Status of and prospects for advanced tokamak regimes from multi-machine comparisons using the 'International Tokamak Physics Activity' database

X. Litaudon, E. Barbato, A. Bécoulet, E. J. Doyle, T. Fujita, P. Gohil, F. Imbeaux, O. Sauter, G. Sips, J. W. Connor, E. J. Doyle, Yu Esipchuk, T. Fujita, T. Fukuda, P. Gohil, J. Kinsey, N. Kirneva, S. Lebedev, X. Litaudon, V. MukhovatovJ. Rice, E. Synakowski, K. Toi, B. Unterberg, V. Vershkov, M. Wakatani, T. Aniel, Yu F. Baranov, E. Barbato, A. Bécoulet, R. Behn, C. Bourdelle, G. Bracco, R. V. Budny, P. Buratti, E. J. Doyle, Yu Esipchuk, B. Esposito, S. Ide, A. R. Field, T. Fujita, T. Fukuda, P. Gohil, C. Gormezano, C. Greenfield, M. Greenwald, T. S. Hahm, G. T. Hoang, J. Hobirk, D. Hogeweij, S. Ide, A. Isayama, F. Imbeaux, E. Joffrin, Y. Kamada, J. Kinsey, N. Kirneva, X. Litaudon, T. C. Luce, M. Murakami, V. Parail, Y. K.M. Peng, F. Ryter, Y. Sakamoto, H. Shirai, G. Sips, T. Suzuki, E. Synakowski, H. Takenaga, T. Takizuka, T. Tala, M. R. Wade, J. Weiland

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35 Scopus citations

Abstract

Various aspects of advanced tokamak regimes from multi-machine comparisons using the 'International Tokamak Physics Activity' database, were discussed. Advanced tokamak regimes obtained in ASDEX upgrade, DIII-D, FT-U, JET, TCV and Tore experiments were assessed both in terms of their fusion temperature and capability for ultimately reaching steady-state. These advanced modes were characterized by an improved core confinement and a modified current profile compared to the relaxed Ohmicaly driven one. A new operational diagram for advanced tokamak operation was proposed where the figure of merit characterizing the fusion performance and confinement, was drawn versus the fraction of the plasma current driven by the bootstrap effect.

Original languageEnglish
Pages (from-to)A19-A34
JournalPlasma Physics and Controlled Fusion
Volume46
Issue number5 SUPPL. A
DOIs
StatePublished - May 2004

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