Details

Autor(en) / Beteiligte

• Schneider, M.
• Johnson, T.
• Dumont, R.
• Eriksson, J.
• Eriksson, L.-G.
• Giacomelli, L.
• Girardo, J.-B.
• Hellsten, T.
• Khilkevitch, E.
• Kiptily, V.G.
• Koskela, T.
• Mantsinen, M.
• Nocente, M.
• Salewski, M.
• Sharapov, S.E.
• Shevelev, A.E.

Titel

Modelling third harmonic ion cyclotron acceleration of deuterium beams for JET fusion product studies experiments

Ist Teil von

• Nuclear fusion, 2016-11, Vol.56 (11), p.112022

Erscheinungsjahr

2016

Beschreibungen/Notizen

• Abstract Recent JET experiments have been dedicated to the studies of fusion reactions between deuterium (D) and Helium-3 ( 3 He) 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 D 3 He 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.