JET quasistationary internal-transport-barrier operation with active control of 
the pressure profile

Crisanti, F.; Litaudon, X.; Mailloux, J.; Mazon, D.; Barbato, E.; Baranov, Y.; Becoulet, A.; Becoulet, M.; Challis, C. D.; Conway, G. D.; Dux, R.; Eriksson, L. G.; Esposito, B.; Frigione, D.; Hennequin, P.; Giroud, C.; Hawkes, N.; Huysmans, G.; Imbeaux, F.; Joffrin, E.; Lomas, P.; Lotte, P.; Maget, P.; Mantsinen, M.; Moreau, D.; Rimini, F.; Riva, M.; Sarazin, Y.; Tresset, G.; Tuccillo, A. A.; Zastrow, K. D.

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JET quasistationary internal-transport-barrier operation with active control of the pressure profile

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Conway, G. D.
Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society;

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Dux, R.
Experimental Plasma Physics 4 (E4), Max Planck Institute for Plasma Physics, Max Planck Society;

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Zastrow, K. D.
Experimental Plasma Physics 4 (E4), Max Planck Institute for Plasma Physics, Max Planck Society;

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Citation

Crisanti, F., Litaudon, X., Mailloux, J., Mazon, D., Barbato, E., Baranov, Y., et al. (2002). JET quasistationary internal-transport-barrier operation with active control of the pressure profile. Physical Review Letters, 88(14): 145004.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0027-4136-C

Abstract

Quasistationary operation has been achieved on the Joint European Torus tokamak in internal-transport-barrier (ITB) scenarios, with the discharge time limited only by plant constraints. Full current drive was obtained over all the high performance phase by using lower hybrid current drive. For the first time feedback control on the total pressure and on the electron temperature pro le was implemented by using, respectively, the neutral beams and the ion-cyclotron waves. Although impurity accumulation could be a problem in steady state ITBs, these experiments bring some elements to answer to it.