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>

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