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The toroidal field (TF) ripple loss of alphas below the critical energy (including axisymmetric neoclassical loss) is calculated for a non-circular ITER plasma. For 14 TF coils, the particle loss was found to be about 6%. About 0.6% of the initial alpha energy (3.5 MeV) is lost.
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Hively et al. (1990) studied this question.
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