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Ellipticity: Difference between revisions
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[[File:Geometry.png|400px|thumb|right|Sketch of tokamak geometry]] | [[File:Geometry.png|400px|thumb|right|Sketch of tokamak geometry]] | ||
The ellipticity refers to the shape of the poloidal cross section of the Last Closed [[Flux surface]] or [[separatrix]] of a [[tokamak]]. | The ellipticity (also referred to as elongation<ref name="Luce2013">T.C. Luce, [[doi:10.1088/0741-3335/55/9/095009|Plasma Phys. Control. Fusion '''55''' (2013) 095009 ]]</ref>) refers to the shape of the poloidal cross section of the Last Closed [[Flux surface]] or [[separatrix]] of a [[tokamak]]. | ||
Assuming<ref | Assuming<ref name="Luce2013" />: | ||
* ''R<sub>max</sub>'' is the maximum value of ''R'' along the LCFS or separatrix. | * ''R<sub>max</sub>'' is the maximum value of ''R'' along the LCFS or separatrix. | ||
* ''R<sub>min</sub>'' is the minimum value of ''R'' along the LCFS or separatrix. | * ''R<sub>min</sub>'' is the minimum value of ''R'' along the LCFS or separatrix. | ||