RF heating for fusion product studies | Zendy

Hellsten, T. | Zendy; Johnson, T. | Zendy; Sharapov, S. E. | Zendy; Kiptily, V. | Zendy; Eriksson, J. | Zendy; Mantsinen, M. | Zendy; Schneider, M. | Zendy; Rimini, F. | Zendy; Tsalas, M. | Zendy

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RF heating for fusion product studies

Author(s) -

Hellsten, T.,

Johnson, T.,

Sharapov, S. E.,

Kiptily, V.,

Eriksson, J.,

Mantsinen, M.,

Schneider, M.,

Rimini, F.,

Tsalas, M.

Publication year - 2015

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4936505

Subject(s) - cyclotron , plasma , atomic physics , ion , sawtooth wave , distribution function , range (aeronautics) , deuterium , excited state , neutral beam injection , fusion power , physics , nuclear fusion , jet (fluid) , charged particle , harmonic , magnetic confinement fusion , nuclear physics , materials science , tokamak , quantum mechanics , computer science , composite material , computer vision , thermodynamics

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

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