Diamagnetic drift stabilized ballooning modes in a 3D heliotron

D. Barmaz; W. A. Cooper; B. F. McMillan; R. L. Dewar

doi:10.1088/0741-3335/54/1/014006

Diamagnetic drift stabilized ballooning modes in a 3D heliotron

D. Barmaz^*, W. A. Cooper, B. F. McMillan, R. L. Dewar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

An analysis of kinetic ballooning modes is presented, ray trajectories for the inward shifted Large Helical Device configuration at modest 〈β〉 and with an anisotropic pressure profile due to the hot particles are evaluated and an estimate of the marginal stability is computed using the Weyl formula. The Weyl formula indicates that the finite diamagnetic drifts of the hot particles displaces the minimum phase space volume to lower frequencies; however, its magnitude is higher than when these drift effects are ignored.

Original language	English
Article number	014006
Journal	Plasma Physics and Controlled Fusion
Volume	54
Issue number	1
DOIs	https://doi.org/10.1088/0741-3335/54/1/014006
Publication status	Published - Jan 2012

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abstract = "An analysis of kinetic ballooning modes is presented, ray trajectories for the inward shifted Large Helical Device configuration at modest 〈β〉 and with an anisotropic pressure profile due to the hot particles are evaluated and an estimate of the marginal stability is computed using the Weyl formula. The Weyl formula indicates that the finite diamagnetic drifts of the hot particles displaces the minimum phase space volume to lower frequencies; however, its magnitude is higher than when these drift effects are ignored.",

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Diamagnetic drift stabilized ballooning modes in a 3D heliotron

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