Magnetic islands and plasma rotation in the Tokamak Chauffage Alfven Bresilien tokamak
2004 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 11, no 2, 846-848 p.Article in journal (Refereed) Published
Collisional plasma rotation in the Tokamak Chauffage Alfven Bresilien (TCABR) tokamak [J. H. F. Severo, I. C. Nascimento, V. S. Tsypin, and R. M. O. Galvao, Nucl. Fusion 43, 1047 (2003)] has been experimentally studied. It was found that the measured plasma poloidal rotation velocity agrees within error limits with neoclassical theoretical predictions, and toroidal velocity with experimental results obtained in analogous tokamaks, almost everywhere along the minor radius r, except for measurements at r/asimilar or equal to0.56 and r/asimilar or equal to0.89 (the minor radius of TCABR tokamak a=18 cm). For the first point, the measured plasma rotation velocities are higher than the velocity of the background plasma, respectively similar to30% and similar to10% for the poloidal and toroidal rotation velocities. Using a set of 22 Mirnov coils displaced poloidally, magnetic field perturbations were measured in shots adjusted to reproduce the ones of the previous plasma rotation measurements, and the results confirm that in the region r/asimilar or equal to0.89 the plasma rotates together with the magnetic island (3,1).
Place, publisher, year, edition, pages
2004. Vol. 11, no 2, 846-848 p.
toroidal rotation, hyperviscosity, confinement, transport, limits
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-23102DOI: 10.1063/1.1637919ISI: 000188282100039ScopusID: 2-s2.0-1242287452OAI: oai:DiVA.org:kth-23102DiVA: diva2:341800
QC 20100525 QC 201110312010-08-102010-08-102014-12-15Bibliographically approved