Author/Authors :
Rapp، نويسنده , , J. and Matthews، نويسنده , , G.F. and Monier-Garbet، نويسنده , , P. and Sartori، نويسنده , , R. and Corre، نويسنده , , Y. and Eich، نويسنده , , T. and Felton، نويسنده , , R. and Fundamenski، نويسنده , , W. and Giroud، نويسنده , , C. Dumais-Huber، نويسنده , , A. and Jachmich، نويسنده , , S. E. MORGAN، نويسنده , , P. and O’Mullane، نويسنده , , M. and Koslowski، نويسنده , , H.R. and Stamp، نويسنده , , M. and contributo، نويسنده ,
Abstract :
As solution to the problems of transient and steady state energy exhaust the type-III ELMy H-mode is proposed. In recent experiments at JET it has been demonstrated that with seeding of nitrogen a radiative power fraction of 95% can be achieved, reducing the steady state and transient heat flux to acceptable values. Though the confinement of these discharges is reduced as well. Nevertheless, the ITER operational domain for Q = 10 does foresee operation at confinement enhancement factors of H98(y,2) ≈ 0.78 at higher plasma currents (Ip = 17 MA). It has been demonstrated at JET that an integrated scenario with type-III ELMs is feasible.
Keywords :
Elm , Impurity sources , ITER , JET , radiation , Divertor geometry , Divertor plasma , Energy confinement
