The global impurity transport code (GITR — pronounced “guitar”) has been developed as a high-performance Monte Carlo particle (neutral atom and ion) tracking code to simulate the erosion, ionization, migration, and redistribution of plasma-facing components in magnetically confined fusion devices. The trace impurity assumption allows for a highly parallel computational model that enables increased scaling in the number of particles simulated as well as the domain size and geometric fidelity. Novel custom algorithms that query the 3D surface geometry has alleviated the need for traditional meshing needs. Presented here are the physics model, numerical schemes, algorithmic implementation, and example simulations.

Program summary

Program Title: GITR

CPC Library link to program files: https://doi.org/10.17632/djpw9rpv5b.1

Developer’s repository link: https://github.com/ORNL-Fusion/GITR

Licensing provisions: GPLv2

Programming language: C++

Nature of problem: Net and gross erosion, kinetic redistribution, and deposition of material sputtered as a result of high energy particle flux in the plasma–material interaction.

Solution method: Monte Carlo particle tracking through Lorentz force, background plasma collision operators, atomic physics processes, and interaction with material surfaces.

中文翻译：

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GITR：加速的全球尺度粒子跟踪代码，用于在与熔体有关的等离子-材料相互作用中腐蚀和重新分配壁材料

全局杂质传输代码（GITR-发音为“ guitar”）已开发为一种高性能的蒙特卡洛粒子（中性原子和离子）跟踪代码，可模拟电磁中的等离子体部件的腐蚀，电离，迁移和再分布密闭融合装置。痕量杂质假设允许使用高度并行的计算模型，该模型可以提高模拟粒子的数量以及域大小和几何保真度的缩放比例。查询3D表面几何形状的新颖自定义算法减轻了对传统网格划分需求的需求。这里介绍的是物理模型，数值方案，算法实现和示例仿真。

计划摘要

节目名称： GITR

CPC库链接到程序文件： https : //doi.org/10.17632/djpw9rpv5b.1

开发人员的资料库链接： https : //github.com/ORNL-Fusion/GITR

许可条款： GPLv2

编程语言： C ++

问题的性质：由于等离子-材料相互作用中高能粒子通量的作用，材料的净腐蚀和总腐蚀，动力学重新分布以及沉积的材料沉积。

解决方法：通过洛伦兹力，背景等离子体碰撞算子，原子物理过程以及与材料表面的相互作用跟踪蒙特卡洛粒子。