Abstract
A multichannel X-ray spectrometer has been installed on TORE SUPRA in order to study photon emission between 30 and 700 keV, during lower hybrid experiments. This diagnostic is designed to observe the build-up of the momentum distribution of the fast electrons due to Landau damping on the RF waves, with both space and time resolution. In this paper, we describe the experimental set-up and present first results. For high density plasmas, well-defined spectra are observed up to 300-350 keV. The line-integrated emission profiles are peaked at low energy, and become hollow above 150 keV. This result is consistent with the accessibility of the RF waves inside the discharge. Low density plasmas exhibit a strongly peaked X-ray emission profile at all energies and, for the central chords, spectra extend up to 500 keV. In this case, it is shown that X rays scattered by the tokamak chamber become dominant balow 200 keV, for the lines of sight at the edge of the plasma.
Peysson, Y;
Bizarro, J P;
Hoang, G T;
Litaudon, X;
Moreau, D;
Poitou-Pocheau, C;
Rax, J M;
[1]
Hubbard, A
[2]
- Association Euratom-CEA, Centre d`Etudes Nucleaires de Cadarache, 13 - Saint-Paul-lez-Durance (France). Dept. de Recherches sur la Fusion Controlee
- Quebec Univ., Varennes, PQ (CA). Energy Research Centre
Citation Formats
Peysson, Y, Bizarro, J P, Hoang, G T, Litaudon, X, Moreau, D, Poitou-Pocheau, C, Rax, J M, and Hubbard, A.
Tore-Supra X-ray pulse-height analyzer diagnostic.
France: N. p.,
1991.
Web.
Peysson, Y, Bizarro, J P, Hoang, G T, Litaudon, X, Moreau, D, Poitou-Pocheau, C, Rax, J M, & Hubbard, A.
Tore-Supra X-ray pulse-height analyzer diagnostic.
France.
Peysson, Y, Bizarro, J P, Hoang, G T, Litaudon, X, Moreau, D, Poitou-Pocheau, C, Rax, J M, and Hubbard, A.
1991.
"Tore-Supra X-ray pulse-height analyzer diagnostic."
France.
@misc{etde_10131403,
title = {Tore-Supra X-ray pulse-height analyzer diagnostic}
author = {Peysson, Y, Bizarro, J P, Hoang, G T, Litaudon, X, Moreau, D, Poitou-Pocheau, C, Rax, J M, and Hubbard, A}
abstractNote = {A multichannel X-ray spectrometer has been installed on TORE SUPRA in order to study photon emission between 30 and 700 keV, during lower hybrid experiments. This diagnostic is designed to observe the build-up of the momentum distribution of the fast electrons due to Landau damping on the RF waves, with both space and time resolution. In this paper, we describe the experimental set-up and present first results. For high density plasmas, well-defined spectra are observed up to 300-350 keV. The line-integrated emission profiles are peaked at low energy, and become hollow above 150 keV. This result is consistent with the accessibility of the RF waves inside the discharge. Low density plasmas exhibit a strongly peaked X-ray emission profile at all energies and, for the central chords, spectra extend up to 500 keV. In this case, it is shown that X rays scattered by the tokamak chamber become dominant balow 200 keV, for the lines of sight at the edge of the plasma.}
place = {France}
year = {1991}
month = {Dec}
}
title = {Tore-Supra X-ray pulse-height analyzer diagnostic}
author = {Peysson, Y, Bizarro, J P, Hoang, G T, Litaudon, X, Moreau, D, Poitou-Pocheau, C, Rax, J M, and Hubbard, A}
abstractNote = {A multichannel X-ray spectrometer has been installed on TORE SUPRA in order to study photon emission between 30 and 700 keV, during lower hybrid experiments. This diagnostic is designed to observe the build-up of the momentum distribution of the fast electrons due to Landau damping on the RF waves, with both space and time resolution. In this paper, we describe the experimental set-up and present first results. For high density plasmas, well-defined spectra are observed up to 300-350 keV. The line-integrated emission profiles are peaked at low energy, and become hollow above 150 keV. This result is consistent with the accessibility of the RF waves inside the discharge. Low density plasmas exhibit a strongly peaked X-ray emission profile at all energies and, for the central chords, spectra extend up to 500 keV. In this case, it is shown that X rays scattered by the tokamak chamber become dominant balow 200 keV, for the lines of sight at the edge of the plasma.}
place = {France}
year = {1991}
month = {Dec}
}