Preparation of a covariance processing system for the evaluated nuclear data file, JENDL, 3

In the Japanese Nuclear Data Committee, Japan Atomic Energy Research Institute, the evaluation work of covariance data for the Japanese evaluated nuclear data file JENDL is now in progress. Preparation of a covariance processing code system for JENDL is necessary for using its evaluated covariance data. Therefore, a covariance processing code ERRORJ was improved for processes of resonance parameters, average cosine of elastic scattering, and fission energy spectrum. Two types of utility programs were produced to treat multigroup covariance file with the COVERX format. 14 nuclides (10B, 11B, 16O, 23Na, Cr, 55Mn, Fe, Ni, 233U, 235U, 238U, 239Pu, 240Pu, 241Pu) including the evaluated covariance data for JENDL-3.2 were processed by the ERRORJ code and produced the JENDL-3.2 multigroup covariance file with the COVERX format. (author)