Gamma-ray spectroscopy measurements of confined fast ions on ASDEX Upgrade

M. Nocente, M. Garcia-Munoz, G. Gorini, M. Tardocchi, A. Weller, S. Akaslompolo, R. Bilato, V. Bobkov, C. Cazzaniga, B. Geiger, G. Grosso, A. Herrmann, V. Kiptily, M. Maraschek, R. McDermott, J.M. Noterdaeme, Y. Podoba, G. Tardini

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Abstract

Evidence of γ-ray emission from fast ions in ASDEX Upgrade (AUG) is presented. The plasma scenarios developed for the experiments involve deuteron or proton acceleration. The observed γ-ray emission level induced by energetic protons is used to determine the effective tail temperature of the proton distribution function that can be compared with neutral particle analyser measurements. More generally the measured emission rate is used to assess the confinement of protons with energies <400keV in discharges affected by toroidal Alfvén eigenmode instabilities. The derived information on confined ions is combined with observations made with the AUG fast ion loss detector. © 2012 IAEA, Vienna.
Original languageEnglish
Article number094021
Pages (from-to)-
JournalNuclear Fusion
Volume52
Issue number9
DOIs
Publication statusPublished - 2012
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Nocente, M., Garcia-Munoz, M., Gorini, G., Tardocchi, M., Weller, A., Akaslompolo, S., ... Tardini, G. (2012). Gamma-ray spectroscopy measurements of confined fast ions on ASDEX Upgrade. Nuclear Fusion, 52(9), -. [094021]. https://doi.org/10.1088/0029-5515/52/9/094021