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Study of ICRH scenarios for thermal ion heating in JET DT plasmasKazakov, Y. O. ...Various ion cyclotron resonance heating (ICRH) scenarios relevant for the DT phase of the JET tokamak are studied. Recent ICRH experiments in JET (3He)D and (3He)H plasmas confirmed the possibility ... of electron heating enhancement in the mode conversion (MC) regime due to the constructive interference of the reflected fast waves. Such a heating enhancement in DT plasma is investigated first for JET-like conditions for both dipole and +/2 ICRH antenna phasing, and for T concentration varied from 0% to 100%. It is shown that most of the MC scenarios at comparable concentrations of D and T species suffer from a parasitic absorption by fusion-born alpha-particles and NBI-produced fast ions whereas the impact of such fast ions in the minority heating (MH) ICRH schemes is substantially smaller. A possibility of ion heating enhancement due to the interference effect is shown for the MH scenarios. It is found that thermal ion heating becomes dominant in tritium-rich plasmas with T concentration ~80%. The efficiency of ion heating in such a scenario is compared with the alternative 3He minority ICRH scenario in D:T = 50:50 plasmas.Source: Papers (Iss. 9, Vol. 52, 2012, 14 str.)Type of material - conference contributionPublish date - 2012Language - englishCOBISS.SI-ID - 26886695
Author
Kazakov, Y. O. |
Kiptily, V. |
Sharapov, S. E. |
Lengar, Igor |
Snoj, Luka, 1981- |
Trkov, Andrej |
Žefran, Bojan
Topics
jedrska fizika |
fizika plazme
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kazakov, Y. O. | ![]() |
Kiptily, V. | ![]() |
Sharapov, S. E. | ![]() |
Lengar, Igor | 19167 |
Snoj, Luka, 1981- | 27819 |
Trkov, Andrej | 08557 |
Žefran, Bojan | 15742 |
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