NEA Data Bank Nuclear Data Services: Activities/Projects

The Joint Evaluated Fission and Fusion (JEFF) Library is a collaborative project between the countries participating in the NEA Data Bank. The JEF-3.1 library is the latest version and it was released in May 2005. It contains sets of evaluated nuclear data, both for fusion and fission applications; it contains a number of different data types, including neutron and proton interaction data, radioactive decay data, fission yield data, thermal scattering law data and photo-atomic interaction data.
More information on the JEFF & EFF Projects.

Nuclear Science and the Data Service Activities

Introduction

The role of Nuclear Science is in maintaining, advancing and disseminating the common core of scientific knowledge needed by the different players involved in nuclear technology utilisation and development.
More information on Nuclear Science projects.

Among the activities carried out under the mandate of Nuclear Science, a number are related to nuclear data, including the co-ordination of the major evaluated nuclear data efforts in the world, to improve the accuracy of the data for the benefit of safety margins and economics (The Working Party on International Evaluation Co-operation). Similarly, a co-ordination of experimental activities takes place to ensure efficient use of the limited experimental resources for neutron data measurements (Working Party on International Nuclear Data Measurement Activities).

Working Party on International Evaluation Co-operation (WPEC)

The OECD NEA Nuclear Science Committee's Working Party on International Evaluation Co-operation was established in 1991 to facilitate co-operation between evaluation projects and to initiate and progress studies on specific evaluation topics. These studies are carried out by subgroups of the Working Party.
More information on the WPEC.

High Priority Nuclear Data Request List

One of the subgroups of WPEC is responsible for drawing up the High Priority Nuclear Data Request List. This list is designed to provide guidance to those managing the measurement and evaluation programmes on the requirements for improved nuclear data for applications, primarily (but not exclusively) in nuclear power technology. Because of the limited resources available a careful consideration of the important requirements is helpful. This involves proposals being formulated initially by the users of nuclear data followed by a detailed examination by the representatives of the measurement laboratories and evaluation projects. These comment on the status of the data and the feasibility of making improved measurements or evaluations to the requested accuracy. The alternative of meeting requirements using nuclear theory is also considered.
More information on the HPRL.

Sammy Users' Group

The code users and developer with an electronic discussion forum on different aspects related to the code's utilisation and evolution.
The code developer with additional feedback and with ideas of possible extensions desired by the code users.
The code users with easy and centralised access through the internet to recent and foreseen evolutions of the code (Frequently Asked Questions, Patches to the last released version, a list of features currently under development).
Announcements of upcoming events of relevance to code users and developer.

Data files associated with computer programs

In addition to the basic nuclear data compiled and disseminated by the activities of the NEA Data Bank Nuclear Data Services, processed nuclear data (normally associated with a specific computer code) are disseminated via Computer Program Services.

For details of data files offered through Computer Program Services, please refer to the list of available processed libraries.