Operational windows for dry-wall and wetted-wall IFE chambers

Farrokh Najmabadi, A. René Raffray, Said I. Abdel-Khalik, Leslie Bromberg, Laila A. El-Guebaly, Dan Goodin, Donald Arthur Haynes, Jeffery F. Latkowski, Wayne R. Meier, Rich Moore, Stephan Neff, Craig L. Olson, J. Perkins, Dave Petti, Ronald W. Petzoldt, David V. Rose, William M. Sharp, J. Phillip Sharpe, Mark S. Tillack, Laster WaganerDale R. Welch, Minami Yoda, Simon S. Yu, Mofreh Zaghloul

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


The ARIES-IFE study was an integrated study of inertial fusion energy (IFE) chambers and chamber interfaces with the driver and target systems. Detailed analysis of various subsystems was performed parametrically to uncover key physics/technology uncertainties and to identify constraints imposed by each subsystem. In this paper, these constraints (e.g., target injection and tracking, thermal response of the first wall, and driver propagation and focusing) were combined to understand the tradeoffs, to develop operational windows for chamber concepts, and to identify high-leverage research and development directions for IFE research. Some conclusions drawn in this paper are (a) the detailed characterization of the target yield and spectrum has a major impact on the chamber; (b) it is prudent to use a thin armor instead of a monolithic first wall for dry-wall concepts; (c) for dry-wall concepts with direct-drive targets, the most stringent constraint is imposed by target survival during the injection process; (d) for relatively low yield targets (<250 MJ), an operational window with no buffer gas may exist; (e) for dry-wall concepts with indirect-drive targets, a high buffer gas pressure would be necessary that may preclude propagation of the laser driver and require assisted pinch transport for the heavyion driver; and (f) generation and transport of aerosols in the chamber is the key feasibility issue for wetted-wall concepts.

Original languageEnglish
Pages (from-to)401-416+519
JournalFusion Science and Technology
Issue number3
Publication statusPublished - Nov 2004
Externally publishedYes


  • Fusion technology
  • IFE chambers
  • Inertial fusion

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • General Materials Science
  • Mechanical Engineering


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