Handbook of Activation Data Calculated Using EASY-2007
Investigation of the properties of current fusion devices such as JET, planned ones such as ITER, and conceptual power plants such as PPCS, have indicated the need for tools to predict the activation of materials. Considerable effort within the European Fusion Programme has led to the production of the European Activation System (EASY) to provide such a capability. The current version, EASY-2007, consists of an extensive library of data (EAF-2007) including neutron-, proton and deuteron-induced cross sections; decay data and biological hazard coefficients; an inventory code (FISPACT-2007); a development tool (SAFEPAQ-II) used to produce the European Activation File (EAF); and extensive documentation. EASY-2007 is widely distributed and has been used to carry out activation calculations for a large number of materials. However, it was felt that there was also a need for a comprehensive handbook of activation data that could be referred to by materials specialists and designers without the need to run codes. The present report answers this need, and updates and extends the report [1] produced about five years ago with EASY-2003 and the two reports that were produced about eleven years ago [2,3]. Since then the activation field has matured with new versions of the EAF data and FISPACT code, which improve the accuracy of the predictions. The main extension to the data is the increase of the upper energy of the energy range from 20 to 60 MeV. The ‘importance diagrams’ that allow a neutron-spectrum-independent summary of the activation properties of a material to be given, have also been extended to this higher energy. Using these new tools the activation properties of all the naturally occurring elements from Hydrogen to Bismuth are presented.