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Beta: Difference between revisions
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== Normalized beta == | == Normalized beta == | ||
The normalized beta is an operational parameter indicating how close the plasma is to reaching the [[Greenwald limit]]. Its definition is (for tokamaks): | The normalized beta (or Troyon factor) is an operational parameter indicating how close the plasma is to reaching the [[Greenwald limit]]. Its definition is (for tokamaks): | ||
<ref>K. Miyamoto, ''Plasma Physics and Controlled Nuclear Fusion'', Springer-Verlag (2005) ISBN 3540242171</ref> | |||
:<math>\beta_N = \beta \frac{a B}{I_p}</math> | :<math>\beta_N = \beta \frac{a B}{I_p}</math> | ||