1,721,004 research outputs found
VITJEFF31.BOLIB - A JEFF-3.1 Multi-Group Coupled (199 n + 42γ) Cross Section Library in AMPX Format for Nuclear Fission Applications
No full textThe ENEA-Bologna Nuclear Data Group produced the VITJEFF31.BOLIB multi-group coupled (199 n + 42 y) cross section library in AMPX format, based on the JEFF-3.l OECD/NEA Data Bank nuclear data library. The generation of VITJEFF31.BOLIB for nuclear fission applications was conceived as an European counterpart of the ENDF/B-VI Release 3 VITAMlN-B6 American library. The present library has the same group structure and generaI features as VITAMIN-B6 and was produced using similar data processing methodologies, based on the NJOY-99.160 system with an ENEA-Bologna modified version of the GROUPR module and the ENEA-Bologoa 2007 Revision of the SCAMPI system. VITJEFF3l.BOLIB is a pseudo-problem-independent library based on the Bondarenko (f-factor) method far the treatment of neutron resonance self-shielding and temperature effects. The library contains 176 nuclides processed at 4 temperatures (300 °K, 600 °K, 1000 °K and 2100 °K), obtained far the most part with 6 to 8 values far the background cross section. Thermal scattering cross sections were processed at all the temperatures available in the JEFF-3.1 thermal scattering law data file far 6 additional bound nuclides (H-1 in light water, H-1 in polyethylene, H-1 in zirconium hydride, H-2 in heavy water, C in graphite and Be in beryllium metal). From VITJEFF31.BOLIB it is possible to generate, through the ENEA-Bologna 2007 Revision of SCAMPI, collapsed working libraries of self-shielded cross sections in AMPX or FIDO-ANISN format
ENEA-Bologna Multi-Group Cross Section Libraries for LWR Shielding and Pressure Vessel Dosimetry Applications
Full text linkThe ENEA-Bologna Nuclear Data Group produced two multi-group cross section libraries for nuclear fission applications, named VITJEFF311.BOLIB and BUGJEFF311.BOLIB. VITJEFF311.BOLIB is a fine-group coupled neutron/photon general-purpose library in AMPX format, based on the JEFF-3.1.1 evaluated nuclear data library and the Bondarenko (f-factor) neutron resonance self-shielding method. VITJEFF311.BOLIB was generated through the NJOY -99.259 nuclear data processing system in the neutron and photon energy group structures (199 n + 42γ ) of the VITAMIN-B6 similar library produced at ORNL. BUGJEFF311.BOLIB is a broad-group coupled neutron/photon working cross section library in FIDO-ANISN format, specifically dedicated to LWR shielding and pressure vessel dosimetry applications. It was generated in the same neutron and photon energy group structures (47 n + 20 γ) as the ORNL BUGLE-96 similar library, through problern-dependent cross section collapsing of the VITJEFF311.BOLIB library, performed with the updated and corrected ENEA-Bologna 2007 Revision of the ORNL SCAMPI nuclear data processing system. BUGJEFF311.BOLIB was tested on the PCA-Replica 12/13 and VENUS-3 engineering neutron shielding benchmark experiments (included in the SINBAD database), specifically conceived to check the nuclear data and the transport codes used in LWR radiation shielding and radiation damage analyses, through three-dimensional fixed source transport calculations with the TORT-3.2 discrete ordinates (SN) code. BUGJEFF311.BOLIB was recently transferred to OECD-NEA Data Bank and is freely distributed with the designation NEA-1866/01 ZZ-BUGJEFF311.BOLIB
AUTOMATIC GENERATION OF 3D FINE MESH GEOMETRIES FOR THE ANALYSIS OF TRE VENUS-3 SHIELDING BENCHMARK EXPERIMENT WITH THE TORT CODE. Paper presented at:International Conference on
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MATJEF22.BOLIB - A JEF-2.2 MULTIGROUP COUPLED (199 n + 42 gamma) CROSS SECTION LIBRARY IN MATXS FORMAT FOR NUCLEAR FISSION APPLICATIONS
No full textThe ENEA-Bologna Nuclear Data Group produced the MATJEF22.BOLIB multigroup coupled (199 n + 42 gamma) cross section library in MATXS format, based on the JEF-2.2 European nuclear data file. MATJEF22.BOLIB was produced, using the MATXSR module of the NJOY-94.66 data processing system, from the same GENDF cross section data files used to produce the ENEA-Bologna VITJEF22.BOLIB multigroup library in AMPX format for nuclear fission applications. These ENEA-Bologna libraries can be considered as European counterparts of the VITAMIN-B6 American library, based on the ENDF/B-VI Release 3 nuclear data file. MATJEF22.BOLIB is a pseudo-problem-independent library based on the Bondarenko (f-factor) method for the treatment of neutron resonance self-shielding and temperature effects. The library contains 133 nuclides processed at 4 temperatures (300 °K, 600 °K, 1000 °K and 2100 °K), obtained for the most part with 6 to 8 values for the background cross section. Thermal scattering cross sections were processed at all temperatures available in the JEF-2.2 thermal scattering law data file for 5 additional bound nuclides (H-l in light water, H-l in polyethylene, H-2 in heavy water, C in graphite and Be in beryllium metal). Collapsed working libraries of self-shielded cross sections in the formats used by the deterministic codes of the DANTSYS or DOORS systems can be generated from MATJEF22.BOLIB, through further data processing with the TRANSX code
Status of the JEFF Nuclear Data Library
No full textThe status of the Joint Evaluated Fission and Fusion file (JEFF) is described. Recently. the .JEFF- 3.1 1. nuclear data library was released, and shortly after adopted by the French nuclear power industry for inclusion in their production and analysis codes. Recent updates include actinide evaluations. materials evaluations that have emerged from various European nuclear data projects, the activation library, the decay data and fission yield sub-libraries, and fusion-related data files from the European F4E. project. The revisions were motivated by the availability of new measurements, modeling capabilities and trends from integral experiments. Validations have been performed, mainly for criticality, reactivity temperature coefficients, fuel inventory, decay heat and shielding of thermal and fast systems. The next release of the library, JEFF-3.2. will be discussed. This will contain among others a significant increase of covariance data evaluations, modem evaluations for various structural materials, a larger emphasis on minor actinides and addition of high-quality gamma production data for many fission products
