Temperature gradient driven electron transport in NSTX and Tore Supra
Identifieur interne : 000503 ( Istex/Curation ); précédent : 000502; suivant : 000504Temperature gradient driven electron transport in NSTX and Tore Supra
Auteurs : W. Horton [États-Unis] ; H. V. Wong [États-Unis] ; P. J. Morrison [États-Unis] ; A. Wurm [États-Unis] ; J. H. Kim [États-Unis] ; J. C. Perez [États-Unis] ; J. Pratt [États-Unis] ; G. T. Hoang [France] ; B. P. Leblanc [États-Unis] ; R. Ball [Australie]Source :
- Nuclear Fusion [ 0029-5515 ] ; 2005.
Descripteurs français
- Wicri :
- topic : Simulation.
English descriptors
- KwdEn :
- Anomalous electron, Central barrier, Centre, Centre orbits, Chaos solitons fractals, Collisionless skin depth, Core region, Critical gradient, Data points, Diffusivity, Dimensionless, Dispersion relation, Dynamical systems, Eigenvalue problem, Electron, Electron diffusivity, Electron dynamics, Electron mode, Electron power balance analysis, Electron temperature, Electron temperature gradient, Electron transport, Electron transport figure, Error bars, Experimental data, Growth rate, Gure, Helium discharges, Hoang bourdelle, Horton, Impurity ions, Initial conditions, Island chains, Isopotential contours, Line stochasticity, Magnetic shear, Nstx, Nstx discharge, Nstx discharges, Order resonances, Partial transport barriers, Phys, Physics publishing, Plasma pressure, Poloidal, Poloidal plane, Power balance, Power balance diffusivity, Power density, Random error, Reconnection, Relative deviation, Rotation number, Safety factor, Separatrix reconnection, Shearless, Shearless torus, Simulation, Small scale, Temperature gradient, Time scales, Tokamak, Torus, Turbulence, Vertical axis, Wave electron heating, Wave heating, Wide range.
- Teeft :
- Anomalous electron, Central barrier, Centre, Centre orbits, Chaos solitons fractals, Collisionless skin depth, Core region, Critical gradient, Data points, Diffusivity, Dimensionless, Dispersion relation, Dynamical systems, Eigenvalue problem, Electron, Electron diffusivity, Electron dynamics, Electron mode, Electron power balance analysis, Electron temperature, Electron temperature gradient, Electron transport, Electron transport figure, Error bars, Experimental data, Growth rate, Gure, Helium discharges, Hoang bourdelle, Horton, Impurity ions, Initial conditions, Island chains, Isopotential contours, Line stochasticity, Magnetic shear, Nstx, Nstx discharge, Nstx discharges, Order resonances, Partial transport barriers, Phys, Physics publishing, Plasma pressure, Poloidal, Poloidal plane, Power balance, Power balance diffusivity, Power density, Random error, Reconnection, Relative deviation, Rotation number, Safety factor, Separatrix reconnection, Shearless, Shearless torus, Simulation, Small scale, Temperature gradient, Time scales, Tokamak, Torus, Turbulence, Vertical axis, Wave electron heating, Wave heating, Wide range.
Abstract
Electron thermal fluxes are derived from the power balance for Tore Supra (TS) and NSTX discharges with centrally deposited fast wave electron heating. Measurements of the electron temperature and density profiles, combined with ray tracing computations of the power absorption profiles, allow detailed interpretation of the thermal flux versus temperature gradient. Evidence supporting the occurrence of electron temperature gradient turbulent transport in the two confinement devices is found. With control of the magnetic rotational transform profile and the heating power, internal transport barriers are created in TS and NSTX discharges. These partial transport barriers are argued to be a universal feature of transport equations in the presence of invariant tori that are intrinsic to non-monotonic rotational transforms in dynamical systems.
Url:
DOI: 10.1088/0029-5515/45/8/025
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Horton</name><affiliation wicri:level="1"><mods:affiliation>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712</wicri:regionArea></affiliation></author><author><name sortKey="Wong, H V" sort="Wong, H V" uniqKey="Wong H" first="H. V." last="Wong">H. V. Wong</name><affiliation wicri:level="1"><mods:affiliation>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712</wicri:regionArea></affiliation></author><author><name sortKey="Morrison, P J" sort="Morrison, P J" uniqKey="Morrison P" first="P. J." last="Morrison">P. J. Morrison</name><affiliation wicri:level="1"><mods:affiliation>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712</wicri:regionArea></affiliation></author><author><name sortKey="Wurm, A" sort="Wurm, A" uniqKey="Wurm A" first="A." last="Wurm">A. Wurm</name><affiliation wicri:level="1"><mods:affiliation>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712</wicri:regionArea></affiliation></author><author><name sortKey="Kim, J H" sort="Kim, J H" uniqKey="Kim J" first="J. H." last="Kim">J. H. Kim</name><affiliation wicri:level="1"><mods:affiliation>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712</wicri:regionArea></affiliation></author><author><name sortKey="Perez, J C" sort="Perez, J C" uniqKey="Perez J" first="J. C." last="Perez">J. C. Perez</name><affiliation wicri:level="1"><mods:affiliation>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712</wicri:regionArea></affiliation></author><author><name sortKey="Pratt, J" sort="Pratt, J" uniqKey="Pratt J" first="J." last="Pratt">J. Pratt</name><affiliation wicri:level="1"><mods:affiliation>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas, 78712</wicri:regionArea></affiliation></author><author><name sortKey="Hoang, G T" sort="Hoang, G T" uniqKey="Hoang G" first="G. T." last="Hoang">G. T. Hoang</name><affiliation wicri:level="1"><mods:affiliation>Association Euratom-CEA, CEA/DSM/DRFC, CEA Cadarache, 13108 Saint-Paul-Lez Durance, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Association Euratom-CEA, CEA/DSM/DRFC, CEA Cadarache, 13108 Saint-Paul-Lez Durance</wicri:regionArea></affiliation></author><author><name sortKey="Leblanc, B P" sort="Leblanc, B P" uniqKey="Leblanc