Coupled IMPGYRO-EDDY simulation of tungsten impurity transport in tokamak geometry

Coupled IMPGYRO-EDDY simulation of tungsten impurity transport in tokamak geometry
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托卡马克几何结构中钨杂质输运的 IMPGYRO-EDDY 耦合模拟

DOI:
10.1016/j.jnucmat.2009.01.169
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发表时间:
2009
影响因子:
3.1
通讯作者:
K. Ohya
K. Ohya
中科院分区:
工程技术2区
文献类型:
--
作者:
M. Toma;K. Hoshino;K. Inai;M. Furubayashi;A. Hatayama;K. Ohya

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我们正在开发针对高 Z 杂质的蒙特卡罗传输代码“IMPGYRO”。该代码包括高Z杂质的大部分重要过程:(1)现实托卡马克几何结构中的有限拉莫尔半径效应,(2)杂质离子与背景离子的库仑碰撞以及(3)多步电离/复合过程。在本研究中,IMPGYRO 代码与 EDDY 代码耦合以改进杂质生成模型。耦合代码已应用于典型分离状态下钨的分析并输出了初步结果。该代码更精确地考虑了重新发射(反射和自溅射)的影响。核心内的最终密度大约是之前简单杂质生成模型的两倍。这些初步结果表明,IMPGYRO-EDDY 代码的耦合不仅可以分析现实托卡马克几何结构中高 Z 杂质的大规模传输过程,还可以更准确地分析它们在材料表面的再发射过程。
We are developing a Monte Carlo transport code, ‘IMPGYRO’ for high-Z impurities. The code includes most of important process of high-Z impurities: (1) the finite Larmor radius effect in realistic tokamak geometries, (2) Coulomb collision of impurity ions with background ions and (3) multi-step ionization/recombination process. In this study, the IMPGYRO code is coupled to the EDDY code to improve the impurity generation model. The coupled code has been applied to the analysis of tungsten in a typical detachment state and has output the initial results. The code more precisely takes into account the effect of re-emission (reflection and self-sputtering). The resultant density inside the core becomes about two times larger than that with the previous simple impurity generation model. These initial results show that the coupling the IMPGYRO-EDDY code makes it possible to analyze not only the large-scale transport process of high-Z impurities in a realistic tokamak geometry, but also their re-emission process on the material surface more correctly.
现实托卡马克几何结构中多维杂质输运的建模
DOI: --
发表时间: 2007
期刊: Journal of Nuclear Material 363-365
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期刊: Journal of Nuclear Materials 390-391
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