Data Processing and Validation Needs of Group-Wise Working Cross Section Libraries for Nuclear Fission Reactor Shielding and Radiation Damage Applications
No full textThe generation of broad-group working cross section libraries for nuclear fission reactor shielding and radiation damage applications in different spectral environments (LWR, SFR, LFR, HTR, etc.) is recommended in order to permit the use, in particular, of the three-dimensional (3D) deterministic transport codes in the data validation activities. 3D deterministic transport analyses could be performed, in parallel with similar 3D Monte Carlo analyses, on single-material and engineering neutron shielding benchmark experiments, included in the SINBAD (ORNL/RSICC - OECD/NEA Data Bank) international database. This action, mainly performed by the national research institutes, would be very useful not only for the reactor physicist and nuclear engineer data validation interests but also for the nuclear safety authorities and the industrial organizations
ENEA-BOLOGNA NUCLEAR DATA CENTRE - A Summary of the Main Objectives Achieved in the Period 1997-2001
No full textThe present report wants to be exclusively a simple schematic list of the main objectives (evaluated nuclear data, processed nuclear cross section libraries, transport simulation for data validation purpose, calculational programs, basic nuclear physics studies and conference organizations) achieved by the ENEA-BOLOGNA Nuclear Data Centre in the period 1997-2001. Detailed descriptions of the activities can be found in the references reported
ENEA-BOLOGNA PRODUCTION AND TESTING OF JEF-2.2 MULTI-GROUP CROSS SECTION LIBRARIES FOR NUCLEAR FISSION APPLICATIONS
No full textThe ENEA-Bologna Nuclear Data Group produced the VITJEF22.BOLIB (NEA-1699/01 ZZ VITJEF22.BOLIB) and MATJEF22.BOLIB (NEA-1740/0 I ZZ MATJEF22.BOLIB) fine-group coupled neutron and photon (199 n + 42 y) cross section libraries far nuclear fission applications, respectively in AMPX and MATXS format and based on the JEF-2.2 European nuclear data file. Both the libraries were produced from the same set of cross section files in GENDF format, generated with the NJOY-94.66 nucIear data processing system. The present libraries can be considered as European counterparts of the VITAMIN-B6 (DLC-0184 ZZ VITAMIN-B6) American library in AMPX format, based on the ENDF/B-VI Release 3 American nuclear data file. In fact they have the same general features and the same neutron and photon energy group structures as VITAMIN-B6. In particular, all these libraries are pseudo-problem-independent and based on the Bondarenko (f-factor) method far the treatment of neutron resonance self-shielding and temperature effects. Each ENEA-Bologna library contains a set of 133 nuclide cross section files processed at 4 temperatures (300 °K, 600 °K, 1000 °K and 2100 °K) and obtained far the most part with 6 to 8 values of the background cross section 0'0' Thermal scattering cross sections were processed at all the temperatures available in the JEF-2.2 thermal scattering law data file far 5 additional bound nuclides: H-I in light water, H-l in polyethylene, H-2 in heavy water, C in graphite and Be in beryllium meta!. Collapsed working libraries of self-shielded cross sections in the formats used by the deterministic transport codes of the DANTSYS and DOORS systems can be generated from VITJEF22.BOLIB and MATJEF22.BOLIB through, respectively, further problem-dependent data processing with the AMPX or SCAMPI nuclear data processing systems and with the TRANSX code. This work was performed in co-operation with specialists ofIPPE-Obninsk and with the constant scientific support of OECD/NEA Data Bank
VITJEF22.BOLIB - A JEF-2.2 MULTIGROUP COUPLED (199 n + 42 gamma) CROSS SECTION LIBRARY IN AMPX FORMAT FOR NUCLEAR FISSION APPLICATIONS
No full textThe ENEA-Bologna Nuc1ear Data Centre produced the VITJEF22.BOLIB multigroup coupled (199 n + 42 gamma) cross section library in AMPX format, based on the JEF-2.2 European nuclear data file. The generation of the VITJEF22.BOLIB library for nuclear fission applications was conceived as an European counterpart of the VITAMIN-B6 American library, based on the ENDF/B-VI Release 3 nuc1ear data file. The present library has the same group structure and general features as VITAMIN-B6 and was produced using the same data processing methodologies, based on the NJOY-94.66 and SCAMPI data processing systems. VITJEF22.BOLIB is a pseudo-problem-independent library based on the Bondarenko (f-factor) method for the treatment of neutral resonance self-shielding and temperature effects. The library contains 133 nuclides processed at 4 temperatures (300 °K, 600 °K, 1000 °K and 2100 °K), obtained for the most part with 6 to 8 values for the background cross section. Thermal scattering cross sections were processed at all temperatures available in the JEF-2.2 thermal scattering law data file for 5 additional bound nuc1ides (H-1 in light water, H-1 in polyethylene, H-2 in heavy water, C in graphite and Be in beryllium metal). From VITJEF22.BOLIB it is possible to generate, through further proper data processing with the AMPX or SCAMPI systems, collapsed working libraries of self-shielded cross sections in AMPX or FIDO format. VITJEF22.BOLIB was extensively tested on many thermal and fast criticality benchmark experiments
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