Change search
ReferencesLink to record
Permanent link

Direct link
On ion cyclotron current drive for sawtooth control
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.ORCID iD: 0000-0002-7142-7103
Show others and affiliations
2006 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 46, no 10, S951-S964 p.Article in journal (Refereed) Published
Abstract [en]

Experiments using ion cyclotron current drive (ICCD) to control sawteeth are presented. In particular, discharges demonstrating shortening of fast ion induced long sawteeth reported in (Eriksson et al 2004 Phys. Rev. Lett. 92 235004) by ICCD have been analysed in detail. Numerical simulations of the ICCD driven currents are shown to be consistent with the experimental observations. They support the hypothesis that an increase in the magnetic shear, due to the driven current, at the surface where the safety factor is unity was the critical factor for the shortening of the sawteeth. In view of the potential utility of ICCD, the mechanisms for the current drive have been further investigated experimentally. This includes the influence of the averaged energy of the resonating ions carrying the current and the spectrum of the launched waves. The results of these experiments are discussed in the light of theoretical considerations.

Place, publisher, year, edition, pages
2006. Vol. 46, no 10, S951-S964 p.
Keyword [en]
toroidal plasmas, jet, waves, tokamak, physics, period
National Category
Fusion, Plasma and Space Physics
URN: urn:nbn:se:kth:diva-16126DOI: 10.1088/0029-5515/46/10/S12ISI: 000242004100012ScopusID: 2-s2.0-33749068424OAI: diva2:334168
QC 20100525 QC 20110927. Conference: 9th IAEA Technical Meeting on Energetic Particles in Magnetic Confinements Systems. Takayama, JAPAN. NOV 09-11, 2005 Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-09-28Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Johnson, Thomas J.Hellsten, Torbjörn A. K.
By organisation
Fusion Plasma Physics
In the same journal
Nuclear Fusion
Fusion, Plasma and Space Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 33 hits
ReferencesLink to record
Permanent link

Direct link