Recent progress in fast-ion diagnostics for magnetically confined plasmas
TLDR
In this article, the authors review key diagnostic techniques for confined and lost fast ions in tokamak and stellarator plasmas, and discuss the physical principles of each diagnostic, sensitivities, basic setups, and operational parameters.Abstract:
On the road to a fusion reactor, a thorough control of the fast-ion distribution plays a crucial role. Fusion-born $$\alpha$$
-particles are, indeed, a necessary ingredient of self-sustained burning plasmas. Recent developments in the diagnostic of fast-ion distributions have significantly improved our predictive capabilities towards future devices. Here, we review key diagnostic techniques for confined and lost fast ions in tokamak and stellarator plasmas. We discuss neutron and gamma-ray spectroscopy, fast-ion D-
$$\alpha$$
spectroscopy, collective Thomson scattering, neutral particle analyzers, and fast-ion loss detectors. The review covers physical principles of each diagnostic, sensitivities, basic setups, and operational parameters. The review is largely (but not exclusively) based on the contributions from ASDEX Upgrade and JET. Finally, we discuss integrated data analysis of fast-ion diagnostics by velocity-space tomography which allows measurements of 2D velocity distribution functions of confined fast ions.read more
Citations
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Journal Article
MHD induced fast ion losses in ASDEX Upgrade
M. Garcia-Munoz,H.-U. Fahrbach,H. Zohm,Josef Neuhauser,M. Maraschek,S. Guenter,Piero Martin,Karl Sassenberg,V. Igochine +8 more
TL;DR: A detailed knowledge of the interplay between MHD instabilities and energetic particles has been gained from direct measurements of fast-ion losses (FILs) using a scintillator based FIL detector as mentioned in this paper.
Journal ArticleDOI
Generation and observation of fast deuterium ions and fusion-born alpha particles in JET \mathrm{D-(3He}) plasmas with the 3-ion radio-frequency heating scenario
M. Nocente,M. Nocente,Ye. O. Kazakov,J. Garcia,V. G. Kiptily,J. Ongena,M. Dreval,Michael Fitzgerald,S. E. Sharapov,Z. Stancar,H. Weisen,Y. Baranov,Andreas Bierwage,Teddy Craciunescu,A. Dal Molin,E. de la Luna,R. J. Dumont,Pierre Dumortier,Jacob Eriksson,L. Giacomelli,C. Giroud,V. Goloborod'ko,Giuseppe Gorini,Giuseppe Gorini,E.M. Khilkevitch,K. K. Kirov,M. Iliasova,Ph. Jacquet,Philipp Lauber,E. Lerche,M. J. Mantsinen,A. Mariani,S. Mazzi,F. Nabais,M. F. F. Nave,J. Oliver,E. Panontin,D. Rigamonti,A. Sahlberg,Mirko Salewski,A. E. Shevelev,Kyosuke Shinohara,P. Siren,S. Sumida,M. Tardocchi,D. Van Eester,Jari Varje,A. Zohar,Jet Contributors +48 more
Journal ArticleDOI
Bi-Maxwellian, slowing-down, and ring velocity distributions of fast ions in magnetized plasmas
Dmitry Moseev,Mirko Salewski +1 more
TL;DR: In this article, analytical fast-ion velocity distribution functions which are useful for basic plasma modelling as illustrated for the tokamak ITER have been discussed, and 1D projections of the distribution functions onto a diagnostic line-of-sight to gain insight into measurements relying on the Doppler shift.
Journal ArticleDOI
Alpha-particle velocity-space diagnostic in ITER
Mirko Salewski,M. Nocente,B. Madsen,I. Abramovic,Michael Fitzgerald,Giuseppe Gorini,Per Christian Hansen,William Heidbrink,A. S. Jacobsen,Toke Koldborg Jensen,V. G. Kiptily,E. B. Klinkby,Søren Bang Korsholm,Taina Kurki-Suonio,A.W. Larsen,Frank Leipold,Dmitry Moseev,Stefan Kragh Nielsen,S. D. Pinches,J. Juul Rasmussen,Marica Rebai,M. Schneider,A. E. Shevelev,Seppo Sipilä,M. Stejner,M. Tardocchi +25 more
TL;DR: In this article, the authors discuss α-particle velocity-space diagnostic in ITER based on the planned collective Thomson scattering (CTS) and γ-ray spectrometry (GRS) systems as well as ASCOT simulations of the αparticle distribution function.
Journal ArticleDOI
MeV range particle physics studies in tokamak plasmas using gamma-ray spectroscopy
Jet Contributers,Mst Team,M. Nocente,A. Dal Molin,N.W. Eidietis,L. Giacomelli,Giuseppe Gorini,Ye. O. Kazakov,E.M. Khilkevitch,Vasily Kiptily,M. Iliasova,Andrey Lvovskiy,M. J. Mantsinen,A. Mariani,E. Panontin,Gergely Papp,G. Pautasso,Carlos Paz-Soldan,D. Rigamonti,Mirko Salewski,A. E. Shevelev,M. Tardocchi +21 more
TL;DR: Gamma-ray spectroscopy has become an established technique to determine properties of the distribution function of the energetic particles in the MeV range, which are fast ions from heating and fusion reactions or runaway electrons born in disruptions as mentioned in this paper.
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