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dc.contributor.authorLópez-Bruna, D.
dc.contributor.authorRomero, J.
dc.contributor.authorVargas-Blanco, Iván
dc.description.abstractThe TJ-II stellarator is a mid-size Heliac design (high rotational transform, low magnetic shear) that allows for external control of the rotational transform profile. The long experience with locating diverse magnetic resonances at different plasma radii has assessed their reliability as transport controllers: in low density electron cyclotron heating plasmas, a "transport barrier effect" is found in most of the confinement zone accompanying magnetic resonances; in higher density and beta plasmas under neutral-beam heating operation, resonant layers show a clear incidence on the access to the H-mode of confinement or, likewise, on the back transition to L-mode. Moreover, confinement events similar to tokamak phenomenology have been also related with magneto-hydrodynamic activity around the magnetic resonances and are, consequently, amenable to external control. All in all, the TJ-II experience posits magnetic resonances as natural transport and stability controllers in toroidal plasmas. Further studies must either confirm or set operational limits to these
dc.description.sponsorshipAd Astra Rocket Company,Instituto Tecnologico de Costa Rica,International Atomic Energy Agency (IAEA),Universidad Nacional de Costa Ricaes
dc.publisherInstitute of Physics Publishinges
dc.rightsAttribution-NonCommercial 3.0 Costa Rica*
dc.sourceJournal of Physics: Conference Series, Volume 591, conference 1es
dc.subjectResonancia magnéticaes
dc.subjectResearch Subject Categories::TECHNOLOGY::Engineering physics::Plasma physics with fusiones
dc.titleAre magnetic resonances practical transport controllers in fusion plasmas? the TJ-II experiencees

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Except where otherwise noted, this item's license is described as Attribution-NonCommercial 3.0 Costa Rica