Abstract
RANKERN 16 is the latest version of the point-kernel gamma radiation transport Monte Carlo code from AMEC Foster Wheeler’s ANSWERS Software Service. RANKERN is well established in the UK shielding community for radiation shielding and dosimetry assessments. Many important developments have been made available to users in this latest release of RANKERN. The existing general 3D geometry capability has been extended to include import of CAD files in the IGES format providing efficient full CAD modelling capability without geometric approximation. Import of tetrahedral mesh and polygon surface formats has also been provided. An efficient voxel geometry type has been added suitable for representing CT data. There have been numerous input syntax enhancements and an extended actinide gamma source library. This paper describes some of the new features and compares the performance of the new geometry capabilities.
Highlights
RANKERN is a well-established and powerful pointkernel Monte Carlo software tool for general gamma-ray radiation transport analysis for shielding and dosimetry applications
The uncollided flux estimates produced by RANKERN are corrected for scattering using build-up factors; three build-up options are available
The second method is a set of build-up libraries based on ANS-6.4.3 [4] recommendations
Summary
RANKERN is a well-established and powerful pointkernel Monte Carlo software tool for general gamma-ray radiation transport analysis for shielding and dosimetry applications. The RANKERN package comprises the code itself and nuclear data libraries, user documentation, productivity tools and user support services. The second method is a set of build-up libraries based on ANS-6.4.3 [4] recommendations. These extend the number of materials and penetration distances from 20 to 40 mfp and are the current default in RANKERN. The third option uses Diffusion Theory to calculate build-up factors. This is useful for multi-layered shields without a dominant final shield material. RANKERN 16 is the latest version to be released in line with the ANSWERS vision to ‘provide easy-to-use software that meets the current and emerging needs of the user community’. All the images in this paper were generated using VisualWorkshop
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