B" first="B. P." last="Leblanc">B. P. Leblanc</name><affiliation wicri:level="1"><mods:affiliation>Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543</wicri:regionArea></affiliation></author><author><name sortKey="Ball, R" sort="Ball, R" uniqKey="Ball R" first="R." last="Ball">R. Ball</name><affiliation wicri:level="1"><mods:affiliation>The Australian National University, Canberra, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>The Australian National University, Canberra</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Nuclear Fusion</title><title level="j" type="abbrev">Nucl. Fusion</title><idno type="ISSN">0029-5515</idno><idno type="eISSN">1741-4326</idno><imprint><publisher>Institute of Physics Publishing</publisher><date type="published" when="2005">2005</date><biblScope unit="volume">45</biblScope><biblScope unit="issue">8</biblScope><biblScope unit="page" from="976">976</biblScope><biblScope unit="page" to="985">985</biblScope><biblScope unit="production">Printed in the UK</biblScope></imprint><idno type="ISSN">0029-5515</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0029-5515</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anomalous electron</term><term>Central barrier</term><term>Centre</term><term>Centre orbits</term><term>Chaos solitons fractals</term><term>Collisionless skin depth</term><term>Core region</term><term>Critical gradient</term><term>Data points</term><term>Diffusivity</term><term>Dimensionless</term><term>Dispersion relation</term><term>Dynamical systems</term><term>Eigenvalue problem</term><term>Electron</term><term>Electron diffusivity</term><term>Electron dynamics</term><term>Electron mode</term><term>Electron power balance analysis</term><term>Electron temperature</term><term>Electron temperature gradient</term><term>Electron transport</term><term>Electron transport figure</term><term>Error bars</term><term>Experimental data</term><term>Growth rate</term><term>Gure</term><term>Helium discharges</term><term>Hoang bourdelle</term><term>Horton</term><term>Impurity ions</term><term>Initial conditions</term><term>Island chains</term><term>Isopotential contours</term><term>Line stochasticity</term><term>Magnetic shear</term><term>Nstx</term><term>Nstx discharge</term><term>Nstx discharges</term><term>Order resonances</term><term>Partial transport barriers</term><term>Phys</term><term>Physics publishing</term><term>Plasma pressure</term><term>Poloidal</term><term>Poloidal plane</term><term>Power balance</term><term>Power balance diffusivity</term><term>Power density</term><term>Random error</term><term>Reconnection</term><term>Relative deviation</term><term>Rotation number</term><term>Safety factor</term><term>Separatrix reconnection</term><term>Shearless</term><term>Shearless torus</term><term>Simulation</term><term>Small scale</term><term>Temperature gradient</term><term>Time scales</term><term>Tokamak</term><term>Torus</term><term>Turbulence</term><term>Vertical axis</term><term>Wave electron heating</term><term>Wave heating</term><term>Wide range</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Anomalous electron</term><term>Central barrier</term><term>Centre</term><term>Centre orbits</term><term>Chaos solitons fractals</term><term>Collisionless skin depth</term><term>Core region</term><term>Critical gradient</term><term>Data points</term><term>Diffusivity</term><term>Dimensionless</term><term>Dispersion relation</term><term>Dynamical systems</term><term>Eigenvalue problem</term><term>Electron</term><term>Electron diffusivity</term><term>Electron dynamics</term><term>Electron mode</term><term>Electron power balance analysis</term><term>Electron temperature</term><term>Electron temperature gradient</term><term>Electron transport</term><term>Electron transport figure</term><term>Error bars</term><term>Experimental data</term><term>Growth rate</term><term>Gure</term><term>Helium discharges</term><term>Hoang bourdelle</term><term>Horton</term><term>Impurity ions</term><term>Initial conditions</term><term>Island chains</term><term>Isopotential contours</term><term>Line stochasticity</term><term>Magnetic shear</term><term>Nstx</term><term>Nstx discharge</term><term>Nstx discharges</term><term>Order resonances</term><term>Partial transport barriers</term><term>Phys</term><term>Physics publishing</term><term>Plasma pressure</term><term>Poloidal</term><term>Poloidal plane</term><term>Power balance</term><term>Power balance diffusivity</term><term>Power density</term><term>Random error</term><term>Reconnection</term><term>Relative deviation</term><term>Rotation number</term><term>Safety factor</term><term>Separatrix reconnection</term><term>Shearless</term><term>Shearless torus</term><term>Simulation</term><term>Small scale</term><term>Temperature gradient</term><term>Time scales</term><term>Tokamak</term><term>Torus</term><term>Turbulence</term><term>Vertical axis</term><term>Wave electron heating</term><term>Wave heating</term><term>Wide range</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Simulation</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Electron thermal fluxes are derived from the power balance for Tore Supra (TS) and NSTX discharges with centrally deposited fast wave electron heating. Measurements of the electron temperature and density profiles, combined with ray tracing computations of the power absorption profiles, allow detailed interpretation of the thermal flux versus temperature gradient. Evidence supporting the occurrence of electron temperature gradient turbulent transport in the two confinement devices is found. With control of the magnetic rotational transform profile and the heating power, internal transport barriers are created in TS and NSTX discharges. These partial transport barriers are argued to be a universal feature of transport equations in the presence of invariant tori that are intrinsic to non-monotonic rotational transforms in dynamical systems.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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