Return To: Session EXP4 - Current Drive, Heating, Fuelling, Divertors
Prev Page: (EXP4/01) Numerical Modelling of ICRF Physics Experiments in
Next Page: (EXP4/03) ECRF Experiments for Local Heating and Current

(EXP4/02) ECRH Experiments and Developments for Long Pulses in Tore Supra

G. Giruzzi¹⁾, C. Darbos¹⁾, R. Dumont¹⁾, R. Magne¹⁾, Y. Peysson¹⁾, X. L. Zou, F. Bouquey¹⁾, L. Courtois¹⁾, G. T. Hoang¹⁾, F. Imbeaux¹⁾, M. Lennholm¹⁾, X. Litaudon¹⁾, P. Moreau¹⁾, A. L. Pecquet¹⁾, J. L. Segui¹⁾, M. Zabiego¹⁾, and the TORE SUPRA Team^1)
 
1) Association EURATOM-CEA sur la Fusion, DEPARTEMENT DE RECHERCHES SUR LA FUSION CONTROLEE, CEA-Cadarache, 13108 St. Paul-lez-Durance (FRANCE)

Abstract.  The ECRH system presently under construction at CEA/Cadarache for the Tore Supra tokamak is described. The system will be equipped by 6 gyrotrons (118 GHz, 400 kW, cw), manufactured by Thomson Tubes Electroniques. The results of the tests of the prototype and of the first series gyrotron are reported and discussed. The best performance obtained was a pulse of 102 s at 310 kW average power on dummy load, which corresponds to the new record energy of 32 MJ. Results of first ECRH experiments on Tore Supra with the prototype gyrotron are also reported. 350 kW have been coupled in O-mode both to Ohmic and to LHCD plasmas in continuous or modulated pulses lasting up to 2 s. During non-inductive discharges, fully sustained by LHCD, a significant response of the hard X-ray signals to the ECRH power has been observed, despite the low power ratio between the two waves (0.35 MW EC / 4.5  MW LH waves).

Read the full paper in PDF format.