Burning Analysis on the Improved Confinement Mode

Gonta Tateishi, Masatoshi Yagi, Sanac I. Itoh

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

1-D transport code is used to examine the ignition of plasma on the improved confinement mode and impact of profile effect on the burning performance. Energy transport, He-ash particle transport and poloidal magnetic field transport equations are solved with a thermal diffusivity of current diffusive ballooning mode model. The ratio of a thermal diffusivity and a He-ash diffusivity is introduced as a parameter and assumed to be constant. For a fixed current profile, the existence of the ignited state is shown. An internal transport barrier is formed autonomously even if parameters lie in the L-mode boundary condition. It is found that the sensitivity of the ignition condition on the density is strong and there is no margin of ignition for the density limit when density profile is flat. However, if a peaked profile of density is chosen, solutions which satisfy the density limit exist. The long time sustainment of ignition is also shown, solving poloidal magnetic field transport simultaneously. It is shown that the ignition is sustained within the time scale of burn-time, however, MHD stability should be considered in the time scale of current diffusion.

本文言語英語
ページ(範囲)3277-3285
ページ数9
ジャーナルjournal of the physical society of japan
68
10
DOI
出版ステータス出版済み - 10 1999

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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