Fast-ion distributions from third harmonic ICRF heating studied with neutron emission spectroscopy

C. Hellesen, M. Gatu Johnson, E. Andersson Sundén, S. Conroy, G. Ericsson, J. Eriksson, H. Sjöstrand, M. Weiszflog, T. Johnson, G. Gorini, M. Nocente, M. Tardocchi, V.G. Kiptily, S.D. Pinches, S.E. Sharapov

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Abstract

The fast-ion distribution from third harmonic ion cyclotron resonance frequency (ICRF) heating on the Joint European Torus is studied using neutron emission spectroscopy with the time-of-flight spectrometer TOFOR. The energy dependence of the fast deuteron distribution function is inferred from the measured spectrum of neutrons born in DD fusion reactions, and the inferred distribution is compared with theoretical models for ICRF heating. Good agreements between modelling and measurements are seen with clear features in the fast-ion distribution function, that are due to the finite Larmor radius of the resonating ions, replicated. Strong synergetic effects between ICRF and neutral beam injection heating were also seen. The total energy content of the fast-ion population derived from TOFOR data was in good agreement with magnetic measurements for values below 350 kJ. © 2013 IAEA, Vienna.
Original languageEnglish
Article number113009
Pages (from-to)-
JournalNuclear Fusion
Volume53
Issue number11
DOIs
Publication statusPublished - Nov 2013
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Hellesen, C., Gatu Johnson, M., Andersson Sundén, E., Conroy, S., Ericsson, G., Eriksson, J., Sjöstrand, H., Weiszflog, M., Johnson, T., Gorini, G., Nocente, M., Tardocchi, M., Kiptily, V. G., Pinches, S. D., & Sharapov, S. E. (2013). Fast-ion distributions from third harmonic ICRF heating studied with neutron emission spectroscopy. Nuclear Fusion, 53(11), -. [113009]. https://doi.org/10.1088/0029-5515/53/11/113009