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.

Hellesen, C., Johnson, M., Sunden, E., Conroy, S., Ericsson, G., Eriksson, J., et al. (2013). Fast-ion distributions from third harmonic ICRF heating studied with neutron emission spectroscopy. NUCLEAR FUSION, 53(11) [10.1088/0029-5515/53/11/113009].

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

GORINI, GIUSEPPE;NOCENTE, MASSIMO;
2013

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.
Articolo in rivista - Articolo scientifico
Fast ions, neutron spectroscopy
English
2013
53
11
113009
none
Hellesen, C., Johnson, M., Sunden, E., Conroy, S., Ericsson, G., Eriksson, J., et al. (2013). Fast-ion distributions from third harmonic ICRF heating studied with neutron emission spectroscopy. NUCLEAR FUSION, 53(11) [10.1088/0029-5515/53/11/113009].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/51015
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