Change search
ReferencesLink to record
Permanent link

Direct link
Overview of physics results from MAST
Show others and affiliations
2007 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 47, no 10, S658-S667 p.Article in journal (Refereed) Published
Abstract [en]

Substantial advances have been made on the Mega AmpÚre Spherical Tokamak (MAST). The parameter range of the MAST confinement database has been extended and it now also includes pellet-fuelled discharges. Good pellet retention has been observed in H-mode discharges without triggering an ELM or an H/L transition during peripheral ablation of low speed pellets. Co-ordinated studies on MAST and DIII-D demonstrate a strong link between the aspect ratio and the beta scaling of H-mode energy confinement, consistent with that obtained when MAST data were merged with a subset of the ITPA database. Electron and ion ITBs are readily formed and their evolution has been investigated. Electron and ion thermal diffusivities have been reduced to values close to the ion neoclassical level. Error field correction coils have been used to determine the locked mode threshold scaling which is comparable to that in conventional aspect ratio tokamaks. The impact of plasma rotation on sawteeth has been investigated and the results have been well-modelled using the MISHKA-F code. Alfvén cascades have been observed in discharges with reversed magnetic shear. Measurements during off-axis NBCD and heating are consistent with classical fast ion modelling and indicate efficient heating and significant driven current. Central electron Bernstein wave heating has been observed via the O-X-B mode conversion process in special magnetically compressed plasmas. Plasmas with low pedestal collisionality have been established and further insight has been gained into the characteristics of filamentary structures at the plasma edge. Complex behaviour of the divertor power loading during plasma disruptions has been revealed by high resolution infra-red measurements.

Place, publisher, year, edition, pages
2007. Vol. 47, no 10, S658-S667 p.
Keyword [en]
Aspect ratio, Database systems, Fusion reactor divertors, Nuclear energy, Plasma collision processes, Plasma confinement, Thermal diffusivity, Bernstein wave heating, Magnetic shear, Plasma disruptions, Tokamak devices
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-32399DOI: 10.1088/0029-5515/47/10/S14ISI: 000250610100015ScopusID: 2-s2.0-34748835464OAI: diva2:410509
QC 20110414 ISI anger titeln som "Overview MAST" Har ingått i: 21st IAEA Fusion Energy Conference, Chengdu, PEOPLES R CHINA, OCT 16-21, 2006Available from: 2011-04-14 Created: 2011-04-14 Last updated: 2011-04-14Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Kuldkepp, MattiasRachlew, Elisabeth
By organisation
Atomic and Molecular Physics
In the same journal
Nuclear Fusion
Physical Sciences

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: 53 hits
ReferencesLink to record
Permanent link

Direct link