Feasibility of uranium spallation target in accelerator-driven system

Kairat Ismailov, Masaki Saito, Hiroshi Sagara, Kenji Nishihara

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A feasibility study on natural uranium spallation target in accelerator-driven system (ADS) for minor actinide (MA) transmutation was performed. As a result of comparative study of uranium and lead-bismuth (PbBi) targets in the bare case without blanket surrounding, it was found that uranium target had better neutron generation performance, but limited by the geometrical size due to high neutron absorption in 238U. In ADS for MA transmutation, uranium used as target instead of PbBi also absorbs neutrons passing the target area. More realistic concept of pin type uranium spallation target cooled by liquid PbBi was considered aiming at enhancing spallation target performance in terms of neutron generation efficiency and operation temperature. The uranium pin target design had nothing better effects on neutron balance of such system than a conventional PbBi target in ADS and it was concluded that uranium target was not suitable for the full-scale ADS.

Original languageEnglish
Pages (from-to)925-929
Number of pages5
JournalProgress in Nuclear Energy
Issue number7
Publication statusPublished - Sept 1 2011
Externally publishedYes


  • Accelerator-driven system
  • Neutron
  • PbBi
  • Spallation target
  • Uranium

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Safety, Risk, Reliability and Quality
  • Energy Engineering and Power Technology
  • Waste Management and Disposal


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