Tritium distribution in JT-60U W-shaped divertor

K. Masaki, K. Sugiyama, T. Tanabe, Y. Gotoh, K. Miyasaka, K. Tobita, Y. Miyo, A. Kaminaga, K. Kodama, T. Arai, N. Miya

Research output: Contribution to journalConference articlepeer-review

55 Citations (Scopus)

Abstract

Detailed tritium profiles on the JAERI Tokamak-60U (JT-60U) W-shaped divertor and the first wall tiles were examined by a tritium imaging plate technique (TIPT) and full combustion method. The highest tritium level (60 kBq/cm2) was observed at the dome top tiles. The tritium level of the divertor target was lower (2 kBq/cm2). The result of the triton deposition simulation using orbit following Monte-Carlo code was consistent with the tritium distribution obtained by TIPT and full combustion method. These results indicate that the tritium distribution of the JT-60U W-shaped divertor reflects mainly the distribution of the energetic triton impinging on the wall. According to the simulation, the tritium atoms produced by D-D nuclear reaction in JT-60U are not loosing completely their initial energy of 1 MeV and around 1/3 of them are implanted into the wall.

Original languageEnglish
Pages (from-to)514-518
Number of pages5
JournalJournal of Nuclear Materials
Volume313-316
Issue numberSUPPL.
DOIs
Publication statusPublished - 2003 Mar
Externally publishedYes
EventPlasma - Surface Interactions in Controlled Fusion Devices - Gifu, Japan
Duration: 2002 May 262002 May 31

Keywords

  • D-D nuclear reaction
  • High energy triton
  • Orbit following Monte-Carlo code
  • Ripple loss
  • Tritium
  • Tritium imaging plate technique

ASJC Scopus subject areas

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

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