Numerical study of precession of circulating particles in tokamaks

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Researchers

Research units

  • Ukrainian Acad Sci, National Academy of Sciences Ukraine, Inst Nucl Res

Abstract

The toroidal precession of circulating particles in tokamaks is studied numerically. The dependence of the precession frequency on the magnetic shear, the elongation of the plasma cross-section, and plasma pressure is investigated. It is concluded that the analytical expressions for the precession frequency by Kolesnichenko et al. (2003 Phys. Plasmas 10, 1449-1457) represent a reasonable approximation for the limit cases of tokamaks with circular cross-section and shearless tokamaks with elliptical cross-section. The precession frequency was calculated for non-circular tokamaks with magnetic shear. Based on the numerical results, an interpolation formula for the precession frequency is proposed.

Details

Original languageEnglish
Pages (from-to)559-569
Number of pages11
JournalJournal of Plasma Physics
Volume77
Issue number4
Publication statusPublished - Aug 2011
MoE publication typeA1 Journal article-refereed

    Research areas

  • OSCILLATIONS, IONS

ID: 6899639