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Report No.

Development of nuclear data processing system FRENDY, 4; Implementation of the ACE file generator

Tada, Kenichi; Nagaya, Yasunobu; Kunieda, Satoshi

JAEA has been developing the nuclear data processing system FRENDY (FRom Evaluated Nuclear Data librarY to any application). The first goal of the development of FRENDY is generation function of the nuclear data library for the continuous energy Monte Carlo calculation code. To generate the nuclear data library, four procedures, i.e., (1) Generation of point wise cross section, (2) generation of the probability table, (3) processing the thermal scattering law data, and (4) generation of the nuclear data library, are required. In this presentation, generation of the ACE file which is the nuclear data library for the continuous energy Monte Carlo code is described. To verify FRENDY, the K$$_{rm eff}$$ values which is using the ACE file which is processed by FRENDY are compared with that by NJOY99. The difference of the K$$_{rm eff}$$ values are less than 0.05%. This result indicates that FRENDY appropriately generate the ACE file.



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