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Diagnostic of fast-...
Diagnostic of fast-ion energy spectra and densities in magnetized plasmas
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- Salewski, M. (author)
- Tech Univ Denmark, Lyngby, Denmark.;Tech Univ Denmark, Dept Phys, Bldg 309, DK-2800 Lyngby, Denmark.
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- Bergsåker, Henrik (author)
- KTH,Fusionsplasmafysik
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- Bykov, Igor (author)
- KTH,Fusionsplasmafysik
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- Frassinetti, Lorenzo (author)
- KTH,Fusionsplasmafysik,Tech Univ Denmark, Lyngby, Denmark
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- Garcia Carrasco, Alvaro, 1989- (author)
- KTH,Fusionsplasmafysik
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- Hellsten, Torbjörn (author)
- KTH,Fusionsplasmafysik
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- Johnson, Thomas (author)
- KTH,Fusionsplasmafysik
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- Menmuir, Sheena (author)
- KTH,Fusionsplasmafysik
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- Petersson, Per (author)
- KTH,Fusionsplasmafysik
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- Rachlew, Elisabeth (author)
- KTH,Partikel- och astropartikelfysik
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- Ratynskaia, Svetlana (author)
- KTH,Rymd- och plasmafysik
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- Rubel, Marek (author)
- KTH,Fusionsplasmafysik
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- Stefániková, Estera (author)
- KTH,Fusionsplasmafysik
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- Ström, Petter (author)
- KTH,Fusionsplasmafysik
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- Tholerus, Emmi (author)
- KTH,Fusionsplasmafysik
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- Tolias, Panagiotis (author)
- KTH,Rymd- och plasmafysik
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- Olivares, Pablo Vallejos (author)
- KTH,Fusionsplasmafysik
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- Weckmann, Armin (author)
- KTH,Fusionsplasmafysik
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- Zhou, Yushan (author)
- KTH,Fusionsplasmafysik
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- Zychor, I. (author)
- Natl Ctr Nucl Res, PL-05400 Otwock, Poland.
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- Nocente, M. (author)
- Univ Milano Bicocca, Dept Phys, Milan, Italy;CNR, Ist Fis Plasma, Milan, Italy
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- Madsen, B. (author)
- Tech Univ Denmark, Lyngby, Denmark
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- Abramovic, I. (author)
- Max Planck Inst Plasma Phys, Greifswald, Germany
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- Gorini, G. (author)
- Univ Milano Bicocca, Dept Phys, Milan, Italy;CNR, Ist Fis Plasma, Milan, Italy,Culham Sci Ctr, CCFE, Abingdon, Oxon, England
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- Jacobsen, A. S. (author)
- Culham Sci Ctr, CCFE, Abingdon, Oxon, England
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- Korsholm, S. B. (author)
- Tech Univ Denmark, Lyngby, Denmark
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- Moseev, D. (author)
- Max Planck Inst Plasma Phys, Greifswald, Germany
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- Nielsen, S. K. (author)
- Tech Univ Denmark, Lyngby, Denmark
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- Rasmussen, J. (author)
- Tech Univ Denmark, Lyngby, Denmark
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- Tardocchi, M. (author)
- CNR, Ist Fis Plasma, Milan, Italy
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- Geiger, B. (author)
- Max Planck Inst Plasma Phys, Garching, Germany
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- Eriksson, Jacob, Dr, 1985- (author)
- Uppsala universitet,Tillämpad kärnfysik
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Tech Univ Denmark, Lyngby, Denmark;Tech Univ Denmark, Dept Phys, Bldg 309, DK-2800 Lyngby, Denmark. Fusionsplasmafysik (creator_code:org_t)
- Institute of Physics Publishing (IOPP), 2019
- 2019
- English.
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In: Journal of Instrumentation. - : Institute of Physics Publishing (IOPP). - 1748-0221. ; 14
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
Close
- The measurement of the energy spectra and densities of alpha-particles and other fast ions are part of the ITER measurement requirements, highlighting the importance of energy-resolved energetic-particle measurements for the mission of ITER. However, it has been found in recent years that the velocity-space interrogation regions of the foreseen energetic-particle diagnostics do not allow these measurements directly. We will demonstrate this for gamma-ray spectroscopy (GRS), collective Thomson scattering (CTS), neutron emission spectroscopy and fast-ion D-alpha spectroscopy by invoking energy and momentum conservation in each case, highlighting analogies and differences between the different diagnostic velocity-space sensitivities. Nevertheless, energy spectra and densities can be inferred by velocity-space tomography which we demonstrate using measurements at JET and ASDEX Upgrade. The measured energy spectra agree well with corresponding simulations. At ITER, alpha-particle energy spectra and densities can be inferred for energies larger than 1.7 MeV by velocity-space tomography based on GRS and CTS. Further, assuming isotropy of the alpha-particles in velocity space, their energy spectra and densities can be inferred by 1D inversion of spectral single-detector measurements down to about 300 keV by CTS. The alpha-particle density can also be found by fitting a model to the CTS measurements assuming the alpha-particle distribution to be an isotropic slowing-down distribution.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Keyword
- Nuclear instruments and methods for hot plasma diagnostics
- Computerized Tomography (CT)
- Computed Radiography (CR)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Salewski, M.
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Bergsåker, Henri ...
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Bykov, Igor
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Frassinetti, Lor ...
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Garcia Carrasco, ...
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Hellsten, Torbjö ...
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show more...
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Johnson, Thomas
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Menmuir, Sheena
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Petersson, Per
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Rachlew, Elisabe ...
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Ratynskaia, Svet ...
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Rubel, Marek
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Stefániková, Est ...
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Ström, Petter
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Tholerus, Emmi
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Tolias, Panagiot ...
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Olivares, Pablo ...
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Weckmann, Armin
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Zhou, Yushan
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Zychor, I.
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Nocente, M.
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Madsen, B.
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Abramovic, I.
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Gorini, G.
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Jacobsen, A. S.
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Korsholm, S. B.
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Moseev, D.
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Nielsen, S. K.
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Rasmussen, J.
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Tardocchi, M.
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Geiger, B.
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Eriksson, Jacob, ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
- Articles in the publication
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Journal of Instr ...
- By the university
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Royal Institute of Technology
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Uppsala University