典型文献
Implementation and application of PyNE sub-voxel R2S for shutdown dose rate analysis
文献摘要：
PyNE R2S is a mesh-based R2S implementation with the capability of performing shutdown dose rate(SDR)analysis directly on CAD geometry with Cartesian or tetrahedral meshes.It supports advanced variance reduction for fusion energy systems.However,the assumption of homogenized materials of PyNE R2S with a Cartesian mesh throughout a mesh voxel introduces an approximation in the case where a voxel covers multiple non-void cells.This work implements a sub-voxel method to add fidelity to PyNE R2S with a Cartesian mesh during the process of activation and photon source sampling by performing independent inventory calculations for each cell within a mesh voxel and using the results of those independent calculations to sample the photon source more precisely.PyNE sub-voxel R2S has been verified with the Frascati Neutron Generator(FNG)-ITER and ITER computational shutdown dose rate benchmark problems.The results for sub-voxel R2S show satisfactory agreement with the experimental values or reference results.PyNE sub-voxel R2S has been applied to the shutdown dose rate calculation of the Chinese Fusion Engineering Testing Reactor(CFETR).In conclusion,sub-voxel R2S is a reliable tool for SDR calculation and obtains more accurate results with the same voxel size than voxel R2S.
文献关键词：
中图分类号：
作者姓名：
Xiaokang ZHANG;Patrick C SHRIWISE;Songlin LIU;Paul P H WILSON
作者机构：
Institute of Plasma Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,People's Republic of China;Argonne National Laboratory,9700 S.Cass Ave.,IL 60439,United States of America;University of Wisconsin-Madison,1500 Engineering Dr,Madison,WI 53706,United States of America
文献出处：
引用格式：
[1]Xiaokang ZHANG;Patrick C SHRIWISE;Songlin LIU;Paul P H WILSON-.Implementation and application of PyNE sub-voxel R2S for shutdown dose rate analysis)[J].等离子体科学和技术（英文版）,2022(09):145-151
A类：
PyNE,R2S,FNG
B类：
Implementation,application,sub,voxel,shutdown,dose,analysis,implementation,capability,performing,SDR,directly,CAD,geometry,Cartesian,tetrahedral,meshes,It,supports,advanced,variance,reduction,fusion,energy,systems,However,assumption,homogenized,materials,throughout,introduces,approximation,case,where,covers,multiple,void,cells,This,work,implements,method,add,fidelity,during,process,activation,photon,source,sampling,by,independent,inventory,calculations,each,within,using,results,those,sample,more,precisely,has,been,verified,Frascati,Neutron,Generator,ITER,computational,benchmark,problems,show,satisfactory,agreement,experimental,values,reference,applied,Chinese,Fusion,Engineering,Testing,Reactor,CFETR,In,conclusion,reliable,tool,obtains,accurate,same,size,than
AB值：
0.457485
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