Search Results - "Kitada, Takanori"

Generalized formulation of extended cross-section adjustment method based on minimum variance unbiased linear estimation by Yokoyama, Kenji, Kitada, Takanori

“…By introducing a new assumption of linear estimation, we derive a new formulation of the extended cross-section adjustment (EA) method, which minimizes the…”
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Fundamental design activity of fast reactor with inherent safety characteristics for effective transmutation of minor actinide by OKITA, Takafumi, TAKEDA, Satoshi, HOASHI, Eiji, KITADA, Takanori

“…In order to reduce Minor Actinides (MA), the transmutation of MA in a fast reactor has been studied in Japan. In the transmutation in the fast reactor, MAs are…”
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Discussion on variety of cross-section candidate obtained by cross-section adjustment method by Odani, Sohei, Takeda, Satoshi, Kitada, Takanori

“…The cross-section adjustment method gives only one best-estimated cross-section set based on Bayesian theory. In this study, cross-section sets other than the…”
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Development of an improved quasi-static transient analysis code based on three-dimensional Sn nodal transport theory for fast reactor by Takeda, Satoshi, Takeda, Toshikazu, Fuchita, Sho, Kitada, Takanori

“…•A transient analysis code based on transport theory was developed.•A new treatment was derived for the source term.•A transient calculation was performed for…”
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An estimation of cross-section covariance data suitable for predicting neutronics parameters uncertainty by Takeda, Toshikazu, Takeda, Satoshi, Koike, Hiroki, Kitada, Takanori, Sato, Daisuke

“…•New cross section covariance data available for uncertainty analysis is discussed.•Two methods are used to estimate the new covariance data.•It was found that…”
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Feasibility Study on the Initial Kartini Reactor Core Using Plate Type Fuel Elements by Wicaksono, Argo Satrio, Takeda, Satoshi, Kitada, Takanori

“…The plate type fuel element conversion is proposed to solve a supply problem of TRIGA standard rod type fresh fuel in the long term and to extend the lifetime…”
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Fade-out time shortening on radiotoxicity and decay heat using TRU generation reduction fuel by HIRAIWA, Kouji, KIMURA, Rei, WADA, Satoshi, SUGITA, Tsukasa, YOSHIOKA, Kenichi, TAKEDA, Satoshi, KITADA, Takanori

“…We analyzed the possibility of TRU generation reduction fuel using HALEU as the initial enrichment to reduce the radiotoxicity and decay heat of TRU when using…”
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Development of efficient Krylov preconditioning techniques for multi-dimensional method of characteristics by Takeda, Satoshi, Kitada, Takanori

“…Two techniques are proposed in the preconditioning for the Krylov sub-space method called the Generalized Minimal RESidual (GMRES) method to accelerate inner…”
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Impact of Thorium Capture Cross Section Uncertainty on the Thorium Utilized ADS Reactivity Calculation by Vu, Thanh Mai, Kitada, Takanori

“…Recently, the researches on fast neutron spectrum system utilized thorium fuel are widely conducted. However, the recent thorium cross section libraries are…”
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Transmutation Strategy Using Thorium-Reprocessed Fuel ADS for Future Reactors in Vietnam by Vu, Thanh Mai, Kitada, Takanori

“…Nuclear power is believed to be a key to the energy security for a developing country like Vietnam where the power demanding increases rapidly every year…”
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Study on the Impact of Thermal Agitation on Doppler Coefficient in Epithermal Range for Gd-Bearing Fuel by Ono, Michitaka, Wada, Kazuhiro, Ino, Satoshi, Takeda, Satoshi, Kitada, Takanori

“…The impact of thermal agitation on Doppler coefficient for Gd-bearing fuel was analyzed. It was found through the analysis that the impact increases when a…”
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Importance measure evaluation based on sensitivity coefficient for probabilistic risk assessment by Takeda, Satoshi, Kitada, Takanori

“…•FV, RRW, RAW, and BI are evaluated by using the sensitivity coefficient.•The sensitivity coefficient is estimated from the part of Monte Carlo simulation…”
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Simple method based on sensitivity coefficient for stochastic uncertainty analysis in probabilistic risk assessment by Takeda, Satoshi, Kitada, Takanori

“…•A simple method based on the sensitivity coefficient was developed for the uncertainty analysis.•The method can treat the covariance of the parameters…”
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Feasibility study on burnable absorber for FORSETI to reduce productions of Pu238 and Pu241 by Takeda, Satoshi, Kitada, Takanori

“…To reduce the radiotoxicity of transuranium nuclides, Fuel cycle Of light water Reactor with Surplus Enriched Uranium for Transuranium-production Inhibition…”
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Effective Convergence of Fission Source Distribution in Monte Carlo Simulation by KITADA, Takanori, TAKEDA, Toshikazu

“…The effective technique to accelerate the convergence of a fission source distribution in a Monte Carlo simulation is proposed as an application of a fission…”
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Cross-section adjustment method based on Bayesian theory for specific cross-section set by Takeda, Satoshi, Shibano, Ryosuke, Kitada, Takanori

“…A cross-section adjustment method based on Bayesian theory was derived for adjusting the specific cross-section set. The present method gives the 'a…”
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Bayesian estimation for covariance between cross-section and errors of experiment and calculation by Takeda, Satoshi, Sugihara, Hideyuki, Kitada, Takanori

“…•The adjustment method is derived for XS and errors of experiment and calculation.•The uncertainty is reduced by the adjustment of covariances between these…”
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Dimension-reduced cross-section adjustment method based on minimum variance unbiased estimation by Yokoyama, Kenji, Yamamoto, Akio, Kitada, Takanori

“…A new formulation of the cross-section adjustment methodology with the dimensionality-reduction technique has been derived in the light of the fact that it is…”
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Study on the relation between Doppler reactivity coefficient and resonance integrals of Thorium and Uranium in PWR fuels by Dobuchi, Noboru, Takeda, Satoshi, Kitada, Takanori

“…•We used sensitivity coefficient to decompose Doppler reactivity coefficient.•Relative change of capture cross-section of Th-232 is larger than that of…”
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Fundamental design activity of fast reactor with inherent safety characteristics for effective transmutation of minor actinide by OKITA, Takafumi, TAKEDA, Satoshi, HOASHI, Eiji, KITADA, Takanori

“…In order to reduce Minor Actinides (MA), the transmutation of MA in a fast reactor has been studied in Japan. In the transmutation in the fast reactor, MAs are…”
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