Multi-megawatt, gigajoule plasma operation in Tore Supra
Artikel i vetenskaplig tidskrift, 2014

Integrating several important technological elements required for long pulse operation in magnetic fusion devices, the Tore Supra tokamak routinely addresses the physics and technology issues related to this endeavor and, as a result, contributes essential information on critical issues for ITER. During the last experimental campaign, components of the radiofrequency system including an ITER relevant launcher (passive active multijunction (PAM)) and continuous wave/3.7 GHz klystrons, have been extensively qualified, and then used to develop steady state scenarios in which the lower hybrid (LH), ion cyclotron (IC) and electron cyclotron (EC) systems have been combined in fully stationary shots (duration similar to 150 s, injected power up to similar to 8MW, injected/extracted energy up to similar to 1 GJ). Injection of LH power in the 5.0-6.0MW range has extended the domain of accessible plasma parameters to higher densities and non-inductive currents. These discharges exhibit steady electron internal transport barriers (ITBs). We report here on various issues relevant to the steady state operation of future devices, ranging from operational aspects and limitations related to the achievement of long pulses in a fully actively cooled fusion device (e. g. overheating due to fast particle losses), to more fundamental plasma physics topics. The latter include a beneficial influence of IC resonance heating on the magnetohydrodynamic (MHD) stability in these discharges, which has been studied in detail. Another interesting observation is the appearance of oscillations of the central temperature with typical periods of the order of one to several seconds, caused by a nonlinear interplay between LH deposition, MHD activity and bootstrap current in the presence of an ITB.

RIPPLE

Physics

Fluids & Plasmas

MHD

1991

GERMANY

TOKAMAK

CONFINEMENT

V33

Nuclear

tokamak

JUN 03-07

ANTENNAS

ICRH

POWER

P1601

1991

RCELLI F

STEADY-STATE

lower hybrid

MHD

BERLIN

Physics

steady-state

gigajoule

PLASMA PHYSICS AND CONTROLLED FUSION18TH EUROPEAN CONF ON CONTROLLED FUSION AND PLASMA PHYSICS

Tore Supra

Författare

R. J. Dumont

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

M. Goniche

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

Annika Ekedahl

Chalmers, Teknisk fysik, Nukleär teknik

B. Saoutic

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

J. F. Artaud

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

V. Basiuk

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

C. Bourdelle

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

Y. Corre

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

J. Decker

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

D. Elbeze

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

G. Giruzzi

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

G. T. Hoang

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

F. Imbeaux

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

E. Joffrin

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

X. Litaudon

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

P. Lotte

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

P. Maget

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

D. Mazon

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

Emelie Nilsson

Chalmers, Teknisk fysik, Nukleär teknik

Plasma Physics and Controlled Fusion

0741-3335 (ISSN) 1361-6587 (eISSN)

Vol. 56 7

Ämneskategorier

Fusion, plasma och rymdfysik

DOI

10.1088/0741-3335/56/7/075020

Mer information

Senast uppdaterat

2018-04-11