Abstract A new single scattering adjoint transport capability was implemented in Framework for REsearch in Nuclear ScIence and Engineering (FRENSIE). The Evaluated Electron Data Library (EEDL) was used to generate new tabulated adjoint data. All adjoint data were generated using refined EEDL data and a unit-base grid policy. Verification and validation tests were performed for the adjoint electron transport in FRENSIE. Adjoint simulation results were compared with forward simulation results for a self-adjoint infinite medium problem as well as experimental results for electron low-energy backscattering coefficients. Only a refined unit-base grid policy and coupled elastic scattering were tested for adjoint tests. The adjoint transport capability shows good agreement with the forward transport capability. The adjoint atomic excitation physics were unable to model a discrete forward source. For the self-adjoint infinite medium problems, the adjoint results matched the forward results to within 2% except near the cutoff energy. For backscattering coefficients, the adjoint results matched the forward results to within 5% for all converged bins. Overall, the adjoint transport capability was in good agreement with the forward transport capability validating the adjoint transport scheme.

中文翻译：

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FRENSIE 中的单散射伴随蒙特卡罗电子输运

摘要 在核科学与工程研究框架 (FRENSIE) 中实现了一种新的单散射伴随传输能力。评估电子数据库 (EEDL) 用于生成新的表格伴随数据。所有伴随数据都是使用精炼的 EEDL 数据和基于单位的网格策略生成的。对 FRENSIE 中的伴随电子传输进行了验证和验证测试。将伴随模拟结果与自伴随无限介质问题的前向模拟结果以及电子低能背散射系数的实验结果进行比较。对于伴随测试，仅测试了改进的基于单位的网格策略和耦合弹性散射。伴随运输能力与前向运输能力显示出良好的一致性。伴随原子激发物理学无法模拟离散前向源。对于自伴无限介质问题，除接近截止能量外，伴随结果与前向结果的匹配度在 2% 以内。对于后向散射系数，伴随结果与前向结果匹配，所有收敛的 bin 均在 5% 以内。总体而言，伴随运输能力与验证伴随运输计划的前向运输能力非常一致。