000120071 001__ 120071
000120071 005__ 20190102122027.0
000120071 0247_ $$2doi$$a10.1088/0741-3335/46/7/S05
000120071 022__ $$a0741-3335
000120071 02470 $$2DAR$$a5503
000120071 02470 $$2ISI$$a000223135400006
000120071 037__ $$aARTICLE
000120071 245__ $$aAlfven mode stability and wave-particle interaction in the JET tokamak: prospects for scenario development and control schemes in burning plasma experiments
000120071 260__ $$c2004
000120071 269__ $$a2004
000120071 336__ $$aJournal Articles
000120071 520__ $$aWe have investigated the effect of different ion cyclotron resonance frequency (ICRF) heating schemes, of error field modes, of the plasma shape and edge magnetic shear, and of the ion delB drift direction on the stability of Alfven eigenmodes (AEs). The use of multi-frequency or 2nd harmonic minority ICRF heating at high plasma density gives rise to a lower fast ion pressure gradient in the plasma core and to a reduced mode activity in the Alfven frequency range. Externally excited low-amplitude error fields lead to a much larger AE instability threshold, which we attribute to a moderate radial redistribution of the fast ions. The edge plasma shape has a clear stabilizing effect on high-n, radially localized AEs. The damping rate of n = 1 toroidal AEs is a factor 3 higher when the ion VB drift is directed towards the divertor. These results represent a useful step towards the extrapolation of current scenarios to the inclusion of fusion-born alpha particles in ITER, with possible application for feedback control schemes for the various ITER operating regimes.
000120071 6531_ $$aJET
000120071 6531_ $$aITER
000120071 700__ $$0240814$$aTesta, D.$$g153200
000120071 700__ $$0240112$$aFasoli, A.$$g105078
000120071 700__ $$aBorba, D.
000120071 700__ $$ade Baar, M.
000120071 700__ $$aBigi, M.
000120071 700__ $$aBrzozowski, J.
000120071 700__ $$ade Vries, P.
000120071 773__ $$j46$$k7$$qS59-S79$$tPlasma Physics and Controlled Fusion
000120071 909C0 $$pCRPP
000120071 909C0 $$0252028$$pSPC
000120071 909CO $$ooai:infoscience.tind.io:120071$$pSB$$particle
000120071 937__ $$aCRPP-ARTICLE-2004-016
000120071 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000120071 980__ $$aARTICLE