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Triangularity: Difference between revisions
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* ''R<sub>0</sub>'' is the major radius of the midpoint of the 2 intersections of the LCFS or separatrix with the equatorial plane (''Z'' = 0). | * ''R<sub>0</sub>'' is the major radius of the midpoint of the 2 intersections of the LCFS or separatrix with the equatorial plane (''Z'' = 0). | ||
* ''a'' is the minor radius of the plasma, defined as the radial difference between the 2 intersections of the LCFS or separatrix with the equatorial plane (''Z'' = 0), divided by 2. | * ''a'' is the minor radius of the plasma, defined as the radial difference between the 2 intersections of the LCFS or separatrix with the equatorial plane (''Z'' = 0), divided by 2. | ||
* ''R<sub>upper</sub>'' is the major radius | * ''R<sub>upper</sub>'' is the major radius of the highest vertical point of the LCFS. | ||
* ''R<sub>lower</sub>'' is the major radius | * ''R<sub>lower</sub>'' is the major radius of the lowest vertical point of the LCFS. | ||
The upper triangularity is then defined as follows: | The upper triangularity is then defined as follows: | ||
:<math> \delta_{upper} = (R_0-R_{upper})/a</math> | :<math> \delta_{upper} = (R_0-R_{upper})/a</math> | ||