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  Recent results from the electron cyclotron heated plasmas in Tokamak à Configuration Variable (TCV)

Henderson, M. A., Alberti, S., Angioni, C., Arnoux, G., Behn, R., Blanchard, P., et al. (2003). Recent results from the electron cyclotron heated plasmas in Tokamak à Configuration Variable (TCV). Physics of Plasmas, 10(5), 1796-1802. doi:10.1063/1.1562167.

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Henderson, M. A.1, Author
Alberti, S.1, Author
Angioni, C.2, Author           
Arnoux, G.1, Author
Behn, R.1, Author
Blanchard, P.1, Author
Bosshard, P.1, Author
Camenen, Y.1, Author
Coda, S.1, Author
Condrea, I.1, Author
Goodman, T. P.1, Author
Hofmann, F.1, Author
Hogge, J.-Ph.1, Author
Karpushov, A.1, Author
Manini, A.3, Author           
Martynov, A.1, Author
Moret, J.-M.1, Author
Nikkola, P.1, Author
Nelson-Melby, E.1, Author
Pochelon, A.1, Author
Porte, L.1, AuthorSauter, O.1, AuthorAhmed, S. M.1, AuthorAndrèbe, Y.1, AuthorAppert, K.1, AuthorChavan, R.1, AuthorDegeling, A.1, AuthorDuval, B. P.1, AuthorEtienne, P.1, AuthorFasel, D.1, AuthorFasoli, A.1, AuthorFavez, J.-Y.1, AuthorFurno, I.1, AuthorHoracek, J.1, AuthorIsoz, P.1, AuthorJoye, B.1, AuthorKlimanov, I.1, AuthorLavanchy, P.1, AuthorLister, J. B.1, AuthorLlobet, X.1, AuthorMagnin, J.-C.1, AuthorMarlétaz, B.1, AuthorMarmillod, P.1, AuthorMartin, Y.1, AuthorMayor, J.-M.1, AuthorMylnar, J.1, AuthorParis, P. J.1, AuthorPerez, A.1, AuthorPeysson, Y.1, AuthorPitts, R. A.1, AuthorRaju, D.1, AuthorReimerdes, H.1, AuthorScarabosio, A.4, Author           Scavino, E.1, AuthorSeo, S. H.1, AuthorSiravo, U.1, AuthorSushkov, A.1, AuthorTonetti, G.1, AuthorTran, M. Q.1, AuthorWeisen, H.1, AuthorWischmeier, M.2, Author           Zabolotsky, A.1, AuthorYhuang, G.1, Author more..
1CRPP-EPFL, Association EURATOM-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Los Alamos National Laboratory, Los Alamos, New Mexico; DRFC-CEA Cadarche, France; Institute for Plasma Research, Bhat, Gandhinagar-382 428, Gujarat, India; General Atomics, San Diego, California; RRC Kurchatov, Moscow, Russia, ou_persistent22              
2Tokamak Theory (TOK), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856309              
3Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856295              
4External Organizations, ou_persistent22              


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 Abstract: In noninductively driven discharges, 0.9 MW second harmonic (X2) off-axis co-electron cyclotron current drive deposition is combined with 0.45 MW X2 central heating to create an electron internal transport barrier (eITB) in steady plasma conditions resulting in a 1.6-fold increase of the confinement time (τEe) over ITER-98L-mode scaling. The eITB is associated with a reversed shear current profile enhanced by a large bootstrap current fraction (up to 80%) and is sustained for up to 10 current redistribution times. A linear dependence of the confinement improvement on the product of the global shear reversal factor (q₀/qmin) and the reversed shear volume (ρ²qmin) is shown. In other discharges heated with X2 the sawteeth are destabilized (respectively stabilized) when heating just inside (respectively outside) the q = 1 surface. Control of the sawteeth may allow the avoidance of neoclassical tearing modes that can be seeded by the sawtooth instability. Results on H-mode and highly elongated plasmas using the newly completed third harmonic (X3) system and achieving up to 100% absorption are also discussed, along with comparison of experimental results with the TORAY-GA ray tracing code [K. Matsuda, IEEE Trans. Plasma Sci. PS-17, 6 (1989); R. H. Cohen, Phys. Fluids 30, 2442 (1987)].


Language(s): eng - English
 Dates: 2003
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
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Title: Physics of Plasmas
  Alternative Title : Phys. Plasmas
Source Genre: Journal
Publ. Info: Copyright © 2003 American Institute of Physics
Pages: - Volume / Issue: 10 (5) Sequence Number: - Start / End Page: 1796 - 1802 Identifier: -