EASY-2005: European Activation System
EASY-2005 consists of a wide range of codes, data and documentation
all aimed at satisfying the objective of calculating the response
of materials irradiated in a neutron flux. This new version covers
a much larger energy range (0 - 60 MeV) than previous versions.
It is designed to investigate fusion devices which will act as intense
sources of high energy (14 MeV) neutrons and cause significant activation
of the surrounding materials. Another fusion related activity is
the planned materials testing in IFMIF. This is based on an accelerator
and will produce neutrons with energies upto 55 MeV. Activation
calculations on IFMIF can be carried out using EASY-2005.
The very general nature of the calculational method and the data
libraries used for EASY-2005 mean that it is applicable (with some
reservations) to all situations (e.g. fission reactors or neutron
sources) where materials are exposed to neutrons below 60 MeV. EASY
can be divided into two parts: library/code development tools and
user tools. The former are required to develop the latter, and EASY
users only need to be able to use the inventory code FISPACT and
be aware of the contents of the EAF library (the data source).
The generation of the European Activation File (EAF) is carried
out using the SAFEPAQ-II application; which uses as input many world-wide
sources of nuclear data. These evaluated files, calculations and
experimental data are used to construct a collection of cross section
data for neutron-induced reactions on an extensive set of target
nuclides (both stable and unstable), a set of decay data files and
other data libraries required by FISPACT.
EASY-2005 is available for personal computers running Windows (98,
NT4, 2000 and XP) and for UNIX workstations. It comprises the EAF-2005
nuclear data libraries, FISPACT-2005 and documentation (six UKAEA
reports). For Windows users there is an additional tool - the EASY-2005
User Interface that enables FISPACT to be run, output files to be
summarised, graphs plotted and the EAF data to be viewed.
A workshop dealing
with data for EASY was held in Prague recently. Click here for details.
For further details, including how to upgrade from EASY-2003, contact
handbook of activation data for all of the elements, including
data for particular neutron spectra, importance diagrams,
pathways and transmutation information is now available. The
handbook was calculated using EASY-2003 and provides activation
information without the need to run FISPACT. It may be downloaded
of Activation Data Calculated Using EASY-2003 (PDF
file, size 8.6Mb)
M.R. Gilbert and R.A. Forrest
UKAEA report UKAEA FUS 509 (July 2004).
Activation System: EASY-2005 Overview (PDF file, size
UKAEA report UKAEA FUS 513 (January 2005).
User manual (PDF file, size 974k)
R.A. Forrest and M.R. Gilbert
UKAEA report UKAEA FUS 514 (January 2005).
Activation File: EAF-2005 cross section library (PDF
file, size 1.3Mb)
R.A. Forrest, J. Kopecky and J-Ch.Sublet
UKAEA report UKAEA FUS 515 (January 2005).
Activation File: EAF-2005 decay data library (PDF file,
UKAEA report UKAEA FUS 516 (January 2005).
Activation File: EAF-2005 biological, clearance and transport
libraries (PDF file, size 206k)
UKAEA report UKAEA FUS 517 (January 2005).
User manual (PDF file, size 2.9Mb)
UKAEA report UKAEA FUS 454, Issue 6. (January
Validation of EASY-2005 using integral measurements (PDF file,
R. A. Forrest, J. Kopecky, M. Pillon, K. Seidel, S. P. Simakov, P. Bem, M. Honusek and E. Simeckova
UKAEA report UKAEA FUS 526 (January 2006).
The report on the validation of earlier versions of EAF,
are also available.
Validation of EASY-2005 above 20 MeV (PDF file,
R. A. Forrest and J. Kopecky
UKAEA report UKAEA FUS 529 (May 2006).
for the earlier versions EASY-99, EASY-2001 and EASY-2003 are
also available in our online
Technical Documents collection.