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Report No.
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Module preparation for "MAGI Code System Renewal (III)

not registered; Yamaoka, Mitsuaki*

"MAGI" system renewal has been continued for improving the prediction accuracy for neutronic and thermal characteristics along with the core-upgrading to the MK-III core. Preparation of several modules was finished before the present work for neutron diffusion calculation of nomal/adjoint flux, gamma-source, and power distribution, as well as burnup calculation. The modules to calculate the gamma flux distribution based on diffusion theory and reactor kinetics parameters such as effective delayed neutron fraction and prompt neutron life time were made. Test calculation for each module was carried out to confirm the validity of calculation results. As for future works, it is required to make several modules for the evaluation of thermal characteristics, and preparation of effective cross section, in addition to the I/O interfaces and system control modules, for the further renewals of "MAGI" system.

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