Processing the ENDF/B-VII.1 Evaluated Nuclear Data Library

NJOY-99.368 was used to process all the materials in the ENDF/B-VII.1 neutron sublibrary (except Cl-35) within the framework of Phase 1 testing (data verification).
Cl-35 is the only evaluation that uses the Reich-Moore Limited resonance format which can only be processed with NJOY2010.
An ACE file for each of the 423 materials was successfully generated at 300K and subsequently used in basic data testing.
The ERRORR module was used to successfully process the covariance data in 190 materials and generate plots which were then posted on this Web site. For cross section covariances, only the plots of the most important reaction channels were included namely (n,total), (n,elastic), (n,inelastic), (n,2n), (n,fission), and (n,gamma).

Known issues:
- MF34 (angular distribution covariances) of the following materials could not be processed: Mn-55; W-180,-182,-183,-184,-186.
- MF31 (nubar covariances) of the following materials could not be processed: U-233,-234,-236; Np-237, Pu-241, Am-241, Am-242m1, Am-243.

MCNP5 version 1.40 was used to perform simple neutronics calculations on each material using a modified version of the criticality benchmark experiment HEU-MET-FAST-009 (sphere of highly-enriched uranium reflected by Be) described in the ICSBEP Handbook. A simple PASS/FAIL test was conducted: To determine if by replacing Be in the reflector with the material being tested would crash MCNP5.
All 423 materials were successfully processed at 50 million histories (10K neutrons, 5025 cycles, first 25 cycles discarded).