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Modelling third harmonic ion cyclotron acceleration of deuterium beams for JET fusion product studies experiments
KTH.
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2016 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 56, no 11, article id 112022Article in journal (Refereed) Published
Abstract [en]

Recent JET experiments have been dedicated to the studies of fusion reactions between deuterium (D) and Helium-3 (He-3) ions using neutral beam injection (NBI) in synergy with third harmonic ion cyclotron radio-frequency heating (ICRH) of the beam. This scenario generates a fast ion deuterium tail enhancing DD and (DHe)-He-3 fusion reactions. Modelling and measuring the fast deuterium tail accurately is essential for quantifying the fusion products. This paper presents the modelling of the D distribution function resulting from the NBI+ICRF heating scheme, reinforced by a comparison with dedicated JET fast ion diagnostics, showing an overall good agreement. Finally, a sawtooth activity for these experiments has been observed and interpreted using SPOT/RFOF simulations in the framework of Porcelli's theoretical model, where NBI+ICRH accelerated ions are found to have a strong stabilizing effect, leading to monster sawteeth.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2016. Vol. 56, no 11, article id 112022
Keywords [en]
tokamak, fast ions, integrated modelling, ICRH, synthetic diagnostics, neutron spectroscopy, gamma spectroscopy
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-200768DOI: 10.1088/0029-5515/56/11/112022ISI: 000391393900022Scopus ID: 2-s2.0-84993661856OAI: oai:DiVA.org:kth-200768DiVA, id: diva2:1071894
Conference
14th IAEA Technical Meeting on Energetic Particles in Magnetic Confinement Systems, 2015, Vienna, AUSTRIA
Note

QC 20170206

Available from: 2017-02-06 Created: 2017-02-02 Last updated: 2017-11-29Bibliographically approved

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CiteExportLink to record
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  • apa
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