29-31 October 2018
NEA Headquarters, Boulogne-Billancourt, France
Los Alamos National Laboratory’s NJOY Nuclear Data Processing Code System has been under continuous development since the 1970s.
It is used to process Evaluated Nuclear Data Files (ENDF) in the legacy 80-column card image format into application specific data files, with its most common use being the creation
of ACE (A Compact ENDF) files for use with the MCNP code.
The course will take place at NEA Headquarters in Boulogne-Billancourt (Paris) and has a cost of 550 EUR per participant, including lunches and coffee breaks.
Scope of the training
The class will include a detailed discussion of the ENDF system, focusing on the legacy card image format that is used worldwide, with brief mention of the forthcoming
Generalized Nuclear Data (GND) format. Following this we will provide an overview of NJOY’s capabilities, with specific focus on creating MCNP ACE files.
This will include continuous energy fast, or “c” files, thermal, or “t” files, and dosimetry, or “y” files. NJOY can also be utilized to plot cross sections,
angular distributions and secondary emission spectra. Class exercises will demonstrate these capabilities.
Outline of the class
*Computer exercises are intermingled throughout the lectures
- Introduction to ENDF and the ENDF format
- History of processing codes and NJOY
- How to obtain NJOY
- Overview of the NJOY code system
- NJOY and Data Visualization
- Creating continuous energy ACE (.c) files
- Continuation of .c ACE file creation
- Creating thermal scattering kernel ACE (.t) files
- Creating other ACE (dosimetry, photo-nuclear, photo-atomic) files
- Continuation of other ACE file creation
- Multigroup Processing with NJOY
- Covariance Processing with NJOY
- End of course
- Bring your own laptop
- The class participants need to have the NJOY source code and an f90 or later Fortran compiler (or an NJOY executable file) on their personal laptops.
- A simple text editor should also be available in order to create input files for the various class exercises and to view the output files.
(Class participants who are also licensed MCNP users and have access to that code on their personal laptops will be able to immediately use these new files.)