An overview of results from the TCV tokamak
Goodman, T. P.; Ahmed, S. M.; Alberti, S.; Andrebe, Y.; Angioni, C.; Appert, K.; Arnoux, G.; Belm, R.; Blanchard, P.; Bosshard, P.; Camenen, Y.; Chavan, R.; Coda, S.; Condrea, I.; Degeling, A.; Duval, B. P.; Etienne, P.; Fasel, D.; Fasoli, A.; Favez, J. Y.; Furno, I.; Henderson, M.; Hofmann, F.; Hogge, J. P.; Horacek, J.; Isoz, P.; Joye, B.; Karpushov, A.; Klimanov, I.; Lavanchy, P.; Lister, J. B.; Llobet, X.; Magnin, J. C.; Manini, A.; Marletaz, B.; Marmillod, P.; Martin, Y.; Martynov, A.; Mayor, J. M.; Mlynar, J.; Moret, J. M.; Nelson-Melby, E.; Nikkola, P.; Paris, P. J.; Perez, A.; Peysson, Y.; Pitts, R. A.; Pochelon, A.; Porte, L.; Raju, D.; Reimerdes, H.; Sauter, O.; Scarabosio, A.; Scavino, E.; Seo, S. H.; Siravo, U.; Sushkov, A.; Tonetti, G.; Tran, M. Q.; Weisen, H.; Wischmeier, M.; Zabolotsky, A.; Zhuang, G.
2003

Abstract

The Tokamak Configuration Variable (TCV) tokamak (R = 0.88 m, a < 0.25 m, B < 1.54 T) programme is based on flexible plasma shaping and heating for studies of confinement, transport, control and power exhaust. Recent advances in fully sustained off-axis electron cyclotron current drive (ECCD) scenarios have allowed the creation of plasmas with high bootstrap fraction, steady-state reversed central shear and an electron internal transport barrier. High elongation plasmas, kappa = 2.5, are produced at low normalized current using far off-axis electron cyclotron heating and ECCD to broaden the current profile. Third harmonic heating is used to heat the plasma centre where the second harmonic is in cut-off. Both second and third harmonic heating are used to heat H-mode plasmas, at the edge and centre, respectively. The ELM frequency is decreased by the additional power. In separate experiments, the ELM frequency can be affected by locking to an external perturbation current in the internal coils of TCV. Spatially resolved current profiles are measured at the inner and outer divertor targets by Langmuir probe arrays during ELMs. The strong, reasonably balanced currents are thought to be thermoelectric in origin.

Details

Title An overview of results from the TCV tokamak
Author(s) Goodman, T. P. ; Ahmed, S. M. ; Alberti, S. ; Andrebe, Y. ; Angioni, C. ; Appert, K. ; Arnoux, G. ; Belm, R. ; Blanchard, P. ; Bosshard, P. ; Camenen, Y. ; Chavan, R. ; Coda, S. ; Condrea, I. ; Degeling, A. ; Duval, B. P. ; Etienne, P. ; Fasel, D. ; Fasoli, A. ; Favez, J. Y. ; Furno, I. ; Henderson, M. ; Hofmann, F. ; Hogge, J. P. ; Horacek, J. ; Isoz, P. ; Joye, B. ; Karpushov, A. ; Klimanov, I. ; Lavanchy, P. ; Lister, J. B. ; Llobet, X. ; Magnin, J. C. ; Manini, A. ; Marletaz, B. ; Marmillod, P. ; Martin, Y. ; Martynov, A. ; Mayor, J. M. ; Mlynar, J. ; Moret, J. M. ; Nelson-Melby, E. ; Nikkola, P. ; Paris, P. J. ; Perez, A. ; Peysson, Y. ; Pitts, R. A. ; Pochelon, A. ; Porte, L. ; Raju, D. ; Reimerdes, H. ; Sauter, O. ; Scarabosio, A. ; Scavino, E. ; Seo, S. H. ; Siravo, U. ; Sushkov, A. ; Tonetti, G. ; Tran, M. Q. ; Weisen, H. ; Wischmeier, M. ; Zabolotsky, A. ; Zhuang, G.
Published in Nuclear Fusion
Volume 43
Issue 12
Pages 1619-1631
Date 2003
ISSN 0029-5515
DOI https://doi.org/10.1088/0029-5515/43/12/008
Other identifier(s) View record in Web of Science
Laboratories CRPP
SPC
Record Appears in Scientific production and competences > SB - School of Basic Sciences > SPC - Swiss Plasma Center > SPC - Swiss Plasma Center
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2008-04-16

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