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首页> 外文期刊>Annals of nuclear energy >G4-STORK: A Geant4-based Monte Carlo reactor kinetics simulation code
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G4-STORK: A Geant4-based Monte Carlo reactor kinetics simulation code

机译：G4-STORK：基于Geant4的蒙特卡洛反应堆动力学仿真代码

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摘要

In this paper we introduce G4-STORK (Geant4 STOchastic Reactor Kinetics), a new, time-dependent, Monte Carlo particle tracking code for reactor physics applications. G4-STORK was built by adapting and expanding on the Geant4 Monte Carlo toolkit. The toolkit provides the fundamental physics models and particle tracking algorithms that track each particle in space and time. It is a framework for further development (e.g. for projects such as G4-STORK). G4-STORK derives reactor physics parameters (e.g. k_(eff)) from the continuous evolution of a population of neutrons in space and time in the given simulation geometry. In this paper we detail the major additions to the Geant4 toolkit that were necessary to create G4-STORK. These include a renormalization process that maintains a manageable number of neutrons in the simulation even in very sub- or supercritical systems, scoring processes (e.g. recording fission locations, total neutrons produced and lost, etc.) that allow G4-STORK to calculate the reactor physics parameters, and dynamic simulation geometries that can change over the course of simulation to illicit reactor kinetics responses (e.g. fuel temperature reactivity feedback). The additions are verified through simple simulations and code-to-code comparisons with established reactor physics codes such as DRAGON and MCNP. Additionally, G4-STORK was developed to run a single simulation in parallel over many processors using MPI (Message Passing Interface) pipes.
机译：在本文中，我们介绍了G4-STORK（Geant4 STO随机反应堆动力学），这是一种新的，时间相关的蒙特卡洛粒子跟踪代码，适用于反应堆物理应用。 G4-STORK是通过适应和扩展Geant4 Monte Carlo工具包而构建的。该工具包提供了基本的物理模型和粒子跟踪算法，可以跟踪时空中的每个粒子。这是进一步开发的框架（例如用于G4-STORK等项目）。 G4-STORK根据给定的模拟几何形状从中子群在空间和时间上的连续演化得出反应堆物理参数（例如k_（eff））。在本文中，我们详细介绍了创建G4-STORK所需的Geant4工具包的主要新增功能。这些包括重新规范化过程，即使在非常次临界或超临界系统中，也可以在模拟中保持可管理数量的中子；对过程进行评分（例如记录裂变位置，产生和损失的中子总数等），从而使G4-STORK能够计算反应堆物理参数和动态模拟几何结构，这些参数可能会在模拟过程中改变为非法反应堆动力学响应（例如，燃料温度反应性反馈）。通过简单的模拟和与已建立的反应堆物理代码（例如DRAGON和MCNP）的代码间代码比较，对添加物进行了验证。此外，G4-STORK的开发目的是使用MPI（消息传递接口）管道在多个处理器上并行运行单个仿真。

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