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首页> 外文期刊>Plasma physics and controlled fusion >Development of integrated SOL/divertor code and simulation study of the JT-60U/JT-60SA tokamaks
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Development of integrated SOL/divertor code and simulation study of the JT-60U/JT-60SA tokamaks

机译：集成SOL / divertor代码的开发以及JT-60U / JT-60SA托卡马克的仿真研究

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摘要

To predict the heat and particle controllability in the divertor of tokamak reactors and to optimize the divertor design, comprehensive simulations by integrated modeling allowing for various physical processes are indispensable. SOL/divertor codes have been developed in the Japan Atomic Energy Agency for the interpretation and the prediction of behaviour of SOL/divertor plasmas, neutrals and impurities. The code system consists of the two-dimensional fluid code SOLDOR, the neutral Monte-Carlo (MC) code NEUT2D and the impurity MC code IMPMC. Their integration code 'SONIC' is almost completed and examined to simulate self-consistently the SOL/divertor plasmas in JT-60U. In order to establish the physics modelling used in fluid simulations, the particle simulation code PARASOL has also been developed. Simulation studies using those codes have progressed with the analysis of JT-60U experiments and the divertor designing of JT-60SA (modification program of JT-60U). The X-point multifaceted asymmetric radiation from the edge in the JT-60U experiment is simulated. It is found that the deep penetration of chemically sputtered carbon at the dome causes the large radiation peaking near the X-point. The pumping capability of JT-60SA is evaluated through the simulation. A guideline to enhance the pumping efficiency is obtained in terms of the exhaust slot width and the strike point distance. Transient behaviour of SOL/divertor plasmas after an ELM crash is characterized by the PARASOL simulation; the fast-time-scale heat transport is affected by collisions while the slow-time-scale behaviour is affected by the recycling.
机译：为了预测托卡马克反应堆分流器中的热量和颗粒可控性并优化分流器设计，通过集成建模实现各种物理过程的全面模拟是必不可少的。日本原子能机构已经开发出SOL /分流器代码，用于解释和预测SOL /分流器等离子体，中性和杂质的行为。该代码系统由二维流体代码SOLDOR，中性蒙特卡洛（MC）代码NEUT2D和杂质MC代码IMPMC组成。他们的集成代码'SONIC'即将完成，并经过检查以能够自洽地模拟JT-60U中的SOL /分集器等离子体。为了建立用于流体模拟的物理模型，还开发了粒子模拟代码PARASOL。随着JT-60U实验分析和JT-60SA转向器设计（JT-60U的修改程序）的使用，使用这些代码进行的仿真研究已经取得了进展。在JT-60U实验中模拟了来自边缘的X点多面不对称辐射。已经发现，化学溅射碳在圆顶处的深入渗透会导致在X点附近出现较大的辐射峰。通过仿真评估了JT-60SA的泵送能力。根据排气槽宽度和行程点距离获得了提高抽气效率的指导原则。 ELM碰撞后SOL /分流器等离子体的瞬态行为由PARASOL仿真表征。快速时标的传热受到碰撞的影响，而慢时标的行为则受到再循环的影响。

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