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Kinetic damping of resistive wall modes in ITER
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2012 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 19, no 5, 052502- p.Article in journal (Refereed) Published
Abstract [en]

Full drift kinetic modelling including finite orbit width effects has been used to assess the passive stabilisation of the resistive wall mode (RWM) that can be expected in the ITER advanced scenario. At realistic plasma rotation frequency, the thermal ions have a stabilising effect on the RWM, but the stability limit remains below the target plasma pressure to achieve Q = 5. However, the inclusion of damping arising from the fusion-born alpha particles, the NBI ions, and ICRH fast ions extends the RWM stability limit above the target beta for the advanced scenario. The fast ion damping arises primarily from finite orbit width effects and is not due to resonance between the particle frequencies and the instability.

Place, publisher, year, edition, pages
2012. Vol. 19, no 5, 052502- p.
Keyword [en]
Damping, Fusion reactions, Ions, Kinetic theory, Plasma stability
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-100175DOI: 10.1063/1.4714877ISI: 000304831100017Scopus ID: 2-s2.0-84862122510OAI: oai:DiVA.org:kth-100175DiVA: diva2:542937
Note
QC 20120806Available from: 2012-08-06 Created: 2012-08-06 Last updated: 2017-12-07Bibliographically approved

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Johnson, Thomas

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