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Report No.
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DT neutron irradiation experiment for evaluation of tritium recovery from WCCB blanket

Ochiai, Kentaro; Kawamura, Yoshinori; Hoshino, Tsuyoshi; Edao, Yuki; Takakura, Kosuke; Ota, Masayuki; Sato, Satoshi; Konno, Chikara

We have performed the tritium recovery experiment on fusion reactor blanket with DT neutrons at the Fusion Neutronics Source facility in Japan Atomic Energy Agency. The candidate breeding material, Li$$_{2}$$TiO$$_{3}$$ pebble, was put into the container which was set up it into an assembly simulating water cooled ceramic breeding (WCCB) blanket. Helium sweep gas including H$$_{2}$$ (1%) and/or H$$_{2}$$O (1%) was flowed and extracted tritium was collected to water bubblers during DT neutron irradiation. The Li$$_{2}$$TiO$$_{3}$$ pebble was also heated up to a constant temperature at 573, 873 and 1073 K, respectively. We arranged the tritium recovery system to measure tritiated water moisture and tritium gas, separately, and to investigate the amount of recovered tritium and the chemical form. From our experiments, it was showed that the amount of recovered tritium was corresponded to the calculation value and the ratio of chemical form depended to the temperature and kinds of sweep gas.

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Category:Nuclear Science & Technology

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