Theory of the scrape-off layer width in inner-wall limited tokamak plasmas
نویسندگان
چکیده
منابع مشابه
Theory of the scrape-off layer width in inner-wall limited tokamak plasmas
We develop a predictive theory applicable to the scrape-off layer (SOL) of inner-wall limited plasmas. Using the non-linear flattening of the pressure profile as a saturation mechanism for resistive ballooning modes, we are able to demonstrate and quantify the increase of the SOL width with plasma size, connection length, plasma β, and collisionality. Individual aspects of the theory, such as s...
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The International Tokamak Physics Activity Topical Group on scrape-off layer and divertor physics has amassed a database comprising hundreds of reciprocating Langmuir probe measurements of the main scrape-off layer heat-flux width λq in inner-wall limited discharges. We have carried out an analysis, based on turbulent transport theory, of the variation of λq with respect to the dimensionless pl...
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A simple theoretical model is developed which describes how current eddies are excited in the scrape-off layer SOL of a large-aspect-ratio, low, circular cross-section tokamak by time-varying magnetohydrodynamical instabilities originating from within the plasma. This model is used to study the interaction of SOL currents with tearing modes and resistive wall modes in a typical tokamak plasma. ...
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ژورنال
عنوان ژورنال: Nuclear Fusion
سال: 2014
ISSN: 0029-5515,1741-4326
DOI: 10.1088/0029-5515/54/4/043003