Steady-state fully noninductive current driven by electron cyclotron waves in a magnetically confined plasma

A steady-state, fully noninductive plasma current has been sustained for the first time in a tokamak using electron cyclotron current drive only. In this discharge, 123 kA of current have been sustained for the entire gyrotron pulse duration of 2 s. Careful distribution across the plasma minor radiu...

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Published in:Physical review letters 2000-04, Vol.84 (15), p.3322-3325
Main Authors: Sauter, O, Henderson, MA, Hofmann, F, Goodman, T, Alberti, S, Angioni, C, Appert, K, Behn, R, Blanchard, P, Bosshard, P, Chavan, R, Coda, S, Duval, BP, Fasel, D, Favre, A, Furno, I, I, Gorgerat, P, Hogge, J, Isoz, P, Joye, B, Lavanchy, P, Lister, JB, Llobet, X, Magnin, J, Mandrin, P, Manini, A
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cited_by cdi_FETCH-LOGICAL-c464t-941adc5e44a0fc1a187010103814b63e1d7a01c932569ac787cb89f2383171503
cites cdi_FETCH-LOGICAL-c464t-941adc5e44a0fc1a187010103814b63e1d7a01c932569ac787cb89f2383171503
container_end_page 3325
container_issue 15
container_start_page 3322
container_title Physical review letters
container_volume 84
creator Sauter, O
Henderson, MA
Hofmann, F
Goodman, T
Alberti, S
Angioni, C
Appert, K
Behn, R
Blanchard, P
Bosshard, P
Chavan, R
Coda, S
Duval, BP
Fasel, D
Favre, A
Furno, I, I
Gorgerat, P
Hogge, J
Isoz, P
Joye, B
Lavanchy, P
Lister, JB
Llobet, X
Magnin, J
Mandrin, P
Manini, A
description A steady-state, fully noninductive plasma current has been sustained for the first time in a tokamak using electron cyclotron current drive only. In this discharge, 123 kA of current have been sustained for the entire gyrotron pulse duration of 2 s. Careful distribution across the plasma minor radius of the power deposited from three 0. 5-MW gyrotrons was essential for reaching steady-state conditions. With central current drive, up to 153 kA of current have been fully replaced transiently for 100 ms. The noninductive scenario is confirmed by the ability to recharge the Ohmic transformer. The dependence of the current drive efficiency on the minor radius is also demonstrated.
doi_str_mv 10.1103/physrevlett.84.3322
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title Steady-state fully noninductive current driven by electron cyclotron waves in a magnetically confined plasma
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