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Separatrix: Difference between revisions
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In the fusion context, the term refers to the trajectories of the magnetic field lines and is used to describe: | In the fusion context, the term refers to the trajectories of the magnetic field lines and is used to describe: | ||
* | * In the case of a [[Divertor|divertor]] configuration in [[Tokamak|tokamaks]], or a similar situation in other devices: the boundary between closed and open field lines, separating the toroidally confined region from the region where field lines connect to material surfaces. | ||
* The boundary between the inside of a magnetic island and the surrounding region. | * The boundary between the inside of a magnetic island and the surrounding region. | ||
In the case of plasmas that are limited by material objects (limiters or walls), | In the case of plasmas that are limited by material objects (limiters or walls), | ||
the use of the term separatrix to describe the boundary between the confined plasma and | |||
the external part of the plasma that connects to the wall (the Scrape-Off Layer, SOL). | the external part of the plasma that connects to the wall (the Scrape-Off Layer, SOL) is not correct. | ||
In this case, | In this case, the boundary should be referred to as the Last Closed Magnetic Surface (LCMS) or Last Closed Flux Surface (LCFS). | ||
== See also == | == See also == | ||