Home / Store / Journals / Electronic Articles / Fusion Science and Technology / Volume 63 / Number 1 / Pages 43-48
Karl Lackner, Hartmut Zohm
Fusion Science and Technology / Volume 63 / Number 1 / Pages 43-48
Format:electronic copy (download)
Tokamak equilibria with a snowflake divertor configuration are studied using a wire current model in toroidal geometry. A set of conditions for the formation of a snowflake divertor that can also be applied in full equilibrium calculations using a Grad-Shafranov solver is presented. It is shown that by taking into account the vertical force balance of the plasma, previously obtained results using a simple wire model have to be corrected. For a reactor-type device with coils far away from the plasma to accommodate the shielding requirements, the poloidal field coil currents become so high that they will represent a major technological challenge.
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