Stationary density profiles in the Alcator C-mod tokamak

Kesner, J.; Ernst, D. R.; Hughes, J.W.; Mumgaard, R.; Scott, Steve; Shiraiwa, S.; Whyte, D.G.

doi:10.1063/1.4773215

Cited by 1 publication

(1 citation statement)

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“…However, it has been observed in many existing devices that the density radial distribution could have a centrally peaked profile even in the case of fueling only in the edge. [8][9][10][11][12] To explain this phenomenon, the concept of particle pinch has been proposed. [10][11][12][13][14][15][16] Here, particle pinch means a convective component in the particle flux which could transfer the particle from edge to the core region.…”

Section: Introductionmentioning

confidence: 99%

Effect of particle pinch on the fusion performance and profile features of an international thermonuclear experimental reactor-like fusion reactor

(王时佳)

Wang

2015

Physics of Plasmas

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The evolution of the plasma temperature and density in an international thermonuclear experimental reactor (ITER)-like fusion device has been studied by numerically solving the energy transport equation coupled with the particle transport equation. The effect of particle pinch, which depends on the magnetic curvature and the safety factor, has been taken into account. The plasma is primarily heated by the alpha particles which are produced by the deuterium-tritium fusion reactions. A semi-empirical method, which adopts the ITERH-98P(y,2) scaling law, has been used to evaluate the transport coefficients. The fusion performances (the fusion energy gain factor, Q) similar to the ITER inductive scenario and non-inductive scenario (with reversed magnetic shear) are obtained. It is shown that the particle pinch has significant effects on the fusion performance and profiles of a fusion reactor. When the volume-averaged density is fixed, particle pinch can lower the pedestal density by $30%, with the Q value and the central pressure almost unchanged. When the particle source or the pedestal density is fixed, the particle pinch can significantly enhance the Q value by 60%, with the central pressure also significantly raised. V C 2015 AIP Publishing LLC. [http://dx.

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