Neutron spectroscopy measurements and modeling of neutral beam heating fast ion dynamics

C. Hellesen, M. Albergante, E. Andersson Sundén, L. Ballabio, S. Conroy, G. Ericsson, M. Gatu Johnson, L. Giacomelli, G. Gorini, A. Hjalmarsson, I. Jenkins, J. Källne, E. Ronchi, H. Sjöstrand, M. Tardocchi, I. Voitsekhovitch, M. Weiszflog

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Abstract

The energy spectrum of the neutron emission from beam-target reactions in fusion plasmas at the Joint European Torus (JET) has been investigated. Different beam energies as well as injection angles were used. Both measurements and simulations of the energy spectrum were done. The measurements were made with the time-of-flight spectrometer TOFOR. Simulations of the neutron spectrum were based on first-principle calculations of neutral beam deposition profiles and the fast ion slowing down in the plasma using the code NUBEAM, which is a module of the TRANSP package. The shape of the neutron energy spectrum was seen to vary significantly depending on the energy of the beams as well as the injection angle and the deposition profile in the plasma. Cross validations of the measured and modeled neutron energy spectra were made, showing a good agreement for all investigated scenarios.
Original languageEnglish
Article number085013
Pages (from-to)-
JournalPlasma Physics and Controlled Fusion
Volume52
Issue number8
DOIs
Publication statusPublished - 9 Jul 2010
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Hellesen, C., Albergante, M., Andersson Sundén, E., Ballabio, L., Conroy, S., Ericsson, G., ... Weiszflog, M. (2010). Neutron spectroscopy measurements and modeling of neutral beam heating fast ion dynamics. Plasma Physics and Controlled Fusion, 52(8), -. [085013]. https://doi.org/10.1088/0741-3335/52/8/085013