Total fluid pressure imbalance in the scrape-off layer of 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...
متن کاملInteraction of scrape-off layer currents with magnetohydrodynamical instabilities in tokamak plasmas
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. ...
متن کاملSimulation of the scrape-off layer region of tokamak devices
Understanding the key processes occurring in the tokamak scrape-off layer (SOL) is becoming of the outmost importance while we enter the ITER era and we move towards the conception of future fusion reactors. By controlling the heat exhaust, by playing an important role in determining the overall plasma confinement, and by regulating the impurity level in tokamak core, the dynamics of the fusion...
متن کاملTurbulent regimes in the tokamak Scrape-Off layer
◮ We study Scrape-Off Layer (SOL) turbulence through simulations that evolve the plasma dynamics as the interplay of plasma source from the core, perpendicular transport, and losses at the limiter plates ◮ We identify the SOL turbulence regimes, defining the regions of existence of the Ballooning Modes [resistive (RBM) and inertial (IBM)] and the Drift Waves [resistive (RDW) and inertial (IDW)]...
متن کاملThe GBS code for tokamak scrape-off layer simulations
Article history: Received 5 October 2015 Received in revised form 10 March 2016 Accepted 18 March 2016 Available online 24 March 2016
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ژورنال
عنوان ژورنال: Nuclear Fusion
سال: 2017
ISSN: 0029-5515,1741-4326
DOI: 10.1088/1741-4326/aa5fb1