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Title: FREYA-a new Monte Carlo code for improved modeling of fission chains

FREYA-a new Monte Carlo code for improved modeling of fission chains A new simulation capability for modeling of individual fission events and chains and the transport of fission products in materials is presented. FREYA ( Fission Yield Event Yield Algorithm ) is a Monte Carlo code for generating fission events providing correlated kinematic information for prompt neutrons, gammas, and fragments. As a standalone code, FREYA calculates quantities such as multiplicity-energy, angular, and gamma-neutron energy sharing correlations. To study materials with multiplication, shielding effects, and detectors, we have integrated FREYA into the general purpose Monte Carlo code MCNP. This new tool will allow more accurate modeling of detector responses including correlations and the development of SNM detectors with increased sensitivity.
Authors: ; ;
Publication Date:
OSTI Identifier:1046121
Report Number(s):LLNL-PROC-561431
TRN: US1203925
DOE Contract Number:W-7405-ENG-48
Resource Type:Conference
Resource Relation:Conference: Presented at: SORMA-West 2012, Oakland, CA, United States, May 14 - May 17, 2012
Research Org:Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Org:USDOE
Country of Publication:United States
Language:English
Subject: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALGORITHMS; CHAIN REACTIONS; FISSION; FISSION PRODUCTS; FISSION YIELD; MONTE CARLO METHOD; PROMPT NEUTRONS; SIMULATION