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RF Heating for Fusion Product Studies
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.ORCID iD: 0000-0002-7142-7103
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2015 (English)In: RADIOFREQUENCY POWER IN PLASMAS, 2015, UNSP 060007Conference paper (Refereed)Text
Abstract [en]

Third harmonic cyclotron heating is an effective tool for accelerating deuterium (D) beams to the MeV energy range, suitable for studying ITER relevant fast particle physics in plasmas without significant tritium content. Such experiments were recently conducted in JET with an ITER like wall in D plasmas with He-3 concentrations up to 30% in order to boost the fusion reactivity by D-He-3 reactions. The harmonic cyclotron heating produces high-energy tails in the MeV range of D ions by on-axis heating and of He-3 ions by tangential off-axis heating. The discharges are characterized by long sawtooth free periods and a rich spectrum of MHD modes excited by the fast D and He-3 ions. The partitions of the power, which depend on the distribution function of D, vary strongly over several slowing down times. Self-consistent modelling of the distribution function with the SELFO-light code are presented and compared with experimental data from fast particle diagnostics.

Place, publisher, year, edition, pages
2015. UNSP 060007
, AIP Conference Proceedings, ISSN 0094-243X ; 1689
National Category
Fusion, Plasma and Space Physics
URN: urn:nbn:se:kth:diva-180389DOI: 10.1063/1.4936505ISI: 000366583100043ISBN: 978-0-7354-1336-8OAI: diva2:894034
21st Topical Conference on Radiofrequency Power in Plasmas, APR 27-JUL 29, 2015, CA

QC 20160114

Available from: 2016-01-14 Created: 2016-01-13 Last updated: 2016-01-14Bibliographically approved

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Hellsten, TorbjörnJohnson, Thomas
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