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Report No.

250 kW LBE spallation target for J-PARC Transmutation Experimental Facility

Sasa, Toshinobu; Saito, Shigeru; Obayashi, Hironari; Wan, T.; Sugawara, Takanori  ; Kita, Satoshi*; Yamaki, Kenichi*; Yoshimoto, Hidemitsu*

JAEA proposes the Partitioning and Transmutation Technology to reduce the environmental impact caused from high-level radioactive waste using Accelerator-driven system (ADS) which adopts lead-bismuth eutectic alloy (LBE) as a coolant for subcritical core and spallation target. To realize ADS, JAEA plans to construct the Transmutation Experimental Facility (TEF) within the framework of J-PARC project. By using TEF in J-PARC, it is planned to solve technical issues for safe application of LBE by completing the data to design LBE-cooled ADS. The 250kW LBE spallation target will be located in TEF facility to prepare material irradiation database by both proton and neutron injection in the temperature range for typical LBE-cooled ADS. Detailed design and optimization of the target as a reference target of TEF-T and various elemental technologies are investigated. The large scale LBE loops for mock up the spallation target and material corrosion studies are also manufactured and ready for various experiments. The latest status of 250kW LBE spallation target design works will be described in the presentation.



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