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JOYO MK-II core characteristics database; Update to JENDL-3.2

Okawachi, Yasushi ; Maeda, Shigetaka   ; not registered ; not registered

The JOYO MK-II core characteristics database was compiled and published in 1998. Comments and requests from many users led to the creation of a revised edition. The revisions include changes to the MAGI calculation code system to use the 70 group JFS-3-J3.2 constant set processed from the JENDL-3.2 library. Total control rod worths, reactor kinetic parameters and the MK-II core performance test results were included per user's request. The core characteristics obtained from the 32$$^{nd}$$ to 35th operational cycles, which were conducted in the MK-III transition core, were newly added in this revised version. The MK-II core management data and core characteristics data were recorded on CD-ROM for user convenience. The structure of database is the same as the first edition. The "Configuration Data" include the core arrangement and refueling record for each operational cycle. The "Subassembly Library Data" include the atomic namber density, neutron fluence, burn-up, integral power of 362 driver fuel subassemblies and 69 irradiation test subassemblies. The "Output Data" contain the calculated neutron flux, gamma flux, power density, linear heat rate, coolant and fuel temperature distribution of all the fuel subassemblies at the beginning and end of each operational cycle. The "Core Characteristics Data" include the measured excess reactivities, control rod worth calibration curve, and reactivity coefficients of temperature, power and burn-up.

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