↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Träfflista för sökning "onr:"swepub:oai:DiVA.org:kth-270846" "

Search: onr:"swepub:oai:DiVA.org:kth-270846"

Result 1-1 of 1

Sort/group result

Sort by: Hits per page:

Enumeration	Reference	Cover	Find
1.	Salewski, M., et al. (author) Diagnostic of fast-ion energy spectra and densities in magnetized plasmas 2019 In: Journal of Instrumentation. - : Institute of Physics Publishing (IOPP). - 1748-0221. ; 14 Journal article (peer-reviewed)abstract 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.

Skapa referenser, mejla, bekava och länka

Permalink

Result 1-1 of 1

Refine your search

Type of publication: journal article (1)

Type of content: peer-reviewed (1)

Author/Editor: Gorini, G (1); Rubel, Marek (1); Frassinetti, Lorenzo (1); Menmuir, Sheena (1); Hellsten, Torbjörn (1); Nocente, M (1); show more...; Rachlew, Elisabeth (1); Salewski, M (1); Tardocchi, M (1); Zychor, I (1); Bykov, Igor (1); Johnson, Thomas (1); Petersson, Per (1); Ström, Petter (1); Tholerus, Emmi (1); Weckmann, Armin (1); Eriksson, Jacob, Dr, ... (1); Rasmussen, J. (1); Ratynskaia, Svetlana (1); Stefanikova, Estera (1); Geiger, B. (1); Jacobsen, A.S. (1); Olivares, Pablo Vall ... (1); Madsen, B. (1); Bergsåker, Henrik (1); Garcia Carrasco, Alv ... (1); Tolias, Panagiotis (1); Zhou, Yushan (1); Nielsen, S. K. (1); Abramovic, I (1); Moseev, D (1); Korsholm, S. B. (1); show less...

University: Royal Institute of Technology (1); Uppsala University (1)

Language: English (1)

Research subject (UKÄ/SCB): Natural sciences (1)

Year: 2019 (1)

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

Copyright © LIBRIS - National Library Systems
LIBRIS.kb.se

pil uppåt

Close

Copy and save the link in order to return to this view