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Identification of a...
Identification of an Optimized Heating and Fast Ion Generation Scheme for the Wendelstein 7-X Stellarator
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- Patten, H. W. (author)
- Ecole Polytech Fed Lausanne, SPC, CH-1015 Lausanne, Switzerland.;Univ Oxford, Dept Stat, Oxford OX1 3LB, England.
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- Graves, J. P. (author)
- Ecole Polytech Fed Lausanne, SPC, CH-1015 Lausanne, Switzerland.
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- Cooper, W. A. (author)
- Ecole Polytech Fed Lausanne, SPC, CH-1015 Lausanne, Switzerland.
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- Eriksson, Jacob, Dr, 1985- (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Pfefferle, D. (author)
- Univ Western Australia, Crawley 6009, Australia.
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Ecole Polytech Fed Lausanne, SPC, CH-1015 Lausanne, Switzerland;Univ Oxford, Dept Stat, Oxford OX1 3LB, England. Ecole Polytech Fed Lausanne, SPC, CH-1015 Lausanne, Switzerland. (creator_code:org_t)
- AMER PHYSICAL SOC, 2020
- 2020
- English.
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In: Physical Review Letters. - : AMER PHYSICAL SOC. - 0031-9007 .- 1079-7114. ; 124:15
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Abstract
Subject headings
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- A Doppler shifted resonance minority species ion cyclotron range of frequency (ICRF) scheme for heating neutral beam ions has been identified and optimized for theWendelstein 7-X stellarator. Compared with more conventional methods, the synergetic scheme increases the normalized core collisional power transfer to the background plasma, and induces larger concentrations of energetic ions. Simulations in the intricate 3D magnetic stellarator geometry reveal an energetic distribution function that is only weakly anisotropic, and is thus relevant to fast ion and alpha particle driven Alfv ' en eigenmode experimental preparation. Quasilinear theory and simulations of the Joint European Torus indicate that the excellent confinement properties are due to increased velocity diffusion from ICRF interaction along the magnetic field lines. Agreement is found between SCENIC simulations and Joint European Torus experimental measurements for the total neutron rate and the energy distribution of the fast ions.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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