Destabilization of fast-ion-induced long sawteeth by localized current drive in the JET tokamak.
2004 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 92, no 23Article in journal (Refereed) Published
In a tokamak fusion reactor the energetic alpha particles will transiently stabilize the magnetohydrodynamic activity causing sawtooth oscillations. The crash events terminating long sawtooth free periods can provide seed islands for neoclassical tearing modes [Phys. Rev. Lett. 88, 105001 (2002)]]. To shorten the sawtooth periods localized current drive near the q=1 surface is a possibility. This Letter provides the first experimental evidence for the effectiveness of this method in the different physics regime associated with fast-ion-induced long sawteeth on the JET tokamak.
Place, publisher, year, edition, pages
2004. Vol. 92, no 23
Other Engineering and Technologies
IdentifiersURN: urn:nbn:se:kth:diva-13593DOI: 10.1103/PhysRevLett.92.235004ISI: 000221961900023PubMedID: 15245165ScopusID: 2-s2.0-3242727020OAI: oai:DiVA.org:kth-13593DiVA: diva2:326147
QC 201006222010-06-222010-06-222013-12-04Bibliographically approved