Transport and MHD studies at high T

S. Cirant, A. Airoldi, L. Bertalot, G. Bracco, A. Bruschi, P. Buratti, G. Cenacchi, R. Coelho, F. Crisanti, B. Esposito, L. Gabellieri, F. Gandini, G. Granucci, E. Lazzaro, H. Krögler, S. Nowak, D. Pacella, L. Panaccione, G. Ramponi, A. SimonettoC. Sozzi, O. Tudisco, M. Zerbini, F. Alladio, B. Angelini, M.L. Apicella, G. Apruzzese, E. Barbato, A. Bertocchi, M. Borra, G. Buceti, A. Cardinali, C. Centioli, R. Cesarioi, P. Chuilon, S. Ciattaglia, V. Cocilovo, R. De Angelis, D. Frigione, G. Gatti, E. Giovannozzi, M. Grolli, F. Iannone, M. Leigheb, G. Maddaluno, M. Marinucci, G. Mazzitelli, P. Micozzi, P. Orsitto, M. Panella, V. Pericoli, L. Pieroni, S. Podda, G.B. Righetti, F. Romanelli, S.E. Segre, S. Sternini, N. Tartoni, A.A. Tuccillo, V. Vitale, G. Vlad, V. Zanza, F. Zonca

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Abstract

Magnetohydrodynamic (MHD) activity and energy transport at rational-q surfaces is analysed on the basis of experimental results on current density profile control obtained with localized electron cyclotron resonance heating (ECRH) on FTU tokamak. The MHD response, in particular 2/1 and 1/1 modes, to ECRH is in agreement with expectations from a theoretical model including resistive wall braking and toroidal mode coupling. It is also shown that the magnetic shear at rq=1could control m = 1 mode saturation and magnetic reconnection. Heating results with ECRH at steady state indicate that transport enhancement is the dominant effect on confinement at the q = 2 surface, and suggest that conduction and convection inside the asymmetric m = 1 island should both be taken into account for a proper description of the thermal response to localized ECRH. © 1999 IOP Publishing Ltd.
Original languageEnglish
Pages (from-to)-
JournalPlasma Physics and Controlled Fusion
Volume41
Issue numberSUPPL. 12B
DOIs
Publication statusPublished - 1999

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All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Cirant, S., Airoldi, A., Bertalot, L., Bracco, G., Bruschi, A., Buratti, P., ... Zonca, F. (1999). Transport and MHD studies at high T. Plasma Physics and Controlled Fusion, 41(SUPPL. 12B), -. https://doi.org/10.1088/0741-3335/41/12B/326