuations and the associated beam broadening are experimentally demonstrated. Using a dedicated setup, instantaneous deflection and (de-)focusing of the beam due to density blobs on the beam path are shown to agree with full-wave simulations. The detected time-averaged wave power transmitted through the turbulent plasma is reproduced by the radiative-transfer model implemented in the WKBeam code, which predicts a ∼50% turbulence-induced broadening of the beam cross-section. The role of core turbulence for the considered geometry is highlighted.

KW - ITER

KW - Langmuir probes

KW - electron-cyclotron resonant heating

KW - full-wave simulations

KW - millimeter-wave beam

KW - millimeter-wave scattering

KW - plasma turbulence

UR - https://www.scopus.com/pages/publications/85105972776

U2 - 10.1088/1741-4326/abf43f

DO - 10.1088/1741-4326/abf43f

M3 - Article

AN - SCOPUS:85105972776

SN - 0029-5515

VL - 61

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 6

M1 - 066011

ER -

Millimeter-wave beam scattering and induced broadening by plasma turbulence in the TCV tokamak

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this