Neutronics study on accelerator driven subcritical systems with thorium-based fuel for comparison between solid and molten-salt fuels

Shunsuke Ishimoto, Kenji Ishibashi, Hideki Tenzou, Toshinobu Sasa

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Since thorium is an abundant fertile material, there is hope for the thorium-cycle fuels for an accelerator driven subcritical system (ADS). The ADS utilizes neutrons, which are generated by high-energy protons of giga-electron-volt-grade, but cross sections for the interaction of high-energy particles are not available for use in current ADS engineering design. In this paper the neutron behavior in the ADS target based on the related experimental data is clarified, and the feasibility of the ADS regarding both the molten salts (Flibe: 7LiF-BeF2-ThF4-233 UF4, chloride: NaCl-ThCl4-233 UCl4) and oxide ([Th, 233U]O2) fuels is examined. The difference between the experiment and the calculated result at the ADS high-energy region is discussed. In a comparison of the fuels, the time evolution of keff and the beam current in the burning period are calculated. The calculated results suggest that the ADS with solid fuel has better future prospects than that with molten-salt fuels. The ADS with Flibe molten-salt fuel tends to require a high beam current and consequently needs the installation of a metallic spallation target and the continuous removal for fission products and protactinium. In comparison with the Flibe fuel, the ADS with chloride fuel has a flux distribution that is similar to a solid fuel reactor.

Original languageEnglish
Pages (from-to)300-312
Number of pages13
JournalNuclear Technology
Volume138
Issue number3
DOIs
Publication statusPublished - Jan 1 2002

Fingerprint

Thorium
molten salts
thorium
Particle accelerators
Molten materials
accelerators
Salts
beam currents
Protactinium
Neutrons
protactinium
chlorides
neutrons
fission products
Fission products
nuclear fuels
spallation
proton energy
Systems engineering
particle energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Neutronics study on accelerator driven subcritical systems with thorium-based fuel for comparison between solid and molten-salt fuels. / Ishimoto, Shunsuke; Ishibashi, Kenji; Tenzou, Hideki; Sasa, Toshinobu.

In: Nuclear Technology, Vol. 138, No. 3, 01.01.2002, p. 300-312.

Research output: Contribution to journalArticle

Ishimoto, Shunsuke ; Ishibashi, Kenji ; Tenzou, Hideki ; Sasa, Toshinobu. / Neutronics study on accelerator driven subcritical systems with thorium-based fuel for comparison between solid and molten-salt fuels. In: Nuclear Technology. 2002 ; Vol. 138, No. 3. pp. 300-312.
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