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Tsuchiya, Kunihiko; Ito, Masayasu; Kitagishi, Shigeru; Endo, Yasuichi; Saito, Takashi; Hanawa, Yoshio; Dorn, C. K.*
JAEA-Conf 2012-002, p.111 - 114, 2012/12
no abstracts in English
Onishi, Takashi; Koyama, Shinichi
JAEA-Conf 2012-002, p.115 - 119, 2012/12
Concepts of effective use and recycling of minor actinide (MA) in fast reactor were proposed. Evaluation of MA transmutation behavior plays important roles for this purpose. Therefore, Am and U samples with high purity were irradiated in an experimental fast reactor Joyo. Transmutation behavior of Am and U samples were evaluated experimentally by chemical analysis. Transmutation ratios of 
Am were calculated. Their dependence on neutron flux and neutron energy was evaluated. 
Pu production per neutron fluence from 
U in the reflector region was larger than that in the fuel stack region.
Shibata, Akira; Kimura, Nobuaki; Tanimoto, Masataka; Nakamura, Jinichi; Saito, Takashi; Tsuchiya, Kunihiko
JAEA-Conf 2012-002, p.56 - 60, 2012/12
To improve the quality of irradiation tests data and to increase the reliability of safety management system of reactors including both MTR and LWR, development of new instrumentation is key issue. JAEA is developing several in-pile instrumentations to conduct irradiation tests at JMTR. Here we introduce three new instrumentations. These are ECP sensor, new water level indicator and in-reactor observation system using Cherenkov light.
