Status of the JEF and EFF projects

Following positive experiences gained with the 1st version of JEF (Joint Evaluated File) library, which was distributed to NEA Data Bank member countries in 1985, a significantly improved version, JEF-2.0 (in ENDF-6 format), was distributed for testing end February 1990. It is planned to compile, middle 1991, following intensive benchmark testing, a version of JEF-2 library for general use. EFF (European Fusion File) and associated EAF (European Activation File) projects are sponsored by the European Community's Fusion Technology Programme. The programme of EFF is in its 2nd phase, after the successful completion of the EFF-1 data file. This phase has been defined 1989-1991 and the emphasis is on improvement of a shielding data base. The EFF-2 library will be ready end 1991 and contain new evaluations for most of the important fusion reactor materials. A follow-up programme, including benchmark testing has been defined. Creation of a joint JEF-EFF data file has been agreed It will be compiled during 1992. (author). 20 refs.; 2 figs.; 1 tab