We demonstrate the measurement of a 2D MeV-range ion velocity distribution function by velocity-space tomography at JET. Deuterium ions were accelerated into the MeV-range by third harmonic ion cyclotron resonance heating. We made measurements with three neutron emission spectrometers and a high-resolution γ-ray spectrometer detecting the γ-rays released in two reactions. The tomographic inversion based on these five spectra is in excellent agreement with numerical simulations with the ASCOT-RFOF and the SPOT-RFOF codes. The length of the measured fast-ion tail corroborates the prediction that very few particles are accelerated above 2 MeV due to the weak wave-particle interaction at higher energies.
Salewski, M., Nocente, M., Jacobsen, A., Binda, F., Cazzaniga, C., Ericsson, G., et al. (2017). MeV-range velocity-space tomography from gamma-ray and neutron emission spectrometry measurements at JET. NUCLEAR FUSION, 57(5).
Citazione: | Salewski, M., Nocente, M., Jacobsen, A., Binda, F., Cazzaniga, C., Ericsson, G., et al. (2017). MeV-range velocity-space tomography from gamma-ray and neutron emission spectrometry measurements at JET. NUCLEAR FUSION, 57(5). |
Tipo: | Articolo in rivista - Articolo scientifico |
Carattere della pubblicazione: | Scientifica |
Presenza di un coautore afferente ad Istituzioni straniere: | Si |
Titolo: | MeV-range velocity-space tomography from gamma-ray and neutron emission spectrometry measurements at JET |
Autori: | Salewski, M; Nocente, M; Jacobsen, A; Binda, F; Cazzaniga, C; Ericsson, G; Eriksson, J; Gorini, G; Hellesen, C; Hjalmarsson, A; Kiptily, V; Koskela, T; Korsholm, S; Kurki Suonio, T; Leipold, F; Madsen, J; Moseev, D; Nielsen, S; Rasmussen, J; Schneider, M; Sharapov, S; Stejner, M; Tardocchi, M |
Autori: | NOCENTE, MASSIMO (Secondo) TARDOCCHI, MARCO (Ultimo) |
Data di pubblicazione: | 2017 |
Lingua: | English |
Rivista: | NUCLEAR FUSION |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1088/1741-4326/aa60e9 |
Appare nelle tipologie: | 01 - Articolo su rivista |