Analysis of high-field side plasma instabilities in tokamak edge
Balanced double-null configurations are of general interest for boundary plasma physics, and they have been proposed for some future designs. Experimental observations demonstrate absence of plasma fluctuations in tokamak high-field side scrape-off layer in a balanced double-null configuration [Smic...
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| Format | Journal Article |
| Language | English |
| Published |
18.09.2024
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| Subjects | |
| Online Access | Get full text |
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| Summary: | Balanced double-null configurations are of general interest for boundary
plasma physics, and they have been proposed for some future designs.
Experimental observations demonstrate absence of plasma fluctuations in tokamak
high-field side scrape-off layer in a balanced double-null configuration [Smick
et al 2013 Nucl. Fusion 53 023001], and it is commonly assumed that plasma
instabilities are suppressed on high-field side in the edge plasma due to the
stabilizing effect of magnetic curvature. At the same time, the experimental
evidence points to extremely steep plasma density profiles on high-field side,
which should provide a strong instability drive. In the present study, the
drift-resistive-ballooning mode instability model is investigated analytically
and numerically to determine the characteristics of plasma instabilities,
turbulence, and transport in tokamak scrape-off layer on high-field side. |
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| DOI: | 10.48550/arxiv.2409.12329 |