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Experimental Studies of Magnetic Islands, Configurations and Plasma Confinement in the H-1NF Heliac

Kumar, Santhosh Tekke Athayil

Description

Rational magnetic flux surfaces in fusion (toroidal plasma confinement) devices can break the magnetic field lines and reconnect them in the form of magnetic islands. Formation of these magnetic islands can have a serious impact on the plasma confinement properties of the device. Islands can in general degrade the confinement by mixing up different regions of the plasma. However there has been experimental evidence of confinement improvement by island induced transport barriers, under certain...[Show more]

dc.contributor.authorKumar, Santhosh Tekke Athayil
dc.date.accessioned2010-02-22T03:37:15Z
dc.date.accessioned2011-01-04T02:35:20Z
dc.date.available2010-02-22T03:37:15Z
dc.date.available2011-01-04T02:35:20Z
dc.identifier.otherb2353459x
dc.identifier.urihttp://hdl.handle.net/1885/49287
dc.description.abstractRational magnetic flux surfaces in fusion (toroidal plasma confinement) devices can break the magnetic field lines and reconnect them in the form of magnetic islands. Formation of these magnetic islands can have a serious impact on the plasma confinement properties of the device. Islands can in general degrade the confinement by mixing up different regions of the plasma. However there has been experimental evidence of confinement improvement by island induced transport barriers, under certain conditions. Even though there are a large number of theoretical and experimental works on magnetic islands to date, there is clearly a paucity of convincing experimental understanding on the nature of behaviour of islands in plasma. This thesis reports detailed experimental studies conducted on the H-1NF heliac stellarator, to gain an in-depth understanding of magnetic islands and their influence in plasma confinement. ¶ ...
dc.language.isoen
dc.rights.uriThe Australian National University
dc.subjectMagnetic Islands
dc.subjectWire Tomography
dc.subjectRadial Electric Field
dc.subjectCore Electron-Root
dc.titleExperimental Studies of Magnetic Islands, Configurations and Plasma Confinement in the H-1NF Heliac
dc.typeThesis (PhD)
dcterms.valid2008
local.description.refereedyes
local.type.degreeDoctor of Philosophy (PhD)
dc.date.issued2007
local.contributor.affiliationPlasma Research Laboratory, Research School of Physical Sciences and Engineering
local.contributor.affiliationThe Australian National University
local.identifier.doi10.25911/5d7a2c50b3adf
local.mintdoimint
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