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Report No.

Elemental technologies for lead-bismuth spallation target system in J-PARC

Obayashi, Hironari; Yamaguchi, Kazushi; Saito, Shigeru; Sugawara, Takanori  ; Takei, Hayanori ; Sasa, Toshinobu

To promote JAEA's R&D for ADS, construction of the Transmutation Experimental Facility (TEF) is planned under the framework of the J-PARC project as a preceding step before the construction of demonstrative ADS. Main purposes of TEF are experimental investigation of feasibility of beam window and structural materials, and operation properties of the target system by using 400MeV-250kW proton beam. The target system of TEF must be operated without significant troubles during its operation period. Furthermore, since the target system is highly radioactive by the proton beam irradiation, all components should be maintained by remote handling devices. In this study, elemental technologies to realize the target system, such as the monitoring system of flow rate by using the ultrasonic method, the heater system with the metallic heat insulator joined to a flow channel of LBE, and the operability of remote handing, were tested.



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