Structure of Global Tokamak Scalings

Yu. N. Dnestrovskij

Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute,
pl. Kurchatova 1, Moscow, 123182 Russia

Received April 26, 2001; in final form, August 26, 2001

Abstract—In empirical tokamak scalings, not all of the standard engineering parameters are independent.
Thus, the larger the tokamak, the higher the required plasma current and input power. Also, by using higher
magnetic fields, it is possible to raise the plasma density. Instead of the plasma density, plasma current, and
input power, it is proposed to use such combinations of engineering parameters whose values are essentially the
same for different tokamaks. With this approach, the number of free scaling parameters can be reduced from
six to three, thereby improving the reliability of the scaling. © 2002 MAIK “Nauka/Interperiodica”.

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