TOUCANS: A versatile Monte Carlo neutron transport code based on GEANT4
TOUCANS: A versatile Monte Carlo neutron transport code based on GEANT4
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TOUCANS：基于 GEANT4 的多功能蒙特卡罗中子输运代码
DOI：
10.1016/j.nima.2023.168190
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Eric Dumonteil
中科院分区：
文献类型：
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作者：
L. Thulliez;B. Mom;Eric Dumonteil
本文报道了TOUCANS的开发，这是一个新的蒙特卡罗中子输运代码，完全使用GEANT4工具包编写。它旨在通过一个简单的键值输入文件，轻松快速地对复杂系统进行建模。虽然它的主要重点是利用评估的截面库传输低于20 mev的低能中子，但它也利用了GEANT4提供的最先进的能力，可以模拟所有能量下的所有粒子的截面。因此，它为非专业人士提供了涉及不同粒子的各种各样的应用，例如模拟基于紧凑型加速器的中子源（CANS），这最初推动了它的发展。它利用在GEANT4中执行的最新实现来提供屏蔽计算能力（使用自适应多级分裂，这是一种完全自动化的方差减少技术）和临界计算能力（估计乘法系统的k eff）。它还受益于与CADMesh的紧密耦合，可以轻松导入CAD模型，与NCrystal一起将热中子输运的支持扩展到晶体，与FIFRELIN一起增加复合核的去激发精度，与FUNZ一起为用户提供参数化仿真功能（如多目标算法和Pareto集的计算）。由于最近在GEANT4 neutron - hp包内对中子物理进行了改进，在中子物理精度方面，TOUCANS代码可以被认为与tripolii -4®或MCNP等工业中子传输代码相提并论。它的源代码应该很快在GEANT4高级示例中发布。
This paper reports the development of TOUCANS, a new Monte Carlo neutron transport code fully written using the GEANT4 toolkit. It aims at modeling complex systems easily and rapidly, thanks to a simple key–value input file. While its main focus is the transport of low energy neutrons–below 20 MeV–using evaluated cross-section libraries, it also takes advantage of the state-of-the-art capabilities offered by GEANT4 regarding the modeled cross-sections for practically all particles at all energies. Hence it gives access to non-specialists to a wide variety of applications involving different particles, such as the simulation of compact accelerator based neutron sources (CANS) which initially motivated its development. It leverages on recent implementations performed within GEANT4 to provide both shielding calculation capabilities (using Adaptive Multilevel Splitting, which is a full y automated variance reduction technique) and criticality calculation capabilities (to estimate the k eff of a multiplicative system). It also benefits from a tight coupling with CADMesh to readily import CAD models, with NCrystal to extend the support of thermal neutron transport to crystals, with FIFRELIN to increase compound nucleus de-excitation accuracy, and with FUNZ to provide to the user parametric simulation capabilities (such as multi-objective algorithms and calculation of Pareto sets). Thanks to recent improvements of the neutron physics within the GEANT4 Neutron-HP package, the TOUCANS code can be considered on-par with industrial neutron transport codes such as Tripoli-4® or MCNP in term of neutron physics accuracy. Its sources should be released soon amongst GEANT4 advanced examples.