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On the minimum tran...
On the minimum transport required to passively suppress runaway electrons in SPARC disruptions
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- Tinguely, R. A. (author)
- Massachusetts Institute of Technology (MIT)
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- Pusztai, Istvan, 1983 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Izzo, V. (author)
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- Sarkimaki, K. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Fülöp, Tünde-Maria, 1970 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Garnier, D. T. (author)
- Massachusetts Institute of Technology (MIT)
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- Granetz, R. S. (author)
- Massachusetts Institute of Technology (MIT)
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- Hoppe, M. (author)
- Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL)
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- Paz-Soldan, C. (author)
- Columbia University in the City of New York
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- Sundström, Andréas, 1994 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sweeney, R. (author)
- Massachusetts Institute of Technology (MIT)
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(creator_code:org_t)
- 2023-01-31
- 2023
- English.
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In: Plasma Physics and Controlled Fusion. - : IOP Publishing. - 1361-6587 .- 0741-3335. ; 65:3
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Abstract
Subject headings
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- In Izzo et al (2022 Nucl. Fusion 62 096029), state-of-the-art modeling of thermal and current quench (CQ) magnetohydrodynamics (MHD) coupled with a self-consistent evolution of runaway electron (RE) generation and transport showed that a non-axisymmetric (n = 1) in-vessel coil could passively prevent RE beam formation during disruptions in SPARC, a compact high-field tokamak projected to achieve a fusion gain Q > 2 in DT plasmas. However, such suppression requires finite transport of REs within magnetic islands and re-healed flux surfaces; conservatively assuming zero transport in these regions leads to an upper bound of RE current ∼ 1 M A compared to ∼ 8.7 M A of pre-disruption plasma current. Further investigation finds that core-localized electrons, within r / a < 0.3 and with kinetic energies ∼ 0.2 - 15 M e V , contribute most to the RE plateau formation. Yet only a relatively small amount of transport, i.e. a diffusion coefficient ∼ 18 m 2 s − 1 , is needed in the core to fully mitigate these REs. Properly accounting for (a) the CQ electric field’s effect on RE transport in islands and (b) the contribution of significant RE currents to disruption MHD may help achieve this.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- disruptions
- transport
- runaway electrons
- passive mitigation
- SPARC
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Tinguely, R. A.
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Pusztai, Istvan, ...
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Izzo, V.
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Sarkimaki, K.
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Fülöp, Tünde-Mar ...
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Garnier, D. T.
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show more...
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Granetz, R. S.
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Hoppe, M.
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Paz-Soldan, C.
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Sundström, André ...
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Sweeney, R.
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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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and Other Physics To ...
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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 ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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Plasma Physics a ...
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Chalmers University of Technology