Fast wave current drive scenarios for DEMO
2013 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 53, no 4, 043005- p.Article in journal (Refereed) Published
Scenarios for non-inductive current drive using the fast magnetosonic wave in the ion cyclotron range of frequencies in DEMO have been studied. The strong ion cyclotron damping and large Doppler broadening of the alpha particles are shown to limit the possible current drive scenarios to four frequency bands. However, these scenarios may be compromised in the presence of impurities with unfavourable charge to mass ratio. For each frequency the current drive efficiency is optimized with respect to the parallel wave number. The optimized current drive efficiencies are comparable to that from neutral beam injection and electron cyclotron heating, and thus the ion cyclotron range of frequencies should remain a candidate for driving the non-inductive current in DEMO.
Place, publisher, year, edition, pages
2013. Vol. 53, no 4, 043005- p.
DIII-D Tokamak, Plasmas, Absorption, Physics
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-119986DOI: 10.1088/0029-5515/53/4/043005ISI: 000316049300006ScopusID: 2-s2.0-84876117531OAI: oai:DiVA.org:kth-119986DiVA: diva2:613034
FunderSwedish Research Council, 621-2011-5387
QC 201303262013-03-262013-03-262013-04-11Bibliographically approved