Preliminary consideration on maintenance approach for a fast ignition ICF reactor with a dry wall chamber and a high repetition laser

Ryoji Hiwatari, Yoshiyuki Asaoka, Kunihiko Okano, Seiji Mori, Hirokazu Yamada, Takuya Goto, Yuichi Ogawa

Research output: Contribution to journalArticle

5 Citations (Scopus)


The fast ignition method enables a reduction of the laser power required to achieve a large energy gain. This suggests consideration of a new inertial confinement fusion power plant concept, which has a small fusion pulse and a high repetition laser with a dry wall chamber. To establish the potential of the fast ignition method and to make clear the critical issues, a Fast Ignition ICF reactor concept with a Dry Wall chamber and a High Repetition Laser (FI-DWHRL concept) was previously proposed. The maintenance approach for this Fast Ignition ICF reactor concept is preliminary considered and its critical issues are described in this paper. The large cask and the large maintenance port for replacing the blanket sectors are applied to this Fast Ignition ICF reactor concept. The first wall and blanket system is divided into 20 sectors and all beam lines go between blanket sectors. The vacuum vessel is located outside the blanket system and this vacuum vessel also serves as the tritium boundary. To replace the final optical device, 6 access corridors are placed along the reactor room. Finally, critical issues on this maintenance approach are listed.

Original languageEnglish
Pages (from-to)911-915
Number of pages5
JournalFusion Science and Technology
Issue number4
Publication statusPublished - 2007 Nov


ASJC Scopus subject areas

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

Cite this