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Deuterium beam acceleration with 3rd harmonic ion cyclotron resonance heating in Joint European Torus: Sawtooth stabilization and Alfven eigenmodes
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2012 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 19, no 3, 032115- p.Article in journal (Refereed) Published
Abstract [en]

Experiments on accelerating NBI-produced deuterium (D) beam ions from their injection energy of similar to 110 keV up to the MeV energy range with 3rd harmonic ion cyclotron resonance heating were performed on the Joint European Torus [P. H. Rebut and B. E. Keen, Fusion Technol. 11, 13 (1987)]. A renewed set of nuclear diagnostics was used for analysing fast D ions during sawtooth stabilization, monster sawtooth crashes, and during excitation of Alfven eigenmodes (AEs) residing inside the q = 1 radius. The measurements and modeling of the fast ions with the nonlinear HAGIS code [S. D. Pinches et al., Comput. Phys. Commun. 111, 133 (1998)] show that monster sawtooth crashes are strongly facilitated by the AE-induced re-distribution of the fast D ions from inside the q = 1 radius to the plasma edge. [http://dx.doi.org/10.1063/1.3696858]

Place, publisher, year, edition, pages
2012. Vol. 19, no 3, 032115- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-174591DOI: 10.1063/1.3696858ISI: 000302226500022OAI: oai:DiVA.org:uu-174591DiVA: diva2:529183
Available from: 2012-05-29 Created: 2012-05-22 Last updated: 2017-12-07Bibliographically approved

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Hellesen, CarlEriksson, Jacob

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