Characterization of the Li-BES at ASDEX Upgrade

M. Willensdorfer, G. Birkenmeier, R. Fischer, F. M. Laggner, E. Wolfrum, G. Veres, F. Aumayr, D. Carralero, L. Guimarãis, B. Kurzan

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

The lithium beam emission spectroscopy (Li-BES) is a powerful diagnostic to resolve the plasma edge density with high temporal and spatial resolution. The recent upgrades of the Li-BES at ASDEX Upgrade and the resulting gain in photon flux allow the plasma edge density to be determined with an advanced level of accuracy. Furthermore, electron density fluctuations are measured using Li-BES. The Li-BES capabilities and limitations to measure electron density profiles as well as density fluctuations are presented. It is well suited to characterize electron density turbulence in the scrape off layer (SOL) with decreasing sensitivity towards the plasma core. This is demonstrated by simulations as well as by comparisons with other diagnostics. The Li-BES is an appropriate tool to study transport phenomena in the SOL over a wide range of plasma parameters due to its robustness and routine usage.

Original languageEnglish
Article number025008
JournalPlasma Physics and Controlled Fusion
Volume56
Issue number2
DOIs
Publication statusPublished - Feb 2014

Fingerprint

Emission spectroscopy
Lithium
lithium
Carrier concentration
Plasmas
spectroscopy
electron density profiles
temporal resolution
Turbulence
Photons
spatial resolution
turbulence
Fluxes
sensitivity
high resolution
photons
simulation

Keywords

  • ASDEX Upgrade
  • diagnostics
  • electron density profiles
  • lithium beam
  • tokamak

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Nuclear Energy and Engineering

Cite this

Willensdorfer, M., Birkenmeier, G., Fischer, R., Laggner, F. M., Wolfrum, E., Veres, G., ... Kurzan, B. (2014). Characterization of the Li-BES at ASDEX Upgrade. Plasma Physics and Controlled Fusion, 56(2), [025008]. https://doi.org/10.1088/0741-3335/56/2/025008

Characterization of the Li-BES at ASDEX Upgrade. / Willensdorfer, M.; Birkenmeier, G.; Fischer, R.; Laggner, F. M.; Wolfrum, E.; Veres, G.; Aumayr, F.; Carralero, D.; Guimarãis, L.; Kurzan, B.

In: Plasma Physics and Controlled Fusion, Vol. 56, No. 2, 025008, 02.2014.

Research output: Contribution to journalArticle

Willensdorfer, M, Birkenmeier, G, Fischer, R, Laggner, FM, Wolfrum, E, Veres, G, Aumayr, F, Carralero, D, Guimarãis, L & Kurzan, B 2014, 'Characterization of the Li-BES at ASDEX Upgrade', Plasma Physics and Controlled Fusion, vol. 56, no. 2, 025008. https://doi.org/10.1088/0741-3335/56/2/025008
Willensdorfer M, Birkenmeier G, Fischer R, Laggner FM, Wolfrum E, Veres G et al. Characterization of the Li-BES at ASDEX Upgrade. Plasma Physics and Controlled Fusion. 2014 Feb;56(2). 025008. https://doi.org/10.1088/0741-3335/56/2/025008
Willensdorfer, M. ; Birkenmeier, G. ; Fischer, R. ; Laggner, F. M. ; Wolfrum, E. ; Veres, G. ; Aumayr, F. ; Carralero, D. ; Guimarãis, L. ; Kurzan, B. / Characterization of the Li-BES at ASDEX Upgrade. In: Plasma Physics and Controlled Fusion. 2014 ; Vol. 56, No. 2.
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