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Effective plasma radius: Difference between revisions
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E.g., at [[TJ-II]], magnetic equilibria can be obtained from the [[VMEC]] code (see [[TJ-II:Magnetic coordinates]]). It returns ''ψ'', the toroidal magnetic flux. The normalized effective radius is defined by | E.g., at [[TJ-II]], magnetic equilibria can be obtained from the [[VMEC]] code (see [[TJ-II:Magnetic coordinates]]). It returns ''ψ'', the toroidal magnetic flux. The normalized effective radius is defined by | ||
:<math>\rho_{\rm eff} = \sqrt{\psi_N}</math> | :<math>\rho_{\rm eff} = \sqrt{\psi_N}</math> | ||
where ''ψ<sub>N</sub>'' is the normalized toroidal flux, such that it is 0 on the magnetic axis and 1 at the Last Closed Flux Surface (LCFS). | where ''ψ<sub>N</sub>'' is the normalized toroidal flux, such that it is 0 on the magnetic axis and 1 at the Last Closed Flux Surface (LCFS). | ||