The influence of the radial particle transport on the divertor plasma detachment

K. Hoshino, K. Shimizu, T. Takizuka, N. Asakura, T. Nakano

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Abstract Divertor plasma detachment is the most promising candidate to reduce the divertor heat load in fusion reactors. Present understanding of detachment physics is not sufficient to adequately reproduce experimental observations. Understanding and control of detachment physics is indispensable to design the divertor in future machines. To improve the quality of divertor modeling and reveal limitations of the detachment physics built into state-of-the-art codes, an integrated divertor code SONIC has been applied to modeling of the JT-60U detached divertor plasma. In this study, the radial diffusion coefficient in the private region or the far SOL region is increased to investigate the influence of radial plasma transport on detachment characteristics. Saturation of the reduction in ion flux after roll-over is improved by the radial transport enhancement, while the radial profile at the mid-plane agreed with the experimental data.

Original languageEnglish
Article number48729
Pages (from-to)573-576
Number of pages4
JournalJournal of Nuclear Materials
Volume463
DOIs
Publication statusPublished - 2015 Jul 22
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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