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Resonant interactio...
Resonant interaction between runaway electrons and the toroidal magnetic field ripple in TCV
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- Wijkamp, T. A. (author)
- Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands.;DIFFER Dutch Inst Fundamental Energy Res, Zaale 20, NL-5612 AJ Eindhoven, Netherlands.
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- Hoppe, Mathias (author)
- KTH,Elektromagnetism och fusionsfysik,Ecole Polytech Fed Lausanne EPFL, Swiss Plasma Ctr SPC, Lausanne, Switzerland.
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- Decker, J. (author)
- Ecole Polytech Fed Lausanne EPFL, Swiss Plasma Ctr SPC, Lausanne, Switzerland.
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- Duval, B. P. (author)
- Ecole Polytech Fed Lausanne EPFL, Swiss Plasma Ctr SPC, Lausanne, Switzerland.
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- Perek, A. (author)
- Ecole Polytech Fed Lausanne EPFL, Swiss Plasma Ctr SPC, Lausanne, Switzerland.
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- Sheikh, U. (author)
- Ecole Polytech Fed Lausanne EPFL, Swiss Plasma Ctr SPC, Lausanne, Switzerland.
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- Classen, I. G. J. (author)
- DIFFER Dutch Inst Fundamental Energy Res, Zaale 20, NL-5612 AJ Eindhoven, Netherlands.
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- Jaspers, R. J. E. (author)
- Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands.
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Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands;DIFFER Dutch Inst Fundamental Energy Res, Zaale 20, NL-5612 AJ Eindhoven, Netherlands. Elektromagnetism och fusionsfysik (creator_code:org_t)
- IOP Publishing, 2024
- 2024
- English.
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In: Nuclear Fusion. - : IOP Publishing. - 0029-5515 .- 1741-4326. ; 64:1
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- This work explains the anomalously high runaway electron (RE) pitch angles inferred in the flat-top of dedicated Tokamak a Configuration Variable (TCV) experiments. Kinetic modelling shows that the resonant interaction between the gyromotion of the electrons and the toroidal magnetic field ripple will give rise to strong pitch angle scattering in TCV. The resulting increase in synchrotron radiation power losses acts as a RE energy barrier. These observations are tested experimentally by a magnetic field ramp-down, which gradually reduces the resonant parallel momentum at which the REs interact with the ripple. Resulting changes in synchrotron emission geometry and intensity are observed using three multi-spectral camera imaging systems, viewing the RE beam at distinct spatial angles in multiple wavelength ranges. Experimental reconstructions of the RE distribution in momentum- and real-space are consistent with kinetic model predictions.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- runaway electrons
- kinetic modelling
- TCV
- tokamaks
- multi-spectral imaging
Publication and Content Type
- ref (subject category)
- art (subject category)
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