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首页> 外文期刊>Plasma Science & Technology >Investigation of Divertor Detachment in EAST by 'Two-Point' Model
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Investigation of Divertor Detachment in EAST by 'Two-Point' Model

机译：用“两点”模型研究EAST中的分流器分离

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Divertor plasma detachment offers one of the most promising operating modes for fusion devices because of low target power loading. In this article a 'two-point' model is used to investigate the formation of detachment and explore the route to detachment in EAST, in order to find an ideal operation window. The simulation results show that impurity radiation and ionneutral friction are the main causes of divertor plasma detachment at the target plates. Raising the safety factor and reducing the upstream power density provide effective means to achieve the detachment due to the increased radiation power fraction. Puffing Ar and Ne impurities and raising the safety factor can bring the upstream high plasma temperature region (above 100 eV) and the low target plasma temperature region (below 10 eV) close to each other in terms of the separatrix density. But it is difficult to find a common operating region which satisfies both conditions. High recycling and detached regimes provides an ideal operation window because of the steady upstream condition and low target power load.
机译：由于目标功率负载低，分流器等离子体分离为融合设备提供了最有前途的工作模式之一。在本文中，使用“两点”模型调查脱离的形成并探索EAST中脱离的路径，以便找到理想的操作窗口。仿真结果表明，杂质辐射和离子中性摩擦是靶板上偏滤器等离子体脱离的主要原因。由于增加的辐射功率分数，提高安全系数并降低上游功率密度提供了实现分离的有效手段。吹入Ar和Ne杂质并提高安全系数可以使上游的较高等离子体温度区域（高于100 eV）和较低的目标等离子体温度区域（低于10 eV）在分离密度方面彼此接近。但是，很难找到一个同时满足这两个条件的工作区域。由于稳定的上游条件和较低的目标功率负载，高回收率和分离状态提供了理想的操作窗口。

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